Subject: | No Crank/ Start and Security Indicator On Intermittently (DTC U0168) |
Models: | 2006- 2007 Cadillac DTS |
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
A customer may comment the vehicle will not crank over and start intermittently, or that the security indicator illuminates in the instrument panel cluster. DTC U0168 Lost Communication With Vehicle Theft Deterrent (VTD) Control Module will be stored. The scan tool will not communicate with the theft deterrent module (TDM) if the condition is current. The cause may be poor connections in S204 (1) resulting in the TDM losing ground on circuit 350.
Inspect S204 for poor connections. Repair the splice if necessary using procedures found in Power and Signal Distribution, Wiring Systems and Power Management, Diagnostic Information and Procedures.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.