Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

VEHICLE DOES NOT MOVE IN D RANGE, OR IN R POSITION DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	When the vehicle is stopped on a flat, level road and the engine is off, does the vehicle move when pushed? (in D range or N, R positions with the brake pedal released)	Yes	Go to the next step.
1		No	Inspect for parking mechanism. (See PARKING MECHANISM OUTLINE .)
2	Disconnect the TCM connector. Is the resistance between ground terminal 2M or 2Q at the TCM connector and body ground 5.0 ohms or less?	Yes	Go to the next step.
2		No	Repair open ground circuit.
3	Inspect the pressure control solenoid circuit. (See SOLENOID VALVE INSPECTION .) Is it normal?	Yes	Overhaul the control valve body and repair or replace any malfunctioning parts. (See AUTOMATIC TRANSAXLE RC4A-EL - OVERHAUL .) If any problem remains, overhaul the transmission and repair or replace any malfunctioning parts. (See AUTOMATIC TRANSAXLE RC4A-EL - OVERHAUL .)
3		No	Repair or replace any malfunctioning parts.
4	Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. If the 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. (See TCM REMOVAL/INSTALLATION .)