NO.29 DOES NOT UPSHIFT IN M RANGE [SJ6A-EL]


id050307803400

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.

Diagnostic procedure

STEP

INSPECTION

ACTION

1
Inspect the voltage at the TCM terminal 2J.
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 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.