Circuit Description
WARNING: This page is about a different variant/trim than selected.
The powertrain control module (PCM) uses the 5-volt reference circuit as a sensor feed to the following sensors:
- The air conditioning (A/C) pressure sensor
- The throttle position (TP) sensor 1
- The accelerator pedal position (APP) sensor 2
- The fuel tank pressure (FTP) sensor
The PCM monitors the voltage on the 5-volt reference circuit. If the voltage is out of tolerance, the PCM will set DTC P0641.