Diagnostic procedure

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

STEP	INSPECTION		ACTION
1	INSPECT ABS WHEEL-SPEED SENSOR FOR SHORT TO GROUND Switch the ignition to off. Disconnect the DSC HU/Control Module connectors. Inspect for continuity between the following DSC HU/Control Module connector terminals (vehicle harness-side) and body ground: RF ABS wheel-speed sensor (+): F RF ABS wheel-speed sensor (-): C LF ABS wheel-speed sensor (+): AG LF ABS wheel-speed sensor (-): AJ RR ABS wheel-speed sensor (+): AA RR ABS wheel-speed sensor (-): X LR ABS wheel-speed sensor (+): L LR ABS wheel-speed sensor (-): O Is there continuity?	Yes	Go to the next step.
1		No	Go to Step 3.
2	INSPECT ABS WHEEL-SPEED SENSOR WIRING HARNESS FOR SHORT TO GROUND Disconnect the ABS wheel-speed sensor connectors. Inspect for continuity between the following DSC HU/Control Module connector terminals (vehicle harness-side) and body ground: RF ABS wheel-speed sensor (+): F RF ABS wheel-speed sensor (-): C LF ABS wheel-speed sensor (+): AG LF ABS wheel-speed sensor (-): AJ RR ABS wheel-speed sensor (+): AA RR ABS wheel-speed sensor (-): X LR ABS wheel-speed sensor (+): L LR ABS wheel-speed sensor (-): O Is there continuity?	Yes	Repair or replace the wiring harness, then go to Step 5.
2		No	Replace the ABS wheel-speed sensor, then go to Step 5. (See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION .) (See REAR ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION [2WD] .) (See REAR ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION [AWD] .)
3	INSPECT FOR OPEN CIRCUIT IN ABS WHEEL-SPEED SENSOR WIRING HARNESS Inspect for continuity between the DSC HU/Control Module connectors (vehicle harness-side) and the following vehicle harness-side connector terminals of the ABS wheel-speed sensors: RF ABS wheel-speed sensor (+): F-A RF ABS wheel-speed sensor (-): C-B LF ABS wheel-speed sensor (+): AG-A LF ABS wheel-speed sensor (-): AJ-B RR ABS wheel-speed sensor (+): AA-A RR ABS wheel-speed sensor (-): X-B LR ABS wheel-speed sensor (+): L-A LR ABS wheel-speed sensor (-): O-B Is there continuity?	Yes	Go to the next step.
3		No	Repair or replace the wiring harness, then go to the next step.
4	INSPECT ABS WHEEL-SPEED SENSOR WIRING HARNESS FOR SHORT TO POWER SUPPLY Inspect for voltage between the following DSC HU/Control Module connector terminals (vehicle harness-side) and body ground: RF ABS wheel-speed sensor (+): F RF ABS wheel-speed sensor (-): C LF ABS wheel-speed sensor (+): AG LF ABS wheel-speed sensor (-): AJ RR ABS wheel-speed sensor (+): AA RR ABS wheel-speed sensor (-): X LR ABS wheel-speed sensor (+): L LR ABS wheel-speed sensor (-): O Is the voltage 1 V or less ?	Yes	Go to the next step.
4		No	Repair or replace the wiring harness, then go to the next step.
5	VERIFY THAT THE SAME DTC IS NOT PRESENT Reconnect all disconnected connectors. Clear the DTCs from the memory. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)] .) Are the same DTCs present?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the DSC HU/Control Module, then go to the next step. (See DSC HU/CONTROL MODULE REMOVAL/INSTALLATION .)
5		No	Go to the next step.
6	VERIFY THAT NO OTHER DTCS ARE PRESENT Are any other DTCs output?	Yes	Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)] .)
6		No	DTC troubleshooting completed.