Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Chevrolet >> 2013 >> Impala LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 388 (Cruise Control System) >> Diagnostic Information and Procedures >> DTC B3794 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Refer to SIR Caution .

Disable the inflatable restraint steering wheel module when performing this diagnostic. Refer to SIR Disabling and Enabling .

  1. Ignition OFF, remove the inflatable restraint steering wheel module. Refer to Inflatable Restraint Steering Wheel Module Replacement .
  2. Disconnect the harness connector of the cruise control switch.
  3. Ignition ON, measure for 10 volts or greater at the steering wheel control supply voltage circuit.
    • If less than 10 volts, check for an open/high resistance or for a short to ground on the cruise control supply voltage circuit.
  4. Test for 0 volts at the cruise control switch connector terminal 3.
    • If voltage is present, test cruise control switch signal circuit for a short to voltage.
  5. Ignition OFF, disconnect the BCM X1 connector. Test for 0 ohms resistance between BCM connector X1 terminal 3 and the cruise control switch connector terminal 3.
    • If greater than the specified value, test the cruise control switch signal circuit for an open or high resistance.
  6. Test for infinite resistance between the cruise control switch connector terminal 3 and ground.
    • If any resistance is measured, test the cruise control switch signal circuit for a short to ground.
  7. If all circuits test normal, test the component. If the circuit and the component tests are normal, replace the BCM.
scientia non olet · About Mike's Workshop Manuals