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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 135 (12 V Starting And Charging - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P3052, P3054, or P3056 >> Circuit/System Testing - Starter System Test

Circuit/System Testing - Starter System Test

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition On vehicle in service mode.
  2. Remove the Kr27 Starter Relay.
  3. Perform the scan tool control function: Command the Starter Pinion Solenoid On.
  4. Verify a test lamp does not turn On between the test points:

    M64 Starter Motor Terminal 1 X1 & Ground.

    • If the test lamp turns On 

      Repair the short to voltage on the circuit 6

    • Go to next step: If the test lamp does not turn On 
  5. Replace the M64 Starter Motor.
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