Note. For circuit reference, see the appropriate WIRING DIAGRAMS article. For connector and terminal identification, see CONNECTOR IDENTIFICATION .
Circuit Description
PCM uses 5-volt reference "A" circuit as a sensor feed for EGR valve pintle position, MAP, and TP sensors. PCM monitors voltage on this circuit. If PCM senses voltage out of tolerance, DTC P1635 sets.
Conditions required to set DTC are
- PCM detects an out of tolerance condition on the 5-volt reference "A".
- Condition is present longer than 10 seconds.