2004-2005 Pontiac GTO Vehicle Theft Deterrent - GTO Communication Diagnostics - keywords accessories antenna battery crank DIC door DTC electrical IPC keyless lock performance power radio RKE
| Subject: | 2004-2005 Pontiac GTO Vehicle Theft Deterrent - GTO Communication Diagnostics |
| Models: |
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in the PI.
Condition/Concern:
The GTO has a vehicle theft deterrent system which is unique to this vehicle. In diagnosing this system, we have found that there are common symptoms which will shorten the time spent attempting to resolve a concern with this system.
Recommendation/Instructions:
VTD diagnostic:
The vehicle will momentarily start and stall even if wrong security code is received. This is a result of it taking a full second for the information from the Key FOB to travel from the ignition contacts to the PCM and back. The security light will give you a clue as to where the breakdown in communication may have occurred if the vehicle will not stay running.
After having attempted to start the vehicle and the engine has started and stalled, these symptoms maybe helpful in diagnosis:
| • | If the security light is flashing fast with the key in the on position, the concern is between the FOB and the BCM. |
| • | If the security light is not on with the key in the on position, the concern is between the BCM and the PIM. |
| • | If the engine starts and stalls after waiting one second or longer in the on/run position, the concern is between the PIM and the PCM. |
Please follow this diagnosis 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.
Models:
(2004-2005 Pontiac GTO)
