Transfer Case: Testing and Inspection

UF1AE TRANSFER: FOUR WHEEL DRIVE CONTROL SYSTEM: TC and CG Terminal Circuit
- TC and CG Terminal Circuit

DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the 4WD control ECU to display a DTC on the multi-information display.

WIRING DIAGRAM





INSPECTION PROCEDURE

HINT
Check the condition of each related circuit connector before troubleshooting Electronic Circuit Inspection Procedure.

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

(a) Check if the CAN communication DTC is output .

Result:





B -- CHECK HARNESS AND CONNECTOR (ECM TO DLC3)

A -- GO TO CAN COMMUNICATION SYSTEM

2. CHECK HARNESS AND CONNECTOR (ECM TO DLC3)

(a) Disconnect the ECM connector.





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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (TC TERMINAL CIRCUIT)
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (DLC3 CG CIRCUIT)

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





Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (CG TERMINAL CIRCUIT)
OK -- Continue to next step.

4. REPAIR OR REPLACE HARNESS OR CONNECTOR (TC TERMINAL CIRCUIT)

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





Standard resistance:





NG -- CHECK HARNESS AND CONNECTOR OR CHECK EACH ECU

OK -- REPLACE 4WD CONTROL ECU