Cruise Control Indicator Malfunction (Switch Indicator Malfunction)

Cruise Control Indicator Malfunction (Switch Indicator Malfunction)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Diagnostic Fault Information






Circuit/System Description

The cruise control switch contains an LED that illuminates to indicate the cruise control system has been switched ON. Voltage is applied through the ON/OFF switch to the LED when the switch is pressed. The BCM provides the ground path for the LED through a dedicated control circuit. Pressing the switch again opens the switch and the lamp turns OFF.

Circuit/System Verification

Ignition ON, observe the scan tool Cruise Control Switch parameter. Verify the parameter changes each time the switch is pressed.

If the parameter does not change, refer to Cruise Control Malfunction. Cruise Control Malfunction

Circuit/System Testing

1. Disconnect the harness connector at the steering wheel control switch-left.
2. Ignition ON, test for less than 1 volt between the control circuit terminal 9 and ground.

• If greater than the specified range, test the control circuit for a short to voltage.

3. Ignition OFF, disconnect the X3 harness connector at the BCM.
4. Test for infinite resistance between the control circuit terminal 9 and ground.

• If not the specified value, test the control circuit for a short to ground.

5. Test for less than 1.0 ohm between the control circuit terminal 9 and the BCM terminal 22 X3.

• If greater than the specified range, test the control circuit for an open/high resistance.

6. If all circuits test normal, test or replace the steering wheel control switch-left. If the indicator remains inoperative, replace the BCM.

Component Testing

1. Disconnect the harness connector at the steering wheel control switch-left.
2. Cruise control switch ON, connect a DMM positive lead to terminal 1 and the negative lead to terminal 9 of the cruise control switch. Verify the meter reading indicates continuity.

• If the reading indicates an open circuit, replace the steering wheel control switch-left.

3. Connect the DMM positive lead to terminal 9 and the negative lead to terminal 1 of the cruise control switch. Verify the meter reading indicates an open circuit.

• If not the specified value, replace the steering wheel control switch-left.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

* Steering Wheel Control Switch Assembly Replacement