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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 298 (Wiper System And Washer System) >> Diagnostic Information and Procedures >> DTC B1176 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF and all vehicle systems OFF, disconnect the connector at the M75 Windshield Wiper Motor. It may take up to 2 min for all vehicle systems to power down.
  2. Disconnect the X5 connector at the K219 Exterior Lighting Control Module. Ignition ON.
  3. With the S82 Windshield Wiper/Washer Switch in the off position, test for less than 1 V between signal circuit terminal 11 and ground.
    • If greater than 1 V 
    1. Test circuit 1715 for a short to voltage.
      • If a short to voltage is found, repair the fault on the circuit.
      • Go to next step: If a short to voltage is not found.
    2. Replace the S82 Windshield Wiper/Washer Switch.
    • Go to next step: If less than 1 V 
  4. Ignition OFF, S82 Windshield Wiper/Washer Switch in the OFF position.
  5. Test for infinite resistance between signal circuit terminal 11 and ground.
    • If less than infinite resistance 
    1. Test circuit 1715 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.
    2. Replace the S82 Windshield Wiper/Washer Switch.
    • Go to next step: If infinite resistance 
  6. Operate the S82 Windshield Wiper/Washer Switch to the high speed position.
  7. Test for less than infinite resistance between signal circuit terminal 11 and ground.
    • If infinite resistance 
    1. Test circuit 1715 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.
    2. Replace the S82 Windshield Wiper/Washer Switch.
    • Go to next step: If less than infinite resistance 
  8. Connect the X5 connector at the K219 Exterior Lighting Control Module.
  9. Ignition ON. Operate the vehicle under the Conditions for Setting the DTC.
  10. Verify DTC B1176 does not set.
    • If the DTC sets 

      Replace the K219 Exterior Lighting Control Module

    • Go to next step: If the DTC does not set 
  11. Connect the M75 Windshield Wiper Motor. Operate the vehicle under the Conditions for Setting the DTC.
  12. Verify DTC B1176 does not set.
    • If the DTC sets 

      Replace the M75 Windshield Wiper Motor

    • Go to next step: If the DTC does not set 
  13. A fault is not currently present and may be an intermittent condition.
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