DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.DTC REPRODUCTION PROCEDURE

With CONSULT-III

1. Start the engine and drive at 30 km/h (19 MPH) or more for approximately 1minute.

2. Perform self-diagnosis for “ALL MODE AWD/4WD”.

Is DTC “P1840” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-73, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.PERFORM TCM SELF-DIAGNOSIS

With CONSULT-III

Perform self-diagnosis for “TRANSMISSION”.

Is any DTCs detected? YES >> Check the DTC. Refer to TM-171, "DTC Index".

NO >> GO TO 2.

2.ERASE SELF-DIAGNOSTIC RESULT

With CONSULT-III

1. Erase self-diagnostic results for “ALL MODE AWD/4WD”.

2. Start the engine and drive vehicle at 30 km/h (19 MPH) or more.

3. Check that A/T CHECK indictor lamp turns OFF.

Does A/T CHECK indicator lamp turn OFF? YES >> GO TO 3.

NO >> Refer to TM-259, "Symptom Table".

3.CHECK TERMINALS AND HARNESS CONNECTORS

Check 4WD control module pin terminals for damage or loose connection with harness connector.

Is inspection result normal? YES >> After turning the ignition switch OFF, perform DTC confirmation procedure again. When DTC “P1840” is detected, Replace 4WD control module. Refer to DLN-91, "Removal and Installation".

NO >> Repair or replace error-detected parts.