Circuit/System Testing

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

1. Ignition ON, with a scan tool observe the Cruise On/Off Switch parameter. Verify the parameter changes each time the switch is actuated
   • If the parameter reads ON at all times replace the cruise control switch.
2. Ignition OFF, remove the inflatable restraint steering wheel module. Refer to Inflatable Restraint Steering Wheel Module Replacement .
3. Disconnect the harness connector at the cruise control switch assembly.
4. Ignition ON, test for 0 volts between the cruise control harness connector terminal 9 and ground.
   • If voltage is present, test the circuit for a short to voltage.
5. Ignition OFF, disconnect the X3 connector at the BCM.
6. Test for less than 1.0 ohm between the cruise control harness connector terminal 9 and the BCM connector X3 terminal 22.
   • If greater than the specified value, test the circuit for an open or high resistance.
7. Test for infinite resistance between the cruise control harness connector terminal 9 and ground.
   • If resistance is measured, test the circuit for a short to ground.
8. If all circuits test normal, test the component. If the circuits and component tests are normal, replace the BCM.