AWD Warning Lamp Does Not Turn ON When the Ignition Switch Is Turned to ON

TROUBLE DIAGNOSIS FOR SYMPTOMS


AWD Warning Lamp Does Not Turn ON When the Ignition Switch Is Turned to ON


DIAGNOSTIC PROCEDURE
1.CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to Scan Tool Testing and Procedures.
Is the "CAN COMM CIRCUIT [U1000]" displayed?
YES - Perform trouble diagnosis for CAN communication line.
NO - GO TO 2.
2.CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to Pinout Values and Diagnostic Parameters.
OK or NG
OK - GO TO 3.
NG - Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
3.CHECK OUTPUT SIGNAL WITH UNIFIED METER AND A/C AMP.

With CONSULT-III
1. Turn ignition switch "ON". (Do not start engine.)
2. Select "DATA MONITOR" mode for "METER A/C AMP" with CONSULT-III.
3. Start the engine, and then make sure that "4WD W/L" display turns from "ON" to "OFF" after several seconds.





OK or NG
OK - GO TO 4.
NG - Perform trouble diagnosis for combination meter. Refer to Trouble Diagnosis.
4.SYMPTOM CHECK
Check again.
OK or NG
OK INSPECTION END
NG - Replace unified meter control unit assembly. Refer to Disassembly and Assembly of Combination Meter.