4WD Control ECU Communication Stop Mode

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: 4WD Control ECU Communication Stop Mode

4WD Control ECU Communication Stop Mode

DESCRIPTION





HINT: With vehicles with 2GR-FSE and 4WD only.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK CAN BUS LINE FOR DISCONNECTION (4WD ECU SUB BUS LINE)
(a) Turn the engine switch off.
(b) Disconnect the 4WD ECU connector (U52).




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






NG -- REPAIR OR REPLACE 4WD ECU SUB BUS LINE OR CONNECTOR (CANH, CANL)
OK -- Continue to next step.

2. CHECK WIRE HARNESS (IG1, GND)




(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:





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






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE 4WD ECU