Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

NO. 28 GEAR POSITION INDICATOR LIGHT ILLUMINATES IN D RANGE OR P, N, R POSITIONS DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	Inspect the voltage at the TCM terminal A7. (See TCM INSPECTION .) Is the voltage normal?	Yes	Inspect the instrument cluster.
1		No	Inspect the M range switch. If the M range switch is normal, inspect for continuity between the M range switch and TCM terminal A7.
2	Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If malfunction remains, inspect the related Service Bulletins and/or On-line Repair 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.