29

Does not upshift in M range

DESCRIPTION

• Gear position indicator light in instrument cluster illuminates, but the vehicle does not upshift when the selector lever is pushed to “+” side or steering shift switch “UP” is pulled.

POSSIBLE CAUSE

• Up switch or related wiring harness malfunction

• Steering shift switch or related circuit malfunction.

STEP

INSPECTION

ACTION

1

Inspect the voltage at the TCM terminal 2J.

(See TCM INSPECTION [SJ6A-EL].)

Is the voltage normal?

Yes

Inspect the instrument cluster.

No

Inspect the up switch.

• If the up switch is normal, inspect for continuity between the up switch and TCM terminal 2J.

Inspect steering shift switch.

• If the steering shift switch is normal, inspect for continuity between the steering shift switch and TCM terminal 2AF.

2

• Verify test results.

• If normal, return to the diagnostic index to service any additional symptoms.

• If malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.

• If the vehicle is repaired, troubleshooting completed.

• If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM.