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Home >> Chevrolet >> 2021 >> Traverse L >> Repair and Diagnosis >> External Pages >> Different car >> Section 68 (Driver Assistance Systems) >> Diagnostic Information and Procedures >> Side Blind Zone Alert System Malfunction >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2020 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

Test 1

  1. Ignition OFF, disconnect the X1 connector at the S79D Front Side Door Window Control Switch - Driver, ignition ON.
  2. Verify the P43D Side Object Detection Indicator - Driver is not illuminated.
    • If the P43D Side Object Detection Indicator - Driver is illuminated 

      Repair the short to voltage on circuit 1760.

    • Go to next step: If the P43D Side Object Detection Indicator - Driver is not illuminated 
  3. Connect a 3 A fused jumper wire between control terminal 8 and B+.
  4. Verify the P43D Side Object Detection Indicator - Driver is illuminated.
    • If the P43D Side Object Detection Indicator - Driver is not illuminated 
    1. Test circuit 2150 for an open/high resistance.
      • If an open/high resistance is found, repair the fault on the circuit or ground connection.
      • Go to next step: If an open/high resistance is not found
    2. Test circuit 1760 for a short to ground.
      • If a short to ground is found, repair the fault on the circuit.
      • Go to next step: If a short to ground is not found
    3. Test circuit 1760 for an open/high resistance.
      • If an open/high resistance is found, repair the fault on the circuit.
      • Go to next step: If an open/high resistance is not found
    4. Replace the E17D Outside Rearview Mirror Glass - Driver.
    • Go to next step: If the P43D Side Object Detection Indicator - Driver is illuminated 
  5. Replace the S79D Front Side Door Window Control Switch - Driver.

Test 2

  1. Ignition OFF, disconnect the X1 connector at the S79D Front Side Door Window Control Switch - Driver, ignition ON.
  2. Verify the P43D Side Object Detection Indicator - Driver is not illuminated.
    • If the P43D Side Object Detection Indicator - Driver is illuminated 

      Repair the short to voltage on circuit 1761.

    • Go to next step: If the P43D Side Object Detection Indicator - Driver is not illuminated 
  3. Connect a 3 A fused jumper wire between control terminal 8 and B+.
  4. Verify the P43D Side Object Detection Indicator - Driver is illuminated.
    • If the P43D Side Object Detection Indicator - Driver is not illuminated 
    1. Test circuit 2250 for an open/high resistance.
      • If an open/high resistance is found, repair the fault on the circuit or ground connection.
      • Go to next step: If an open/high resistance is not found
    2. Test circuit 1761 for a short to ground.
      • If a short to ground is found, repair the fault on the circuit.
      • Go to next step: If a short to ground is not found
    3. Test circuit 1761 for an open/high resistance.
      • If an open/high resistance is found, repair the fault on the circuit.
      • Go to next step: If an open/high resistance is not found
    4. Replace the E17D Outside Rearview Mirror Glass - Driver.
    • Go to next step: If the P43D Side Object Detection Indicator - Driver is illuminated 
  5. Replace the S79D Front Side Door Window Control Switch - Driver.
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