Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0725 DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED Has FREEZE FRAME PID DATA been recorded?	Yes	Go to next step.
1		No	Record FREEZE FRAME PID DATA on repair order, then go to next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Inspect for related Service Bulletins and/or online repair information availability. Is any related repair information available?	Yes	Perform repair or diagnosis according to available repair information. If vehicle is not repaired, go to next step.
2		No	Go to next step.
3	VERIFY STORED DTC Turn ignition key to ON (engine off). Verify stored DTC. Is DTC P0335 present?	Yes	Go to appropriate DTC inspection.
3		No	Go to next step.
4	INSPECT TCM CONNECTOR FOR POOR CONNECTION Turn ignition key to OFF. Disconnect TCM condition. Inspect for poor connection (damage, pulled-out terminals, corrosion, etc.). Is connection okay?	Yes	Go to next step.
4		No	Repair or replace connector and/or terminals, then go to Step 9.
5	INSPECT PCM CONNECTOR FOR POOR CONNECTION Disconnect PCM connector. Inspect for poor connection (damage, pulled-out terminals, corrosion, etc.). Is connection okay?	Yes	Go to next step.
5		No	Repair or replace connector and/or terminals, then go to Step 9.
6	INSPECT HARNESS FOR SHORT TO POWER Connect voltmeter to TCM terminal AG. Turn ignition key to ON (engine off). Inspect voltage at TCM terminal AG (harness-side). Is voltage B+?	Yes	Repair or replace harness, then go to Step 9.
6		No	Go to next step.
7	INSPECT HARNESS FOR OPEN CIRCUIT Turn ignition key to OFF. Inspect for continuity between TCM terminal AG (harness-side) and PCM terminal 3O (harness-side). Is there continuity?	Yes	Go to next step.
7		No	Repair or replace harness, then go to Step 9.
8	INSPECT HARNESS FOR SHORT TO GROUND Connect voltmeter to TCM terminal AG. Inspect for continuity between TCM terminal AG (harness-side) and body ground. Is there continuity?	Yes	Repair or replace harness, then go to next step.
8		No	Go to next step.
9	VERIFY TROUBLESHOOTING OF DTC P0725 COMPLETED. Make sure to reconnect all disconnected connectors. Clear DTC from memory using WDS or equivalent. Drive vehicle with vehicle speed 60 km/h {37 mph} or above for 10 seconds or more. Vehicle speed (VSS PID): 60 km/h {37 mph} Is pending code present?	Yes	Replace TCM, then go to next step. (See TRANSMISSION CONTROL MODULE (TCM) REMOVAL/INSTALLATION .)
9		No	Go to next step.
10	VERIFY AFTER REPAIR PROCEDURE Perform "AFTER REPAIR PROCEDURE ". (See AFTER REPAIR PROCEDURE .) Are any DTCs present?	Yes	Go to applicable DTC inspection.
10		No	Troubleshooting completed.