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Home >> Mazda >> 2021 >> CX-3 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Symptom Troubleshooting - Security And Locks) >> Steering Lock Function Does Not Operate [Security And Locks] >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.
Step Inspection Action
1 VERIFY STEERING WHEEL CONDITION 
  • Operate the steering lock function with no load applied to the steering wheel.
  • Does the steering lock function operate normally?
 Yes System is normal. (Explain the operation conditions to the customer.)
No Go to the next step.
2 INSPECT IF MALFUNCTION CAUSE IS OPEN CIRCUIT IN WIRING HARNESS BETWEEN START STOP UNIT AND DOOR LOCK LINK SWITCH (DRIVER-SIDE) 
  • Disconnect the negative battery cable.

    (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)

  • Disconnect the start stop unit and front door latch and lock actuator connector.
  • Inspect for continuity between the following terminals (vehicle wiring harness).
    • Start stop unit terminal 1P and front door lock link switch terminal J
  • Is there continuity?
 Yes Go to the next step.
No
  • Repair or replace the wiring harness for an open circuit.
  • After repair procedure, go to Step 5.
3 INSPECT IF MALFUNCTION CAUSE IS SHORT TO GROUND IN WIRING HARNESS BETWEEN START STOP UNIT AND DOOR LOCK LINK SWITCH (DRIVER-SIDE) 
  • Verify that the start stop unit connector is disconnected.
  • Inspect for continuity between the following wiring harness terminals (vehicle wiring harness side) and body ground.
    • Start stop unit terminal 1P and ground
  • Is there continuity?
 Yes Go to the next step.
No
  • Repair or replace the wiring harness for an open circuit.
  • After repair procedure, go to Step 5.
4 INSPECT IF MALFUNCTION CAUSE IS OPEN CIRCUIT IN WIRING HARNESS BETWEEN START STOP UNIT AND GROUND 
  • Verify that the start stop unit connector is disconnected.
  • Inspect for continuity between the following terminals (vehicle wiring harness).
    • Start stop unit terminal 1AF and ground
    • Start stop unit terminal 2B and ground
  • Is there continuity?
 Yes Go to the next step.
No
  • Repair or replace the wiring harness for an open circuit.
  • After repair, go to the next step.
5 VERIFY IF MALFUNCTION CAUSE WAS CORRECTED 
  • Is the steering lock operation normal?
 Yes Troubleshooting completed. (Explain the contents of the servicing to the customer.)
No If the malfunction has not been resolved, repeat the inspection from Step 1.
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