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Home >> Chevrolet >> 2004 >> Impala LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 1148 (Cruise Control System) >> Diagnostic Information and Procedures >> Cruise Control Malfunction >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2012 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the steering wheel controls switch - left.
  2. Ignition OFF, test for less than 10 ohms between the ground circuit terminal 7 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, test for B+ between the B+ circuit terminal 4 and ground.
    • If less than the specified value, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
  4. Test for B+ between the B+ circuit terminal 4 and the signal circuit terminal 5.
    • If less than the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
  5. Ignition OFF, disconnect the X2 harness connector at the BCM.
  6. Test for infinite resistance between the signal circuit terminal 61 and ground.
    • If less than the specified value, test the signal circuit for a short to ground.
  7. If all circuits test normal, test or replace the steering wheel controls switch - left.
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