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Accelerator Pedal Position Sensor Circuit
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 131 PID: P091 SPN: 91 FMI: 3/3 LAMP: Red SRT: |
Accelerator Pedal Position Sensor Circuit – shorted high. High signal voltage detected at accelerator pedal position circuit. |
Severe derate in power output of the engine. Limp home power only. |
 Accelerator Pedal Position Sensor Circuit
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Circuit Description
The accelerator pedal position sensor is attached to the accelerator pedal. The accelerator pedal position sensor sends a signal to the electronic control module (ECM) when the accelerator pedal is depressed and released. The accelerator pedal position circuit contains three wires: Accelerator Pedal Position +5 Volt Supply, Accelerator Pedal Position Return, and Accelerator Pedal Position Signal.
Component Location
The accelerator pedal position sensor is located on the accelerator pedal.
Shop Talk
If troubleshooting an intermittent accelerator problem:
The accelerator pedal position sensor signal voltage can be monitored with the INSITE™ electronic service tool, while flexing the harness to locate the intermittent connection.
Possible causes of this fault include:
- Accelerator pedal position signal circuit shorted to battery or +5 volt supply.
- Open accelerator pedal return circuit in the harness or connections.
Refer to Troubleshooting Fault Code t05-131
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