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	INSPECT COMBINED SENSOR CONNECTOR CONDITION Switch the ignition to off. Disconnect the negative battery cable. Disconnect the combined sensor connector. Inspect the connector and terminals (corrosion, damage, pin disconnection) Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to Step 5.
1		No	Go to the next step.
2	INSPECT DSC HU/CM CONNECTOR CONDITION Disconnect the DSC HU/CM connector. Inspect the connector and terminals (corrosion, damage, pin disconnection). Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to Step 5
2		No	Go to the next step.
3	INSPECT COMBINED SENSOR COMMUNICATION CIRCUIT FOR SHORT TO GROUND Inspect for continuity between the following terminals and body ground. Combined sensor terminal C (wiring harness-side) Combined sensor terminal B (wiring harness-side) Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to ground, then go to Step 5
3		No	Go to the next step.
4	INSPECT COMBINED SENSOR POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT Inspect for continuity between the following terminals Combined sensor terminal C (wiring harness-side) and DSC HU/CM terminal G (wiring harness-side) Combined sensor terminal B (wiring harness-side) and DSC HU/CM terminal F (wiring harness-side) Is there continuity?	Yes	Replace the combined sensor, then go to the next step. (See COMBINED SENSOR REMOVAL/INSTALLATION .)
4		No	Repair or replace the wiring harness for a possible open circuit, then go to the next step.
5	VERIFY DTC TROUBLESHOOTING COMPLETED Make sure to reconnect the disconnected connectors Reconnect the negative battery cable Clear the DTC from the DSC HU/CM memory using the M-MDS (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)] ) Perform the DSC DTC inspection (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)] ) Is the same DTC present?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the DSC HU/CM, then go to the next step. (See DSC HU/CM REMOVAL/INSTALLATION .)
5		No	Go to the next step.
6	VERIFY AFTER REPAIR PROCEDURE Are any DTCs present?	Yes	Go to the applicable DTC inspection (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)] .)
6	VERIFY AFTER REPAIR PROCEDURE Are any DTCs present?	No	DTC troubleshooting completed