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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 PERFORM INSTRUMENT CLUSTER DTC INSPECTION Yes Go to applicable DTC inspection.
(See DTC TABLE [INSTRUMENT CLUSTER] .)
No Go to the next step.
2 INSPECT DSC OFF SWITCH SIGNAL CIRCUIT FOR SHORT TO GROUND
  • Disconnect the DSC OFF switch.
  • Disconnect the instrument cluster connector.
  • Inspect for continuity between the DSC OFF switch connector terminal B (vehicle harness-side) and body ground.
  • Is there continuity?
 Yes Refer to the wiring diagram and verify whether or not there is a common connector between the DSC OFF switch connector terminal B (vehicle harness-side) and instrument cluster connector terminal V (vehicle harness-side). 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 Go to the next step.
3 INSPECT DSC OFF SWITCH SIGNAL CIRCUIT FOR OPEN CIRCUIT
  • Inspect for continuity between the DSC OFF switch connector terminal C (vehicle harness-side) and body ground.
  • 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 OFF switch connector terminal C (vehicle harness-side) and body ground. 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 Step 5.
4 INSPECT DSC OFF SWITCH Yes Go to the next step.
No Replace the DSC OFF switch, then go to the next step.
(See DSC OFF SWITCH REMOVAL/INSTALLATION .)
5 VERIFY THAT THE SAME DTC IS NOT PRESENT Yes Repeat the inspection from Step 1.
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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