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Home >> Cadillac >> 2017 >> CTS Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 240 (Shift Lock Control System) >> Diagnostic Information and Procedures >> Transmission Control Lever Malfunction >> Component Testing
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Component Testing

WARNING: This page is about a different car, the 2016 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the S3 Transmission Shift Lever.
  2. Install a 3 A fused jumper wire between the control terminal 4 and 12 V. Momentarily install a jumper wire between the ground terminal 2 and ground.
  3. Verify the M7 Transmission Shift Lock Control Solenoid Actuator turns on & off/clicks, etc.
    • If the M7 Transmission Shift Lock Control Solenoid Actuator does not turn on & off/clicks, etc. 

      Replace the S3 Transmission Shift Lever.

    • If the M7 Transmission Shift Lock Control Solenoid Actuator does turn on & off/clicks, etc. 
  4. All OK
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