NO.29 DOES NOT UPSHIFT IN M RANGE[FN4A-EL]

id0503a1803400

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

Note

•  Before following the troubleshooting steps, make sure that the Automatic Transaxle On-board Diagnostic and Automatic Transaxle Basic Inspection are conducted.

Diagnostic procedure

STEP	INSPECTION		ACTION
1	Inspect the UP SW PID value using the M-MDS. (See PCM INSPECTION[ZJ, ZY, Z6].) (See PCM INSPECTION[LF, L3].) Is the UP SW PID value normal?	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 PCM terminal 1M (ZY, Z6)/1K (LF).
2	• Verify the test results. ― If normal, return to the diagnostic index to service any additional symptoms. ― If the malfunction remains, inspect the related Service information and perform repair or diagnosis. • If the vehicle is repaired, troubleshooting is completed. • If the vehicle is not repaired or additional diagnostic information is not available, replace the PCM.

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 Note • Before following the troubleshooting steps, make sure that the Automatic Transaxle On-board Diagnostic and Automatic Transaxle Basic Inspection are conducted.