Initial Inspection and Diagnostic Overview

Steering Column Switches

Special Tool(s):

Special Tool(s)

Inspection and Verification
1. Verify the customer concern by operating the multifunction switch or ignition switch.
2. Visually inspect for obvious signs of mechanical and electrical damage.
The ignition switch is mounted below the steering column and is activated using the ignition key and rotating the ignition switch lock cylinder on the steering column.

If equipped with manual transmission, the key release button prevents rotation of the ignition switch lock cylinder to LOCK or ACC positions unless the key release button is depressed.

Visual Inspection Chart:

Visual Inspection Chart

3. For Motorhome, proceed to the Symptom Chart to continue diagnostics. For all vehicles except Motorhome, if the concern remains after the inspection, connect the scan tool to the Data Link Connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the scan tool menu. If the scan tool does not communicate with the vehicle:
- check that the program card is correctly installed.
- check the connections to the vehicle.
- check the ignition switch position.
4. If the scan tool still does not communicate with the vehicle, refer to the scan tool manual.
5. Perform the DATA LINK DIAGNOSTIC TEST using the scan tool. If the scan tool responds with:
- CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to Module Communications Network.
- NO RESP/NOT EQUIP for GEM, go to Pinpoint Test A. Test A: No Communication With the Generic Electronic Module (GEM)
- SYSTEM PASSED, retrieve and record the continuous Diagnostic Trouble Codes (DTCs), erase the continuous DTCs and perform self-test diagnostics for the GEM.
6. If the DTCs retrieved are related to the concern, go to GEM Diagnostic Trouble Code (DTC) Index to continue diagnostics. GEM Diagnostic Trouble Code (DTC) Index
7. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics. Symptom Related Diagnostic Procedures