NO.30 DOES NOT DOWNSHIFT IN M RANGE [AW6A-EL, AW6AX-EL]

NO.30 DOES NOT DOWNSHIFT IN M RANGE [AW6A-EL, AW6AX-EL]SM2445423

NO.30 DOES NOT DOWNSHIFT IN M RANGE [AW6A-EL, AW6AX-EL]

id050310803500

30	Does not downshift in M range
DESCRIPTION	• Gear position indicator light in instrument cluster illuminates, but the vehicle does not downshift when the selector lever is pushed to “–” side.
POSSIBLE CAUSE	• Down switch or related wiring harness malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	• Access the TCM PID DWN_SW using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM PID/DATA MONITOR INSPECTION [AW6A-EL, AW6AX-EL].) • Monitor the DWN_SW PID with move the selector lever to “-” with M range. • Does the DWN_SW PID indicate properly?	Yes	Inspect the instrument cluster.
1		No	Inspect the down switch. • If the down switch is normal, inspect for continuity between the down switch and TCM terminal A4.
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.