Mazda 6 Service Manual: Theft-deterrent control module inspection

1. Remove the theft-deterrent control module without disconnecting the connectors.

2. Measure the voltage at the theft-deterrent control module terminals as indicated below.

3. Disconnect the theft-deterrent control module connector before inspecting for continuity at terminals L, Q, S, T, and V.

4. If not as specified, inspect the parts listed under Action.

• If the parts and wiring harnesses are okay but the system still does not work properly, replace the theft-deterrent control module.

Terminal Voltage Table (Reference)

W Terminal Inspection

1. Connect SST

(WDS or equivalent) to the vehicle DLC-2 16-pin connector.

2. Access and monitor RPM of PID using SST (WDS or equivalent).

• If engine speed signal normal, go to next step.
• If engine speed signal abnormal, inspect the ABS (ABS/TCS) HU/CM, DSC HU/CM and related wiring harness.

3. Inspect for continuity between the ABS (ABS/TCS) HU/CM terminal X and the theft-deterrent control module terminal W, or DSC HU/CM terminal AB and the theft-deterrent control module terminal W using an ohmmeter.

• If not continuity, replace the related wiring harness.
• If wiring harness is normal, replace the theft-deterrent control.