LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2007 >> Allure CXS >> Repair and Diagnosis >> Accessories & Equipment >> Memory Modules >> Configurable Customer Control System >> Diagnostic Information and Procedures >> Steering Wheel Controls Inoperative (Mute) >> Circuit/System Testing

Circuit/System Testing

Note: It is Recommend that Component Testing is performed before Circuit Testing when diagnosing steering wheel controls.

CAUTION: Refer to SIR Caution .
  1. Ignition OFF, disconnect the harness connector at the MUTE switch.
  2. Ignition ON, test for 10-12 volts between the ignition 1 voltage circuit and ground at the switch harness connector.
    • If less than 10 volts, test the voltage circuit for short to ground or open/high resistance. If circuit test normal and the fuse is open, test the signal circuit for a short to ground.
  3. Connect test lamp between the signal circuit and ground at the harness connector. Verify test lamp does not illuminate.
    • If test lamp illuminates, test the signal circuit for short to voltage. If circuit test normal, replace BCM.
  4. Test for 10-12 volts between the voltage circuit and the signal circuit at the harness connector.
    • If less than 10 volts, test the signal circuit for an open/high resistance. If the circuit test normal and the fuse is open, test the signal circuit for a short to ground.
  5. If all circuits test normal, refer to component testing.
scientia non olet · About LEMON Manuals