Toyota CH-R Service Manual: Headlight Beam Level Control Motor LH Malfunction (B2417,B2418)

Toyota CH-R Service Manual / Lighting (ext) / Automatic Headlight Beam Level Control System / Headlight Beam Level Control Motor LH Malfunction (B2417,B2418)

DESCRIPTION

The headlight unit (headlight leveling motor) receives a signal from the headlight control ECU sub-assembly to operate. The headlight control ECU sub-assembly receives a signal indicating the operating conditions of the headlight unit (headlight leveling motor).

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

B2417

Headlight Beam Level Control Motor LH Malfunction

Malfunction in headlight leveling motor LH

  • Headlight ECU sub-assembly LH
  • Headlight Unit Assembly LH (Headlight Leveling Motor)

-

B2418

Headlight Beam Level Control Motor RH Malfunction

Malfunction in headlight leveling motor RH

  • Headlight ECU sub-assembly RH
  • Headlight Unit Assembly RH (Headlight Leveling Motor)

-

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

After the headlight ECU sub-assembly LH is replaced, vehicle information registration and initialization are necessary.

Click here

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Click here

Body Electrical > HL AutoLeveling > Clear DTCs
NEXT

2.

CHECK FOR DTC

(a) Turn the ignition switch to ON.

(b) Turn on the headlights using the headlight dimmer switch.

(c) Check for DTCs.

Click here

Body Electrical > HL AutoLeveling > Trouble Codes

Result

Proceed to

DTC B2417 and B2418 output does not occur

A

DTC B2417 output occurs

B

DTC B2418 output occurs

C

A

USE SIMULATION METHOD TO CHECK

C

GO TO STEP 5

B

3.

PERFORM ACTIVE TEST USING TECHSTREAM (DRIVE THE LEVELING MOTOR)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / HL AutoLeveling / Active Test.

(e) Read the Data List according to the display on the Techstream.

(f) Using the Techstream, perform the Active Test.

Click here

Body Electrical > HL AutoLeveling > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Drive The Leveling Motor

Headlight leveling motor upward or downward operation

Stop/Down/Up

Perform the Active Test with the engine started and vehicle stopped

Body Electrical > HL AutoLeveling > Active Test

Tester Display

Drive The Leveling Motor

Result

Proceed to

The Active Test is performed normally

A

The Active Test is not performed normally

B

A

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH

B

4.

CHECK HEADLIGHT UNIT ASSEMBLY LH (HEADLIGHT LEVELING MOTOR)

(a) Temporarily replace the headlight unit assembly LH (headlight leveling motor) with a new or normally functioning one.

  • for Halogen Headlight: Click here
  • for LED Headlight: Click here

(b) Using the Techstream, perform the Active Test.

Click here

Body Electrical > HL AutoLeveling > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Drive The Leveling Motor

Headlight leveling motor upward or downward operation

Stop/Down/Up

Perform the Active Test with the engine started and vehicle stopped

Body Electrical > HL AutoLeveling > Active Test

Tester Display

Drive The Leveling Motor

Result

Proceed to

The Active Test is performed normally

A

The Active Test is not performed normally

B

A

END (HEADLIGHT UNIT ASSEMBLY LH [HEADLIGHT LEVELING MOTOR] WAS DEFECTIVE)

B

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH

5.

PERFORM ACTIVE TEST USING TECHSTREAM (DRIVE THE LEVELING MOTOR)

(a) Using the Techstream, perform the Active Test.

Click here

Body Electrical > HL AutoLeveling > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Drive The Leveling Motor

Headlight leveling motor upward or downward operation

Stop/Down/Up

Perform the Active Test with the engine started and vehicle stopped

Body Electrical > HL AutoLeveling > Active Test

Tester Display

Drive The Leveling Motor

Result

Proceed to

The Active Test is performed normally

A

The Active Test is not performed normally

B

A

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH

B

6.

CHECK HEADLIGHT UNIT ASSEMBLY RH (HEADLIGHT LEVELING MOTOR)

(a) Temporarily replace the headlight unit assembly RH (headlight leveling motor) with a new or normally functioning one.

  • for Halogen Headlight: Click here
  • for LED Headlight: Click here

(b) Using the Techstream, perform the Active Test.

Click here

Body Electrical > HL AutoLeveling > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Drive The Leveling Motor

Headlight leveling motor upward or downward operation

Stop/Down/Up

Perform the Active Test with the engine started and vehicle stopped

Body Electrical > HL AutoLeveling > Active Test

Tester Display

Drive The Leveling Motor

Result

Proceed to

The Active Test is performed normally

A

The Active Test is not performed normally

B

A

END (HEADLIGHT UNIT ASSEMBLY RH [LEVELING MOTOR] WAS DEFECTIVE)

B

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH

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