B1504

B1504-2A-LEFT STEERING WHEEL CONTROL SWITCH - STUCK

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The Left Steering Wheel Control Switch is hardwired to the Right Steering Wheel Control Switch (Speed Control Switch). The Right Steering Wheel Control Switch (Speed Control Switch) communicates to the Steering Column Control Module (SCCM) via the LIN Bus. The SCCM is located near the top of the steering column below the steering wheel. The SCCM includes the steering column shroud, the Steering Angle Sensor (SAS), the Clockspring, the Multifunction Switch, a Steering Column Power Tilt and Telescope Switch (if equipped), and a trim cover. The SCCM is replaced as an entire assembly.

- When Monitored:
Continuously with the ignition on.

- Set Condition:
The Steering Column Control Module (SCCM) senses that the Left Steering Wheel Control Switch is in the Set position for greater than 20 seconds. Phone related switches have a set time of 600 seconds.





CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. Press each switch on the Left Steering Wheel Switch assembly twice.
3. With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

- WARNING: Turn the ignition off disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
WARNING: Do not place an intact non-deployed airbag face down on a hard surface, the airbag propels into the air if accidentally deployed. Failure to follow these instructions may result in possible serious or fatal injury.
NOTE: Check for a stuck Left Steering Wheel Control Switch.
NOTE: Visually and physically inspect the wiring harness between the Left Steering Wheel Control Switch harness connector and the Right Steering Wheel Control Switch (Speed Control Switch) harness connector. Repair any damaged wires, connectors, and open/spread terminals. If harness is OK, proceed with test.

- Replace the Left Steering Wheel Control Switch. Electronic Vehicle Information Center Switch - Removal. Once switch has been replaced, press it twice to initialize it. If problem persists, replace the Right Steering Wheel Switch (Speed Control Switch). Speed Control Switch - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.