P0698

DTC P0698: 5 Volt Reference 3 Circuit Low Voltage

Circuit Description
The Engine Control Module (ECM) provides 5 V to the following sensors through the 5 volt reference 3 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.

Conditions for Setting the DTC
- Ignition ON.
- The 5 volt reference 3 voltage is less than 4.8 V for a certain period of time.

Action Taken When the DTC Sets
- The Malfunction Indicator Lamp (MIL) will illuminate.
- The ECM will record operating conditions at the time the diagnostic fails. This information will be stored in the Freeze Frame and Failure Records buffers.
- A history DTC is stored.

Conditions for Clearing the MIL/DTC
- The MIL will turn OFF at the end of a consecutive validation cycle in which the diagnostic runs without a fault.
- A history DTC will clear after 40 warm up cycles without a fault.
- DTC(s) can be cleared by using the scan tool.

Diagnostic Aids
For an intermittent condition, refer to Intermittents. Intermittents

Step 1 - 4:

Step 5 - 10:

DTC Troubleshooting