Normal Operation
The Passive Anti-Theft System (PATS) uses a visual anti-theft indicator located in the Instrument Cluster (IC). This indicator proves out for 3 seconds when the key is turned to the ON or START position under normal operation. If there is a PATS concern, this indicator either flashes rapidly or glows steadily (for more than 3 seconds) when the key is turned to the ON or START position and PATS DTCs should be set in the IC . PATS also flashes the anti-theft indicator every 2 seconds at key off to act as a visual theft deterrent. The anti-theft indicator operation is controlled by the IC . If the anti-theft indicator is off and the vehicle starter does not engage, or clicks, or engages slowly, or it engages and the engine cranks over, but does not start; it is not a PATS issue. The starting concern may be due to either a starter concern, battery/cable concern or a driveability concern.
This pinpoint test is intended to diagnose the following:
- Starting system concern
- PATS concern
- Driveability concern