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Up to 08/2009





LIGHTING (EXT): LIGHTING SYSTEM: B2417,B2418: Headlight Beam Level Control Motor LH Malfunction
B2418 - Headlight Beam Level Control Motor RH Malfunction

DESCRIPTION

The headlight leveling motor receives a signal from the AFS ECU (headlight swivel ECU assembly) to operate. The AFS ECU (headlight swivel ECU assembly) receives a signal indicating the operating conditions of the headlight leveling motor.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK FOR DTC

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B2417 or B2418 is not output.

NG -- PERFORM ACTIVE TEST USING TECHSTREAM

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

2. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Start the engine.

(e) Enter the following menus: Body Electrical / AFS / Active Test.

(f) Check that the leveling motors operate.

AFS





OK:

Headlight leveling motors operate normally.

NG -- CHECK HARNESS AND CONNECTOR (BATTERY - AFS ECU)
OK -- Continue to next step.

3. REPLACE HEADLIGHT LEVELING MOTOR

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

(b) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B2417 or B2418 is not output.

NG -- REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) Components

OK -- END

4. CHECK HARNESS AND CONNECTOR (BATTERY - AFS ECU)

(a) Disconnect the A53 AFS ECU (headlight swivel ECU assembly) connector.





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

Standard Voltage:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (AFS ECU - BODY GROUND)

(a) Disconnect the A53 AFS ECU (headlight swivel ECU assembly) connector.





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

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (AFS ECU - HEADLIGHT LEVELING MOTOR)

(a) Disconnect the A53 AFS ECU (headlight swivel ECU assembly) connector.





(b) Disconnect the A21 or A29 headlight leveling motor connector.

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

Standard Resistance:

LH Side (B2417)





RH Side (B2418)





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

7. INSPECT AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY)

(a) Reconnect the A53 AFS ECU (headlight swivel ECU assembly) connector.





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

Standard Voltage:

LH Side (B2417)





RH Side (B2418)





Text in Illustration





NG -- REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) Components
OK -- Continue to next step.

8. REPLACE HEADLIGHT LEVELING MOTOR

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

(b) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B2417 or B2418 is not output.

NG -- REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) Components

OK -- END