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 (UP) or related circuit malfunction.

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • Inspect the UP SW PID value using the M-MDS when the selector lever is pushed to “+” side. (See PID/DATA MONITOR INSPECTION [SJ6A-EL].) • Is the UP SW PID value normal? | Yes | Go to the next step.
No | Inspect the up switch. (See SELECTOR LEVER COMPONENT INSPECTION.) If the up switch has a malfunction: • Replace the selector lever component. (See SELECTOR LEVER REMOVAL/INSTALLATION.) If the up switch is normal: • Inspect for continuity between selector lever component terminal D and TCM terminal 2J. • Repair or replace the suspected wiring harness.
2 | • Inspect the UP SW PID value using the M-MDS when the steering shift switch “UP” is pulled. (See PID/DATA MONITOR INSPECTION [SJ6A-EL].) • Is the UP SW PID value normal? | Yes | Inspect the instrument cluster. (See INSTRUMENT CLUSTER INSPECTION.) Replace the instrument cluster, if necessary. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
No | Inspect the steering shift switch. (See STEERING SHIFT SWITCH INSPECTION.) If the steering shift switch has a malfunction: • Replace the steering shift switch. (See STEERING SHIFT SWITCH REMOVAL/INSTALLATION.) If the steering shift switch is normal: • Inspect for continuity between steering shift switch and TCM terminal 2AF. • Repair or replace the suspected wiring harness.
3 | • 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. (See TCM REMOVAL/INSTALLATION [SJ6A-EL].)