• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
B+ | 1 | 1 | -- | -- |
Cruise Control Indicator Low Reference | -- | 2 | -- | -- |
1. Cruise Control Malfunction 2. Cruise Control Indicator Malfunction |
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. Pressing the switch again opens the switch and the lamp turns OFF. The body control module (BCM) monitors the cruise control indicator switch.
Cruise Control Description and Operation
Control Module References for scan tool information
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. |
Important: Refer to DTC B3794 before performing this diagnostic, if this code is set as current or history.
⇒ | If the test lamp does not illuminate, test the low reference circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM. |
⇒ | If not within the specified resistance range, replace the steering wheel controls switch - left. |
Function Switch | Minimum Resistance Value | Maximum Resistance Value |
---|---|---|
Off | O.L. | O.L. |
On | 6.5k Ohms | 7.1k Ohms |
- SET | 2.2k Ohms | 2.4k Ohms |
+ RES | 3.7k Ohms | 3.9k Ohms |
Cancel | 1.4k Ohms | 1.6k Ohms |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for BCM replacement, setup, and programming |