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HOMESERVICE MANUALSPONTIAC2008GRAND PRIX BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 281 (SECONDARY AND CONFIGURABLE CUSTOMER CONTROLS)DIAGNOSTIC INFORMATION AND PROCEDURESSTEERING WHEEL CONTROLS INOPERATIVECIRCUIT/SYSTEM TESTING
2008 Pontiac Grand Prix Base

Circuit/System Testing

2008 Pontiac Grand Prix BaseSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2008 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: It is recommended that component testing is performed before circuit testing when diagnosing steering wheel controls.
  1. Ignition OFF, disconnect the harness connector at the right steering wheel control switch.
  2. Ignition ON, test for ignition voltage between the ignition circuit terminal 3 and ground.
    • If less than specified value, test the ignition circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the BCM.
  3. Test for the 0 volts between the signal circuit terminal 4 and ground.
    • If greater than specified value, test the signal circuit for a short to voltage. If the circuit tests normal, replace the BCM.
  4. Test for ignition voltage between the ignition circuit terminal 3 and the signal circuit terminal 4.
    • If less than specified value, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the BCM.
  5. Ignition OFF, disconnect the harness connector X1 at the BCM.
  6. Test for infinite resistance between the signal circuit terminal 6 and ground.
    • If less than specified value, test the signal circuit for a short to ground.
  7. If all circuits test normal, test or replace switch.
RENDER: 1.0x

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