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Home >> Chevrolet >> 2012 >> Cruze LS, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 240 (Cruise Control System) >> Diagnostic Information and Procedures >> DTC B3794: Cruise Control Function Request Circuit >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2011 Chevrolet Cruze. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the K20 steering wheel control switch-left.
  2. Ignition ON, test for B+ between the voltage reference circuit and ground.
    • If less than the specified value, test the voltage reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
  3. Test for B+ between the voltage reference circuit and the signal circuit.
    • 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.
  4. Ignition OFF, disconnect the X3 harness connector at the K9 BCM.
  5. Test for infinite resistance between the signal circuit terminal 9 and ground.
    • If less than the specified value, test the signal circuit for a short to ground.
  6. If all circuits test normal, test or replace the K20 steering wheel control switch-left.
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