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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 149 (On-Board Diagnostic - Dynamic Stability Control (DSC)) >> DTC C0031-11; C0031-15; C0034-11; C0034-15; C0037-11; C0037-15; C003A-11; C003A-15; Abs Wheel-Speed Sensors >> Diagnostic procedure

Diagnostic procedure

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 INSPECT ABS WHEEL-SPEED SENSOR FOR SHORT TO GROUND INSPECT ABS WHEEL-SPEED SENSOR FOR SHORT TO GROUND
  • Switch the ignition to off.
  • Disconnect the DSC HU/CM connectors.
  • Inspect for continuity between the following DSC HU/CM 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.
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 (+): 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 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 (+): F-B
  • RF ABS wheel-speed sensor (-): C-A
  • LF ABS wheel-speed sensor (+): AG-B
  • LF ABS wheel-speed sensor (-): AJ-A Without electric parking brake
  • 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 With electric parking brake
  • RR ABS wheel-speed sensor (+): AA-B
  • RR ABS wheel-speed sensor (-): X-D
  • LR ABS wheel-speed sensor (+): L-B
  • LR ABS wheel-speed sensor (-): O-D 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 connectors s (vehicle harness-side) and the following vehicle harness-side connector terminals of the ABS wheel-speed sensors:
    • RF ABS wheel-speed sensor (+): F-B
    • RF ABS wheel-speed sensor (-): C-A
    • LF ABS wheel-speed sensor (+): AG-B
      • LF ABS wheel-speed sensor (-): AJ-A

        Without electric parking brake

    • 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 With electric parking brake
    • RR ABS wheel-speed sensor (+): AA-B
    • RR ABS wheel-speed sensor (-): X-D
    • LR ABS wheel-speed sensor (+): L-B
      • LR ABS wheel-speed sensor (-): O-D
  • 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 (+): F-B
  • RF ABS wheel-speed sensor (-): C-A
  • LF ABS wheel-speed sensor (+): AG-B
  • LF ABS wheel-speed sensor (-): AJ-A Without electric parking brake
  • 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 With electric parking brake
  • RR ABS wheel-speed sensor (+): AA-B
  • RR ABS wheel-speed sensor (-): X-D
  • LR ABS wheel-speed sensor (+): L-B
  • LR ABS wheel-speed sensor (-): O-D 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 (+): 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.
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 (+): F-B
  • RF ABS wheel-speed sensor (-): C-A
  • LF ABS wheel-speed sensor (+): AG-B
  • LF ABS wheel-speed sensor (-): AJ-A Without electric parking brake
  • 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 With electric parking brake
  • RR ABS wheel-speed sensor (+): AA-B
  • RR ABS wheel-speed sensor (-): X-D
  • LR ABS wheel-speed sensor (+): L-B
  • LR ABS wheel-speed sensor (-): O-D 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 THAT THE SAME DTC IS NOT 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 .)
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)] .)
No DTC troubleshooting completed.
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