Toyota CH-R Service Manual: Open in Front Speed Sensor RH (C1330-C1467)

DESCRIPTION

Each speed sensor detects wheel speed and sends signals to the skid control ECU (brake actuator assembly). These signals are used by the ABS.

HINT:

The output voltage values shown below are for when the vehicle wire harnesses are connected to the skid control ECU (brake actuator assembly) and the speed sensors.

*A

for Front

*B

for Rear

*1

Speed Sensor

*2

Speed Sensor Rotor

*a

Waveform (Reference): Between Speed Sensor (-) and Body Ground

*b

Low speed

*c

High speed

-

-

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1330

Open in Front Speed Sensor RH

An open or short in the speed sensor signal circuit.

  • Front speed sensor RH
  • Speed sensor circuit
  • Sensor installation

C1331

Open in Front Speed Sensor LH

An open or short in the speed sensor signal circuit.

  • Front speed sensor LH
  • Speed sensor circuit
  • Sensor installation

C1332

Open in Rear Speed Sensor RH

An open or short in the speed sensor signal circuit.

  • Rear speed sensor RH (rear axle hub and bearing assembly RH)
  • Speed sensor circuit
  • Sensor installation

C1333

Open in Rear Speed Sensor LH

An open or short in the speed sensor signal circuit.

  • Rear speed sensor LH (rear axle hub and bearing assembly RH)
  • Speed sensor circuit
  • Sensor installation

C1464

Front Speed Sensor RH

Any of the following is detected:

  • The vehicle speed is more than 50.4 km/h (31 mph) and pulses are not input for 0.08 seconds.
  • After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph), a wheel speed of 0 km/h (0 mph) is detected.
  • After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph), a front wheel speed of 0 km/h (0 mph) is detected.
  • The following conditions are met for 9 to 72 seconds or more (varies depending on the driving conditions):
    • The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
    • The vehicle speed is less than 100 km/h (62 mph) and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6 km/h (4 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)
    • The vehicle speed is 100 km/h (62 mph) or more and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
  • Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.
  • An abnormal signal is received from a wheel speed sensor.
  • Front speed sensor RH
  • Speed sensor circuit
  • Front speed sensor rotor RH (front axle hub sub-assembly RH)
  • Sensor installation
  • Skid control ECU (brake actuator assembly)

C1465

Front Speed Sensor LH

Any of the following is detected:

  • The vehicle speed is more than 50.4 km/h (31 mph) and pulses are not input for 0.08 seconds.
  • After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph), a wheel speed of 0 km/h (0 mph) is detected.
  • After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph), a front wheel speed of 0 km/h (0 mph) is detected.
  • The following conditions are met for 9 to 72 seconds or more (varies depending on the driving conditions):
    • The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
    • The vehicle speed is less than 100 km/h (62 mph) and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6 km/h (4 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)
    • The vehicle speed is 100 km/h (62 mph) or more and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
  • Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.
  • An abnormal signal is received from a wheel speed sensor.
  • Front speed sensor LH
  • Speed sensor circuit
  • Front speed sensor rotor LH (front axle hub sub-assembly LH)
  • Sensor installation
  • Skid control ECU (brake actuator assembly)

C1466

Rear Speed Sensor RH

Any of the following is detected:

  • The vehicle speed is more than 43.2 km/h (27 mph) and pulses are not input for 0.08 seconds.
  • After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph), a wheel speed of 0 km/h (0 mph) is detected.
  • After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph), a rear wheel speed of 0 km/h (0 mph) is detected.
  • The following conditions are met for 9 to 72 seconds or more (varies depending on the driving conditions):
    • The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
    • The vehicle speed is less than 100 km/h (62 mph) and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6 km/h (4 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)
    • The vehicle speed is 100 km/h (62 mph) or more and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
  • Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.
  • An abnormal signal is received from a wheel speed sensor.
  • Rear speed sensor RH (rear axle hub and bearing assembly RH)
  • Speed sensor circuit
  • Rear speed sensor rotor RH (rear axle hub and bearing assembly RH)
  • Sensor installation
  • Skid control ECU (brake actuator assembly)

C1467

Rear Speed Sensor LH

Any of the following is detected:

  • The vehicle speed is more than 43.2 km/h (27 mph) and pulses are not input for 0.08 seconds.
  • After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph), a wheel speed of 0 km/h (0 mph) is detected.
  • After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph), a rear wheel speed of 0 km/h (0 mph) is detected.
  • The following conditions are met for 9 to 72 seconds or more (varies depending on the driving conditions):
    • The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
    • The vehicle speed is less than 100 km/h (62 mph) and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6 km/h (4 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)
    • The vehicle speed is 100 km/h (62 mph) or more and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)
  • Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.
  • An abnormal signal is received from a wheel speed sensor.
  • Rear speed sensor LH (rear axle hub and bearing assembly RH)
  • Speed sensor circuit
  • Rear speed sensor rotor LH (rear axle hub and bearing assembly LH)
  • Sensor installation
  • Skid control ECU (brake actuator assembly)
DTC Detection Conditions: C1464
 

Vehicle Condition

Pattern 1

Pattern 2

Pattern 3

Pattern 4

Diagnosis Condition

-

-

-

-

-

Malfunction Status

The vehicle speed is more than 50.4 km/h (31 mph) and pulses are not input.

-

-

-

After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph), a wheel speed of 0 km/h (0 mph) is detected.

-

-

-

After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph), a rear wheel speed of 0 km/h (0 mph) is detected.

-

-

-

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

-

-

Detection Time

0.08 seconds

-

-

9 to 72 seconds or more (varies depending on the driving conditions)

Number of Trips

1 trip

1 trip

1 trip

1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: C1464
 

Vehicle Condition

Pattern 5

Pattern 6

Pattern 7

Pattern 8

Diagnosis Condition

-

-

-

-

-

Malfunction Status

The vehicle speed is less than 100 km/h (62 mph) and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6 km/h (4 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)

-

-

-

The vehicle speed is 100 km/h (62 mph) or more and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

-

-

Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.

-

-

-

An abnormal signal is received from a wheel speed sensor.

-

-

-

Detection Time

9 to 72 seconds or more (varies depending on the driving conditions)

9 to 72 seconds or more (varies depending on the driving conditions)

-

-

Number of Trips

1 trip

1 trip

1 trip

1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: C1465
 

Vehicle Condition

Pattern 1

Pattern 2

Pattern 3

Pattern 4

Diagnosis Condition

-

-

-

-

-

Malfunction Status

The vehicle speed is more than 50.4 km/h (31 mph) and pulses are not input.

-

-

-

After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph), a wheel speed of 0 km/h (0 mph) is detected.

-

-

-

After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph), a rear wheel speed of 0 km/h (0 mph) is detected.

-

-

-

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

-

-

Detection Time

0.08 seconds

-

-

9 to 72 seconds or more (varies depending on the driving conditions)

Number of Trips

1 trip

1 trip

1 trip

1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: C1465
 

Vehicle Condition

Pattern 5

Pattern 6

Pattern 7

Pattern 8

Diagnosis Condition

-

-

-

-

-

Malfunction Status

The vehicle speed is less than 100 km/h (62 mph) and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6 km/h (4 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)

-

-

-

The vehicle speed is 100 km/h (62 mph) or more and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

-

-

Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.

-

-

-

An abnormal signal is received from a wheel speed sensor.

-

-

-

Detection Time

9 to 72 seconds or more (varies depending on the driving conditions)

9 to 72 seconds or more (varies depending on the driving conditions)

-

-

Number of Trips

1 trip

1 trip

1 trip

1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: C1466
 

Vehicle Condition

Pattern 1

Pattern 2

Pattern 3

Pattern 4

Diagnosis Condition

-

-

-

-

-

Malfunction Status

The vehicle speed is more than 43.2 km/h (27 mph) and pulses are not input.

-

-

-

After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph), a wheel speed of 0 km/h (0 mph) is detected.

-

-

-

After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph), a rear wheel speed of 0 km/h (0 mph) is detected.

-

-

-

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

-

-

Detection Time

0.08 seconds

-

-

9 to 72 seconds or more (varies depending on the driving conditions)

Number of Trips

1 trip

1 trip

1 trip

1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: C1466
 

Vehicle Condition

Pattern 5

Pattern 6

Pattern 7

Pattern 8

Diagnosis Condition

-

-

-

-

-

Malfunction Status

The vehicle speed is less than 100 km/h (62 mph) and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6 km/h (4 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)

-

-

-

The vehicle speed is 100 km/h (62 mph) or more and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

-

-

Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.

-

-

-

An abnormal signal is received from a wheel speed sensor.

-

-

-

Detection Time

9 to 72 seconds or more (varies depending on the driving conditions)

9 to 72 seconds or more (varies depending on the driving conditions)

-

-

Number of Trips

1 trip

1 trip

1 trip

1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: C1467
 

Vehicle Condition

Pattern 1

Pattern 2

Pattern 3

Pattern 4

Diagnosis Condition

-

-

-

-

-

Malfunction Status

The vehicle speed is more than 43.2 km/h (27 mph) and pulses are not input.

-

-

-

After the initial start or restart and when the vehicle speed has reached 12 km/h (7 mph), a wheel speed of 0 km/h (0 mph) is detected.

-

-

-

After the initial start or restart and when the vehicle speed has reached 20 km/h (12 mph), a rear wheel speed of 0 km/h (0 mph) is detected.

-

-

-

The difference between the speed of the fastest wheel and the speed of the slowest wheel is 5% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

-

-

Detection Time

0.08 seconds

-

-

9 to 72 seconds or more (varies depending on the driving conditions)

Number of Trips

1 trip

1 trip

1 trip

1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: C1467
 

Vehicle Condition

Pattern 5

Pattern 6

Pattern 7

Pattern 8

Diagnosis Condition

-

-

-

-

-

Malfunction Status

The vehicle speed is less than 100 km/h (62 mph) and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6 km/h (4 mph) or more. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 16 km/h (10 mph) is allowable.)

-

-

-

The vehicle speed is 100 km/h (62 mph) or more and the difference between the speed of the fastest wheel and the speed of the slowest wheel is 6% or more of vehicle speed. (If the speed of any wheel is less than 5 km/h (3 mph), a speed difference of up to 15% is allowable.)

-

-

-

Wheel speed sensor signal fluctuation is equivalent to 98 G or more, or alternates between 50 G or more and -50 G or less.

-

-

-

An abnormal signal is received from a wheel speed sensor.

-

-

-

Detection Time

9 to 72 seconds or more (varies depending on the driving conditions)

9 to 72 seconds or more (varies depending on the driving conditions)

-

-

Number of Trips

1 trip

1 trip

1 trip

1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When replacing the skid control ECU (brake actuator assembly), perform system variant learning.

Click here

PROCEDURE

1.

RECONFIRM DTC

(a) Check if the same DTC is output.

Click here

Chassis > ABS/VSC/TRAC/EPB > Trouble Codes

Result

Proceed to

DTCs C1330 and/or C1464 are output.

A

DTCs C1331 and/or C1465 are output.

B

DTCs C1332 and/or C1466 are output.

C

DTCs C1333 and/or C1467 are output.

D

B

GO TO STEP 9

C

GO TO STEP 16

D

GO TO STEP 23

A

2.

CHECK FRONT SPEED SENSOR RH INSTALLATION

(a) Turn the ignition switch off.

*1

Front Speed Sensor RH

*a

Correct

*b

Incorrect

*c

8.5 N*m

*d

No clearance

(b) Check the speed sensor installation.

OK:

There is no clearance between the sensor and the front steering knuckle RH.

The installation bolt is tightened properly.

Torque

8.5 N*m (87 kgf*cm, 75 in.*lbf)

NG

REINSTALL OR REPLACE FRONT SPEED SENSOR RH

OK

3.

CHECK FRONT SPEED SENSOR RH (CHECK FOR FOREIGN MATTER)

(a) Remove the front speed sensor RH.

Click here

(b) Check the speed sensor tip.

OK:

The sensor tip is free of scratches, oil, and foreign matter.

NOTICE:

  • If there is oil or foreign matter on the speed sensor, clean the speed sensor.
  • If the speed sensor is damaged, replace the speed sensor with a new one.
  • Check the speed sensor signal after cleaning or replacement.

    Click here

NG

CLEAN OR REPLACE FRONT SPEED SENSOR RH

OK

4.

INSPECT BRAKE ACTUATOR ASSEMBLY (POWER SOURCE CIRCUIT)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to Front Speed Sensor RH)

(b) Disconnect the A25 front speed sensor RH connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Turn the ignition switch to ON.

(e) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A25-1 (FR+) - Body ground

Ignition switch ON

11 to 14 V

NG

GO TO STEP 7

OK

5.

INSPECT BRAKE ACTUATOR ASSEMBLY (GROUND CIRCUIT)

(a) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A25-1 (FR+) - A25-2 (FR-)

Ignition switch ON

11 to 14 V

*a

Front view of wire harness connector

(to Front Speed Sensor RH)

NG

GO TO STEP 8

OK

6.

CHECK FRONT SPEED SENSOR ROTOR (FRONT AXLE HUB ASSEMBLY RH) (CHECK FOR FOREIGN MATTER)

(a) Remove the front speed sensor rotor (front axle hub assembly RH).

Click here

(b) Check the speed sensor rotor.

OK:

The rotor is free of scratches, oil, and foreign matter.

NOTICE:

  • If there is oil or foreign matter on the speed sensor rotor, clean the speed sensor rotor.
  • If the speed sensor rotor is damaged, replace the speed sensor rotor with a new one.
  • Check the speed sensor signal after cleaning or replacement.

    Click here

HINT:

  • The front speed sensor rotor is incorporated into the front axle hub assembly.
  • If the front speed sensor rotor needs to be replaced, replace it together with the front axle hub assembly.

Result

Proceed to

OK

A

NG (The speed sensor rotor is damaged.)

B

NG (There is foreign matter on the speed sensor rotor.)

C

A

REPLACE FRONT SPEED SENSOR RH

B

REPLACE FRONT AXLE HUB SUB-ASSEMBLY RH

C

CLEAN FRONT SPEED SENSOR ROTOR (FRONT AXLE HUB ASSEMBLY RH)

7.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - FRONT SPEED SENSOR RH)

(a) Turn the ignition switch off.

(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

(c) Disconnect the A42 skid control ECU (brake actuator assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A42-26 (FR-) - A25-2 (FR-)

Always

Below 1 Ω

A42-26 (FR-) or A25-2 (FR-) - Body ground

Always

10 kΩ or higher

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - FRONT SPEED SENSOR RH)

(a) Turn the ignition switch off.

(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

(c) Disconnect the A42 skid control ECU (brake actuator assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A42-26 (FR-) - A25-2 (FR-)

Always

Below 1 Ω

A42-26 (FR-) or A25-2 (FR-) - Body ground

Always

10 kΩ or higher

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.

CHECK FRONT SPEED SENSOR LH INSTALLATION

(a) Turn the ignition switch off.

*1

Front Speed Sensor LH

*a

Correct

*b

Incorrect

*c

8.5 N*m

*d

No clearance

(b) Check the speed sensor installation.

OK:

There is no clearance between the sensor and the front steering knuckle LH.

The installation bolt is tightened properly.

Torque

8.5 N*m (87 kgf*cm, 75 in.*lbf)

NG

REINSTALL OR REPLACE FRONT SPEED SENSOR LH

OK

10.

CHECK FRONT SPEED SENSOR LH (CHECK FOR FOREIGN MATTER)

(a) Remove the front speed sensor LH.

Click here

(b) Check the speed sensor tip.

OK:

The sensor tip is free of scratches, oil, and foreign matter.

NOTICE:

  • If there is oil or foreign matter on the speed sensor, clean the speed sensor.
  • If the speed sensor is damaged, replace the speed sensor with a new one.
  • Check the speed sensor signal after cleaning or replacement.

    Click here

NG

CLEAN OR REPLACE FRONT SPEED SENSOR LH

OK

11.

INSPECT BRAKE ACTUATOR ASSEMBLY (POWER SOURCE CIRCUIT)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to Front Speed Sensor LH)

(b) Disconnect the A13 front speed sensor LH connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Turn the ignition switch to ON.

(e) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A13-1 (FL+) - Body ground

Ignition switch ON

11 to 14 V

NG

GO TO STEP 14

OK

12.

INSPECT BRAKE ACTUATOR ASSEMBLY (GROUND CIRCUIT)

(a) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A13-1 (FL+) - A13-2 (FL-)

Ignition switch ON

11 to 14 V

*a

Front view of wire harness connector

(to Front Speed Sensor LH)

NG

GO TO STEP 15

OK

13.

CHECK FRONT SPEED SENSOR ROTOR (FRONT AXLE HUB ASSEMBLY LH) (CHECK FOR FOREIGN MATTER)

(a) Remove the front speed sensor rotor (front axle hub assembly LH).

Click here

(b) Check the speed sensor rotor.

OK:

The rotor is free of scratches, oil, and foreign matter.

NOTICE:

  • If there is oil or foreign matter on the speed sensor rotor, clean the speed sensor rotor.
  • If the speed sensor rotor is damaged, replace the speed sensor rotor with a new one.
  • Check the speed sensor signal after cleaning or replacement.

    Click here

HINT:

  • The front speed sensor rotor is incorporated into the front axle hub assembly.
  • If the front speed sensor rotor needs to be replaced, replace it together with the front axle hub assembly.

Result

Proceed to

OK

A

NG (The speed sensor rotor is damaged.)

B

NG (There is foreign matter on the speed sensor rotor.)

C

A

REPLACE FRONT SPEED SENSOR LH

B

REPLACE FRONT AXLE HUB SUB-ASSEMBLY LH

C

CLEAN FRONT SPEED SENSOR ROTOR (FRONT AXLE HUB ASSEMBLY RH)

14.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - FRONT SPEED SENSOR LH)

(a) Turn the ignition switch off.

(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

(c) Disconnect the A42 skid control ECU (brake actuator assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A42-7 (FL-) - A13-2 (FL-)

Always

Below 1 Ω

A42-7 (FL-) or A13-2 (FR-) - Body ground

Always

10 kΩ or higher

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

15.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - FRONT SPEED SENSOR LH)

(a) Turn the ignition switch off.

(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

(c) Disconnect the A42 skid control ECU (brake actuator assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A42-7 (FL-) - A13-2 (FL-)

Always

Below 1 Ω

A42-7 (FL-) or A13-2 (FR-) - Body ground

Always

10 kΩ or higher

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

16.

CHECK REAR SPEED SENSOR RH INSTALLATION

(a) Turn the ignition switch off.

*1

Rear Speed Sensor RH

*a

OK

*b

NG

*c

No Clearance

(b) Check the speed sensor installation.

OK:

There is no clearance between the sensor and the rear axle hub.

HINT:

Because the rear axle hub and bearing assembly RH cannot be disassembled, if the rear speed sensor needs replacement, replace the rear axle hub and bearing assembly RH.

NG

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH

OK

17.

INSPECT BRAKE ACTUATOR ASSEMBLY (POWER SOURCE CIRCUIT)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to Rear Speed Sensor RH)

(b) Disconnect the d1 rear speed sensor RH connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Turn the ignition switch to ON.

(e) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

d1-2 (RR+) - Body ground

Ignition switch ON

11 to 14 V

NG

GO TO STEP 19

OK

18.

INSPECT BRAKE ACTUATOR ASSEMBLY (GROUND CIRCUIT)

(a) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

d1-2 (RR+) - d1-1 (RR-)

Ignition switch ON

11 to 14 V

*a

Front view of wire harness connector

(to Rear Speed Sensor RH)

OK

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH

NG

GO TO STEP 21

19.

INSPECT SKID CONTROL SENSOR WIRE RH (NO. 1 PARKING BRAKE WIRE ASSEMBLY)

(a) Turn the ignition switch off.

*1

Skid Control Sensor Wire RH (No. 1 Parking Brake Wire Assembly)

*a

Front view of wire harness connector

(to Sensor Side Connector)

*b

Front view of wire harness connector

(to Vehicle Side Connector)

(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

(c) Remove the skid control sensor wire RH (No. 1 parking brake wire assembly).

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

d1-1 (RR-) - dM1-2 (RR-)

Always

Below 1 Ω

d1-1 (RR-) - dM1-1 (RR+)

Always

10 kΩ or higher

d1-1 (RR-) or dM1-2 (RR-) - Body ground

Always

10 kΩ or higher

NOTICE:

Check the speed sensor signal after replacement.

Click here

NG

REPLACE SKID CONTROL SENSOR WIRE RH (NO. 1 PARKING BRAKE WIRE ASSEMBLY)

OK

20.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - SKID CONTROL SENSOR WIRE RH (NO. 1 PARKING BRAKE WIRE ASSEMBLY))

(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.

OK:

The connector is securely connected.

(b) Disconnect the A42 skid control ECU (brake actuator assembly) connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A42-37 (RR-) - dM1-2 (RR-)

Always

Below 1 Ω

A42-37 (RR-) or dM1-2 (RR-) - Body ground

Always

10 kΩ or higher

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

21.

INSPECT SKID CONTROL SENSOR WIRE RH (NO. 1 PARKING BRAKE WIRE ASSEMBLY)

(a) Turn the ignition switch off.

*1

Skid Control Sensor Wire RH (No. 1 Parking Brake Wire Assembly)

*a

Front view of wire harness connector

(to Sensor Side Connector)

*b

Front view of wire harness connector

(to Vehicle Side Connector)

(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

(c) Remove the skid control sensor wire RH (No. 1 parking brake wire assembly).

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

d1-1 (RR-) - dM1-2 (RR-)

Always

Below 1 Ω

d1-1 (RR-) - dM1-1 (RR+)

Always

10 kΩ or higher

d1-1 (RR-) or dM1-2 (RR-) - Body ground

Always

10 kΩ or higher

NOTICE:

Check the speed sensor signal after replacement.

Click here

NG

REPLACE SKID CONTROL SENSOR WIRE RH (NO. 1 PARKING BRAKE WIRE ASSEMBLY)

OK

22.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - SKID CONTROL SENSOR WIRE RH (NO. 1 PARKING BRAKE WIRE ASSEMBLY))

(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.

OK:

The connector is securely connected.

(b) Disconnect the A42 skid control ECU (brake actuator assembly) connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A42-37 (RR-) - dM1-2 (RR-)

Always

Below 1 Ω

A42-37 (RR-) or dM1-2 (RR-) - Body ground

Always

10 kΩ or higher

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

23.

CHECK REAR SPEED SENSOR LH INSTALLATION

(a) Turn the ignition switch off.

*1

Rear Speed Sensor LH

*a

OK

*b

NG

*c

No Clearance

(b) Check the speed sensor installation.

OK:

There is no clearance between the sensor and the rear axle hub.

HINT:

Because the rear axle hub and bearing assembly LH cannot be disassembled, if the rear speed sensor needs replacement, replace the rear axle hub and bearing assembly LH.

NG

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH

OK

24.

INSPECT BRAKE ACTUATOR ASSEMBLY (POWER SOURCE CIRCUIT)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to Rear Speed Sensor LH)

(b) Disconnect the e1 rear speed sensor LH connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Turn the ignition switch to ON.

(e) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

e1-2 (RL+) - Body ground

Ignition switch ON

11 to 14 V

NG

GO TO STEP 26

OK

25.

INSPECT BRAKE ACTUATOR ASSEMBLY (GROUND CIRCUIT)

(a) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

e1-2 (RL+) - e1-1 (RL-)

Ignition switch ON

11 to 14 V

*a

Front view of wire harness connector

(to Rear Speed Sensor LH)

OK

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH

NG

GO TO STEP 28

26.

INSPECT SKID CONTROL SENSOR WIRE LH (NO. 2 PARKING BRAKE WIRE ASSEMBLY)

(a) Turn the ignition switch off.

*1

Skid Control Sensor Wire LH (No. 2 Parking Brake Wire Assembly)

*a

Front view of wire harness connector

(to Sensor Side Connector)

*b

Front view of wire harness connector

(to Vehicle Side Connector)

(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

(c) Remove the skid control sensor wire LH (No. 2 parking brake wire assembly).

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

e1-1 (RL-) - eM1-2 (RL-)

Always

Below 1 Ω

e1-1 (RL-) - eM1-1 (RL+)

Always

10 kΩ or higher

e1-1 (RL-) or eM1-2 (RL-) - Body ground

Always

10 kΩ or higher

NOTICE:

Check the speed sensor signal after replacement.

Click here

NG

REPLACE SKID CONTROL SENSOR WIRE LH (NO. 2 PARKING BRAKE WIRE ASSEMBLY)

OK

27.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - SKID CONTROL SENSOR WIRE LH (NO. 2 PARKING BRAKE WIRE ASSEMBLY))

(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.

OK:

The connector is securely connected.

(b) Disconnect the A42 skid control ECU (brake actuator assembly) connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A42-23 (RL-) - eM1-2 (RL-)

Always

Below 1 Ω

A42-23 (RL-) or eM1-2 (RL-) - Body ground

Always

10 kΩ or higher

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

28.

INSPECT SKID CONTROL SENSOR WIRE LH (NO. 2 PARKING BRAKE WIRE ASSEMBLY)

(a) Turn the ignition switch off.

*1

Skid Control Sensor Wire LH (No. 2 Parking Brake Wire Assembly)

*a

Front view of wire harness connector

(to Sensor Side Connector)

*b

Front view of wire harness connector

(to Vehicle Side Connector)

(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

(c) Remove the skid control sensor wire LH (No. 2 parking brake wire assembly).

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

e1-1 (RL-) - eM1-2 (RL-)

Always

Below 1 Ω

e1-1 (RL-) - eM1-1 (RL+)

Always

10 kΩ or higher

e1-1 (RL-) or eM1-2 (RL-) - Body ground

Always

10 kΩ or higher

NOTICE:

Check the speed sensor signal after replacement.

Click here

NG

REPLACE SKID CONTROL SENSOR WIRE LH (NO. 2 PARKING BRAKE WIRE ASSEMBLY)

OK

29.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - SKID CONTROL SENSOR WIRE LH (NO. 2 PARKING BRAKE WIRE ASSEMBLY))

(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.

OK:

The connector is securely connected.

(b) Disconnect the A42 skid control ECU (brake actuator assembly) connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A42-23 (RL-) - eM1-2 (RL-)

Always

Below 1 Ω

A42-23 (RL-) or eM1-2 (RL-) - Body ground

Always

10 kΩ or higher

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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