P0807
DTC P0806-P0808
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0806
- Clutch Pedal Position (CPP) Sensor Performance
DTC P0807
- Clutch Pedal Position (CPP) Sensor Circuit Low Voltage
DTC P0808
- Clutch Pedal Position (CPP) Sensor Circuit High Voltage
Diagnostic Fault Information
Circuit/System Description
The clutch pedal position (CPP) sensor is a three-wire sensor, connected to a 5-volt reference circuit, a low reference circuit, and a signal circuit. The engine control module (ECM) supplies 5 volts to the CPP sensor, and also provides a sensor ground path on the low reference circuit. The CPP sensor sends a voltage signal to the ECM on the signal circuit. The voltage on the signal circuit will vary from a voltage less than or equal to 5 volts when the clutch pedal is released, to a voltage less than or equal to 1.5 volts when the clutch pedal is applied.
Conditions for Running the DTC
System voltage is greater than 9 V.
Conditions for Setting the DTC
P0806
The ECM detects that the clutch pedal position (CPP) sensor is stuck in a range less than the learned released position when the clutch is determined to be released.
P0807
The ECM detects that the clutch pedal position (CPP) sensor voltage is less than 0.25 V.
P0808
The ECM detects that the clutch pedal position (CPP) sensor voltage is greater than 4.75 V.
Action Taken When the DTC Sets
DTC P0806 is type A DTC.
Conditions for Clearing the DTC
The current DTC will clear when the fault is no longer present.
Reference Information
Schematic Reference
Manual Transmission Schematics (D16 - Manual Transmission)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
Transmission System Description and Operation (Transmission System Description and Operation)
Electrical Information Reference
* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)
Scan Tool Reference
Control Module References (Programming and Relearning)
Circuit/System Verification
Ignition ON, observe the scan tool CPP Sensor parameter. The reading should be between 0.25 V and 4.75 V and change while the clutch pedal is pressed and released.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the clutch pedal position sensor.
2. Test for less than 2 Ohms between the low reference circuit terminal and ground.
• If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal and ground.
• If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
• If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the ECM.
4. Verify the scan tool CPP Sensor parameter is greater than 4.75 V.
• If less than the specified range, test the signal circuit terminal for a short to ground. If the circuit tests normal, replace the ECM.
5. Install a 3A fused jumper wire between the signal circuit terminal and the low reference circuit terminal. Verify the scan tool CPP Sensor parameter is less than.25 V.
• If greater than the specified range, test the signal circuit for short to voltage or an open/high resistance. If the circuit tests normal, replace the ECM.
6. If all circuits test normal, test or replace the clutch pedal position sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
Control Module References (Programming and Relearning) for ECM replacement, setup, and programming