Diagnostic procedure

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

STEP	INSPECTION		ACTION
1	Does the vehicle creep when selector lever is moved slightly in N position?	Yes	Go to the next step.
1		No	Inspect and adjust the selector lever. (See SELECTOR LEVER COMPONENT INSPECTION .) (See SELECTOR CABLE ADJUSTMENT .) Perform N position learning. (See TCM REMOVAL/INSTALLATION [AW6A-EL] .)
2	Inspect following solenoid (See SOLENOID VALVE INSPECTION [AW6A-EL] .) Shift solenoid C Shift solenoid D Are these solenoids normal?	Yes	Overhaul the transaxle and repair or replace any malfunctioning parts. (See .)
2		No	Inspect the coupler component. If normal, replace the control valve body. (See CONTROL VALVE BODY REMOVAL/INSTALLATION [AW6A-EL] .)
3	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.