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Home >> Mazda >> 2016 >> 6 Touring, Standard Trans >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> On-Board Diagnostics [Dynamic Stability Control] >> DTC C0031-01; C0031-13; C0034-01; C0034-13; C0037-01; C0037-13; C003A-01; C003A-13: Abs Wheel-Speed Sensor >> Diagnostic procedure

Diagnostic procedure

STEP INSPECTION ACTION
1 INSPECT ABS WHEEL-SPEED SENSOR FOR SHORT TO GROUND 
  • Switch the ignition to off.
  • Disconnect the DSC HU/CM connector.
  • Inspect for continuity between the following DSC HU/CM connector terminals (vehicle harness-side) and body ground:
    • RF ABS wheel-speed sensor(+): R
    • RF ABS wheel-speed sensor(-): O
    • LF ABS wheel-speed sensor(+): S
    • LF ABS wheel-speed sensor(-): P
    • RR ABS wheel-speed sensor(+): M
    • RR ABS wheel-speed sensor(-): J
    • LR ABS wheel-speed sensor(+): L
    • LR ABS wheel-speed sensor(-): I
  • Is there continuity?
Yes Go to the next step.
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/CM connector terminals (vehicle harness-side) and body ground:
    • RF ABS wheel-speed sensor(+): R
    • RF ABS wheel-speed sensor(-): O
    • LF ABS wheel-speed sensor(+): S
    • LF ABS wheel-speed sensor(-): P
    • RR ABS wheel-speed sensor(+): M
    • RR ABS wheel-speed sensor(-): J
    • LR ABS wheel-speed sensor(+): L
    • LR ABS wheel-speed sensor(-): I
  • Is there continuity?
Yes Refer to the wiring diagram and verify whether or not there is a common connector between the DSC HU/CM connector terminals (vehicle harness-side) and the following vehicle harness-side connector terminals of the ABS wheel-speed sensors:
  • RF ABS wheel-speed sensor (+): R-B
  • RF ABS wheel-speed sensor(-): O-A
  • LF ABS wheel-speed sensor (+): S-B
  • LF ABS wheel-speed sensor(-): P-A
  • RR ABS wheel-speed sensor (+): M-B
  • RR ABS wheel-speed sensor (-): J-A
  • LR ABS wheel-speed sensor (+): L-B
  • LR ABS wheel-speed sensor(-): I-A

If there is a common connector: 

  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
  • Repair or replace the malfunctioning part.

If there is no common connector: 

  • Repair or replace the wiring harness which has a short to ground.

Go to Step 5.
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 .)
3 INSPECT FOR OPEN CIRCUIT IN ABS WHEEL-SPEED SENSOR WIRING HARNESS 
  • Inspect for continuity between the DSC HU/CM connector terminals (vehicle harness-side) and the following vehicle harness-side connector terminals of the ABS wheel-speed sensors:
    • RF ABS wheel-speed sensor(+): R-B
    • RF ABS wheel-speed sensor(-): O-A
    • LF ABS wheel-speed sensor(+): S-B
    • LF ABS wheel-speed sensor(-): P-A
    • RR ABS wheel-speed sensor(+): M-B
    • RR ABS wheel-speed sensor(-): J-A
    • LR ABS wheel-speed sensor(+): L-B
    • LR ABS wheel-speed sensor(-): I-A
  • Is there continuity?
Yes Go to the next step.
No Refer to the wiring diagram and verify whether or not there is a common connector between the DSC HU/CM connector terminals (vehicle harness-side) and the following vehicle harness-side connector terminals of the ABS wheel-speed sensors:
  • RF ABS wheel-speed sensor (+): R-B
  • RF ABS wheel-speed sensor(-): O-A
  • LF ABS wheel-speed sensor (+): S-B
  • LF ABS wheel-speed sensor(-): P-A
  • RR ABS wheel-speed sensor (+): M-B
  • RR ABS wheel-speed sensor (-): J-A
  • LR ABS wheel-speed sensor (+): L-B
  • LR ABS wheel-speed sensor(-): I-A

If there is a common connector: 
  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
  • Repair or replace the malfunctioning part.

If there is no common connector: 


  • Repair or replace the wiring harness which has an open circuit.

Go to the Step 5.
4 INSPECT ABS WHEEL-SPEED SENSOR WIRING HARNESS FOR SHORT TO POWER SUPPLY 
  • Inspect for voltage between the following DSC HU/CM connector terminals (vehicle harness-side) and body ground:
    • RF ABS wheel-speed sensor(+): R
    • RF ABS wheel-speed sensor(-): O
    • LF ABS wheel-speed sensor(+): S
    • LF ABS wheel-speed sensor(-): P
    • RR ABS wheel-speed sensor(+): M
    • RR ABS wheel-speed sensor(-): J
    • LR ABS wheel-speed sensor(+): L
    • LR ABS wheel-speed sensor(-): I
  • Is the voltage 1 V or less?
Yes Go to the next step.
No Refer to the wiring diagram and verify whether or not there is a common connector between the DSC HU/CM connector terminals (vehicle harness-side) and the following vehicle harness-side connector terminals of the ABS wheel-speed sensors:
  • RF ABS wheel-speed sensor (+): R-B
  • RF ABS wheel-speed sensor(-): O-A
  • LF ABS wheel-speed sensor (+): S-B
  • LF ABS wheel-speed sensor(-): P-A
  • RR ABS wheel-speed sensor (+): M-B
  • RR ABS wheel-speed sensor (-): J-A
  • LR ABS wheel-speed sensor (+): L-B
  • LR ABS wheel-speed sensor(-): I-A

If there is a common connector: 
  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
  • Repair or replace the malfunctioning part.

If there is no common connector: 

  • Repair or replace the wiring harness which has a short to power supply.

Go to the next step.
5 VERIFY DTC TROUBLESHOOTING COMPLETED 
Yes Repeat the inspection from Step1.
If the malfunction recurs, replace the DSC HU/CM, then go to the next step.
(See DSC HU/CM REMOVAL/INSTALLATION .)
No Go to the next step.
6 VERIFY NO DTC IS PRESENT 
  • Are any DTCs present?
Yes Go to the applicable DTC inspection.
(See DTC TABLE [DYNAMIC STABILITY CONTROL (DSC)] .)
No DTC troubleshooting completed.