Diagnostic Procedure

With CONSULT-III 

• Select "SELF-DIAG RESULTS" mode for "TRANSMISSION" with CONSULT-III.

Without CONSULT-III 

Perform the self-diagnosis. Refer to "SELF-DIAGNOSTIC RESULT MODE ".

Is a malfunction in the CAN communication indicated in the results? 

Yes: Check CAN communication line. Refer to "DTC U1000 CAN COMMUNICATION LINE ".

NO: GO TO 2.

With CONSULT-III 

1. Turn ignition switch ON.
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-III.
3. Read out ON/OFF switching action of "MANU MODE SW", "NON M-MODE SW", "UP SW LEVER", "DOWN SW LEVER".

Without CONSULT-III 

Drive vehicle in the manual mode, and confirm that the actual gear position and the meter's indication of the position mutually coincide when the selector lever is shifted to the "+ (up)" or "- (down)" side (1st → 5th gear).

OK or NG 

OK: GO TO  4.

NG: GO TO  3.

Check the following.

• Manual mode switch. Refer to "COMPONENT INSPECTION ".
• Pin terminals for damage or loose connection with harness connector.
• Open circuit or short to ground or short to power in harness or connector for A/T device (manual mode switch).
• Unified meter and A/C amp. Refer to "COMBINATION METERS ".

OK or NG 

OK: GO TO  4.

NG: Repair or replace damaged parts.

Perform "DTC Confirmation Procedure". Refer to "DTC CONFIRMATION PROCEDURE ".

OK or NG 

OK: INSPECTION END 

NG: GO TO 5.

Check TCM power supply and ground circuit. Refer to "MAIN POWER SUPPLY AND GROUND CIRCUIT ".

OK or NG 

OK: GO TO 6.

NG: Repair or replace damaged parts.

Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector

OK or NG 

OK: Replace the control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".

NG: Repair or replace damaged parts.