NO.29 DOES NOT UPSHIFT IN M RANGE [AW6A-EL, AW6AX-EL]

NO.29 DOES NOT UPSHIFT IN M RANGE [AW6A-EL, AW6AX-EL]SM2445422

NO.29 DOES NOT UPSHIFT IN M RANGE [AW6A-EL, AW6AX-EL]

id050310803400

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.
POSSIBLE CAUSE	• Up switch or related wiring harness malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	• Access the TCM PID UP_SW using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM PID/DATA MONITOR INSPECTION [AW6A-EL, AW6AX-EL].) • Monitor the UP_SW PID with move the selector lever to “+” with M range. • Does the UP_SW PID indicate properly?	Yes	Inspect the instrument cluster.
1		No	Inspect the up switch. • If the up switch is normal, inspect for continuity between the up switch and TCM terminal A3.
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.