P1299

Tests 507 - 512:

SYMPTOM
P-1299 VACUUM LEAK FOUND(IAC FULLY SEATED)

WHEN MONITORED
With the engine running and brake ON.

SET CONDITION
The MAP sensor signal does not correlate to the TP sensor signal.

POSSIBLE CAUSES
- MAP sensor not within 1" of ind vacuum gauge
- TPS voltage above 1.5 volts with throttle closed
- TPS voltage below 3.4 volts at wide open throttle
- PCM defective (5-volt supply)
- Intake manifold large vacuum leak
- Intake manifold vacuum leak