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Home >> Pontiac >> 2008 >> Torrent Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Memory Modules >> Configurable Customer Control System >> Diagnostic Information and Procedures >> Steering Wheel Controls Inoperative (Equinox) >> Circuit/System Testing

Circuit/System Testing

CAUTION: Refer to SIR Caution .
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 X1 harness connector at the BCM.
  6. Test for infinite resistance between the signal circuit terminal 6 and ground.
    • If not the specified value, test the signal circuit for a short to ground.
  7. If all circuits test normal, test or replace switch.
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