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Home >> Chevrolet >> 2011 >> Caprice >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Memory Modules >> Secondary And Configurable Customer Control System >> Diagnostic Information and Procedures >> Steering Wheel Controls Malfunction >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the steering wheel switch assembly. It may take up to 2 minutes for all vehicle systems to power down.
  2. Test for less than 5 Ω between the low reference circuit terminal 5 and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the IPC.
  3. Ignition ON, test for 4.8-5.2 volts between the signal circuit terminal 6 and ground.
    • If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the IPC.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the IPC.
  4. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down.
  5. Test for less than 10 Ω between the steering wheel switch ground terminal 7 and ground.
    • If greater than the specified range, test the steering wheel switch ground for an open/high resistance. If the circuit tests normal, replace the steering wheel switch.
  6. Ignition ON, test for 4.8-5.2 volts between the signal circuit terminals listed below and ground.
    • Right Steering Wheel Scroll 2 terminal 1.
    • Right Steering Wheel Scroll 1 terminal 2.
    • Left Steering Wheel Scroll 1 terminal 3.
    • Left Steering Wheel Scroll 2 terminal 4.
    • If less than the specified range, test the appropriate signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the IPC.
    • If greater than the specified range, test the appropriate signal circuit for a short to voltage. If the circuit tests normal, replace the IPC.
  7. If all circuits test normal, replace the steering wheel control switch assembly.
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