Circuit Description

The Engine Control Module (ECM) provides 5 V to the following sensors through the 5 Volt Reference 1 Circuit:

• Throttle Position (TP) sensor 1, 2
• Accelerator Pedal Position (APP) sensor 1

A circuit condition on one sensor 5 volt reference circuit may affect the other sensor 5 volt reference circuits. The ECM monitors the voltage on the 5 volt reference circuit. If the ECM detects that the voltage is out of tolerance, a DTC sets.