Toyota CH-R Service Manual: Transmission Range Sensor Circuit (PRNDL Input) (P0705)

Toyota CH-R Service Manual / K114 Cvt / Continuously Variable Transaxle System / Transmission Range Sensor Circuit (PRNDL Input) (P0705)

DESCRIPTION

The park/neutral position switch and transmission control switch (shift lock control unit assembly) detect the shift lever position and send signals to the ECM.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P0705

Transmission Range Sensor Circuit (PRNDL Input)

When the ignition switch is ON and the battery voltage is 10.5 V or more, any one of the following conditions is met (2 trip detection logic):

  • 2 or more signals are ON simultaneously for 2 seconds or more for (NSW, P, N), R, D input signals.
  • NSW, P, R, N, D input signals are all OFF simultaneously for 60 seconds or more.
  • When the S signal (M position switch signal) is ON, any of the NSW, P, R, N input signals is ON simultaneously for 2 seconds or more.
  • Open or short in park/neutral position switch circuit
  • Park/neutral position switch
  • Transmission control switch

    (Shift lock control unit assembly)

  • ECM

Comes on

DTC stored
DTC Detection Condition Patterns:
 

Vehicle Condition

Pattern 1

Pattern 2

Pattern 3

Diagnostic Condition

Ignition switch ON and battery voltage is 10.5 V or more

○

○

○

Malfunction Condition

2 or more signals are ON simultaneously for (NSW, P, N), R, D input signals.

○

-

-

NSW, P, R, N, D input signals are all OFF simultaneously.

-

○

-

When the S signal (M position switch signal) is ON, any of the NSW, P, R, N input signals is ON simultaneously.

-

-

○

Duration

2 seconds or more

60 seconds or more

2 seconds or more

Detection Logic

2 trip detection logic

2 trip detection logic

2 trip detection logic

HINT:

This DTC is output when any one of the above detection patterns is met.

MONITOR DESCRIPTION

For safety, the park/neutral position switch detects the gearshift position so that engine can be started only when the vehicle is in the P or N shift position.

When the park/neutral position switch and shift lock control unit assembly (transmission control switch) send more than one signal at a time from switch positions P, R, N, D, M, the ECM interprets this as a fault in the switch. The ECM will turn on the MIL and store the DTC.

MONITOR STRATEGY

Related DTCs

P0705: Park/neutral position switch / Verify switch input

Required sensors/Components

Park/neutral position switch, Transmission control switch

Frequency of operation

Continuous

Duration

Condition (A) and (C): 2 seconds

Condition (B): 60 seconds

MIL operation

2 driving cycles

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

All

The monitor will run whenever the following DTCs are not present

None

Battery voltage

10.5 V or more

Time after Battery voltage 8 V or more

0.5 seconds or more

Write Inhibit

permit

Time after Write status forbiddance to permit

0.5 seconds or more

Ignition switch

ON

Time after Ignition switch OFF to ON

0.5 seconds or more

Starter

OFF

Time after Starter ON to OFF

0.5 seconds or more

TYPICAL MALFUNCTION THRESHOLDS

One of the following conditions is met: Condition (A), (B) or (C)

Condition (A):Any two of the following conditions are met:

One of the following conditions is met:

(a) or (b) or (c)

(a) P position signal

ON

(b) N position signal

ON

(c) Park/neutral position signal

ON

R position signal

ON

D position signal

ON
Condition (B): All of the following conditions are met:

P position signal

OFF

N position signal

OFF

Park/neutral position signal

OFF

R position signal

OFF

D position signal

OFF
Condition (C):

S/M range position switch

ON

COMPONENT OPERATING RANGE

Park/neutral position switch and transmission control switch signal

Only one signal to the ECM.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Perform initialization when parts related to the continuously variable transaxle are replaced.

    Click here

  • Check that no DTCs are stored after performing initialization.

    Click here

  • Perform the universal trip to clear permanent DTCs.

    Click here

  • Inspect the fuses for circuits related to this system before performing the following procedure.

HINT:

After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.

  1. Turn the ignition switch to ON.
  2. Wait with the shift lever in each position (P, R, N, D and M) for 60 seconds or more each.
  3. Wait for 2 seconds or more with the shift lever in M.
  4. Turn the ignition switch off.
  5. Perform steps (1) through (4) again.
  6. Check for DTCs again.

    Click here

PROCEDURE

1.

READ VALUE USING TECHSTREAM (NEUTRAL POSITION SW SIGNAL AND SHIFT SW STATUS)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Data List.

Powertrain > Engine and ECT > Data List

Tester Display

Neutral Position SW Signal

Shift SW Status (P Range)

Shift SW Status (R Range)

Shift SW Status (N Range)

Shift SW Status (D Range)

(e) According to the display on the Techstream, read the Data List while driving.

Powertrain > Engine and ECT > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Neutral Position SW Signal

Park/neutral position switch status

OFF or ON
  • OFF: Shift lever not in P or N
  • ON: Shift lever in P or N

When the shift lever position displayed on the Techstream differs from the actual position, the adjustment of the park/neutral position switch or shift cable may be incorrect.

Shift SW Status (P Range)

Park/neutral position switch status

OFF or ON
  • OFF: Shift lever not in P
  • ON: Shift lever in P

When the shift lever position displayed on the Techstream differs from the actual position, the adjustment of the park/neutral position switch or shift cable may be incorrect.

Shift SW Status (R Range)

Park/neutral position switch status

OFF or ON
  • OFF: Shift lever not in R
  • ON: Shift lever in R

When the shift lever position displayed on the Techstream differs from the actual position, the adjustment of the park/neutral position switch or shift cable may be incorrect.

Shift SW Status (N Range)

Park/neutral position switch status

OFF or ON
  • OFF: Shift lever not in N
  • ON: Shift lever in N

When the shift lever position displayed on the Techstream differs from the actual position, the adjustment of the park/neutral position switch or shift cable may be incorrect.

Shift SW Status (D Range)

Park/neutral position switch status

OFF or ON
  • OFF: Shift lever not in D or M
  • ON: Shift lever in D or M

When the shift lever position displayed on the Techstream differs from the actual position, the adjustment of the park/neutral position switch or shift cable may be incorrect.

Result

Proceed to

Data display is within Normal Condition range

A

Data display is not within Normal Condition range

B
B

GO TO STEP 7

A

2.

READ VALUE USING TECHSTREAM (SPORTS MODE SELECTION SW)

(a) Enter the following menus: Powertrain / Engine and ECT / Data List.

Powertrain > Engine and ECT > Data List

Tester Display

Sports Mode Selection SW

(b) In accordance with the display on the Techstream, read the Data List.

Powertrain > Engine and ECT > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Sports Mode Selection SW

Sport mode select switch status

OFF or ON
  • ON: Shift lever in M, "+" or "-"
  • OFF: Shift lever not in M, "+" or "-"

-

Result

Proceed to

Data display is within Normal Condition range

A

Data display is not within Normal Condition range

B
A

CHECK INTERMITTENT PROBLEMS

B

3.

INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH (POWER SOURCE))

(a) Disconnect the shift lock control unit assembly (transmission control switch) connector.

*a

Front view of wire harness connector

(to Shift Lock Control Unit Assembly (Transmission Control Switch))

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

F17-4 (IG) - Body ground

Ignition switch ON

11 to 14 V

F17-4 (IG) - Body ground

Ignition switch off

Below 1 V
NG

CHECK POWER SOURCE CIRCUIT (TRANSMISSION CONTROL SWITCH)
OK

4.

INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH)

(a) Disconnect the F17 shift lock control unit assembly (transmission control switch) connector.

*a

Component without harness connected

(Shift Lock Control Unit Assembly (Transmission Control Switch))

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

4 (IG) - 5 (S)

Shift lever in M, "+" or "-"

Below 1 Ω

4 (IG) - 5 (S)

Shift lever not in M, "+" or "-"

10 kΩ or higher
NG

REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY

OK

5.

CHECK HARNESS AND CONNECTOR (SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH) - ECM)

(a) Disconnect the F17 shift lock control unit assembly (transmission control switch) connector.

(b) Disconnect the A38 ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F17-5 (S) - A38-59 (S)

Always

Below 1 Ω

F17-5 (S) - Body ground

Always

10 kΩ or higher

A38-59 (S) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH) - ECM)
OK

6.

REPLACE ECM

(a) Replace the ECM.

Click here

NEXT

PERFORM INITIALIZATION

7.

CHECK HARNESS AND CONNECTOR (BATTERY - PARK/NEUTRAL POSITION SWITCH)

(a) Disconnect the park/neutral position switch connector.

*a

Front view of wire harness connector

(to Park/Neutral Position Switch)

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

C36-1 (RB) - Body ground

Ignition switch ON

11 to 14 V

C36-1 (RB) - Body ground

Ignition switch off

Below 1 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - PARK/NEUTRAL POSITION SWITCH)
OK

8.

INSPECT PARK/NEUTRAL POSITION SWITCH

(a) Disconnect the C36 park/neutral position switch connector.

*a

Component without harness connected

(Park/Neutral Position Switch)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

4 (B) - 9 (L)

Shift lever in P or N

Below 1 Ω

Shift lever not in P or N

10 kΩ or higher

1 (RB) - 3 (PL)

Shift lever in P

Below 1 Ω

Shift lever not in P

10 kΩ or higher

1 (RB) - 2 (RL)

Shift lever in R

Below 1 Ω

Shift lever not in R

10 kΩ or higher

1 (RB) - 8 (NL)

Shift lever in N

Below 1 Ω

Shift lever not in N

10 kΩ or higher

1 (RB) - 7 (DL)

Shift lever in D or M

Below 1 Ω

Shift lever not in D or M

10 kΩ or higher
NG

REPLACE PARK/NEUTRAL POSITION SWITCH

OK

9.

CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM)

(a) Disconnect the C36 park/neutral position switch connector.

(b) Disconnect the C63 and A38 ECM connectors.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C36-3 (PL) - C63-70 (P)

Always

Below 1 Ω

C36-2 (RL) - C63-64 (R)

Always

Below 1 Ω

C36-8 (NL) - C63-69 (N)

Always

Below 1 Ω

C36-7 (DL) - C63-65 (D)

Always

Below 1 Ω

C36-4 (B) - A38-23 (NSW)

Always

Below 1 Ω

C36-3 (PL) or C63-70 (P) - Body ground and other terminals

Always

10 kΩ or higher

C36-2 (RL) or C63-64 (R) - Body ground and other terminals

Always

10 kΩ or higher

C36-8 (NL) or C63-69 (N) - Body ground and other terminals

Always

10 kΩ or higher

C36-7 (DL) or C63-65 (D) - Body ground and other terminals

Always

10 kΩ or higher

C36-4 (B) or A38-23 (NSW) - Body ground and other terminals

Always

10 kΩ or higher
OK

GO TO STEP 6

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM)
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