P0807
DTC P0807 or 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 P0807
-
Clutch Pedal Position (CPP) Sensor Circuit Low Voltage
DTC P0808
-
Clutch Pedal Position (CPP) Sensor Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Operating Conditions:CPP Sensor Voltage Parameter Normal Range:
Circuit/System Description
The clutch pedal position (CPP) sensor is a three wire sensor, connected to a 5V reference circuit, a low reference circuit, and a signal circuit. The engine control module (ECM) supplies 5 V 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 V when the clutch pedal is released, to a voltage less than or equal to 1.5 V when the clutch pedal is applied.
Conditions for Running the DTC
P0807 and P0808
* DTCs P0641 or P0651 are not set.
* The system voltage is more than 9 V.
* The ignition is in the RUN position.
Conditions for Setting the DTC
P0807
The CPP sensor voltage is less than 0.1 V for more than 1 s.
P0808
The CPP sensor voltage is more than 5.2 V for more than 1 s.
Action Taken When the DTC Sets
DTCs P0807 and P0808 are Type A DTCs.
Conditions for Clearing the DTC
DTCs P0807 and P0808 are Type A DTCs.
Reference Information
Schematic Reference
Manual Transmission Schematics M20/M32 - Manual Transmission
Connector End View Reference
Component Connector End Views Sunshade - Left (DH6)
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
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Engine Control Module Scan Tool Information (LFX or LFW) Engine Control Module Scan Tool Information (LFX or LFW)Engine Control Module Scan Tool Information (LE9) Engine Control Module Scan Tool Information (LE9)
Circuit/System Verification
1. If DTC P0335, P0336, P0607, P0641, P0651 or P080A is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.
2. Ignition ON, observe the scan tool CPP Sensor percent parameter. The percentage should vary from 0% when the clutch pedal is released, to 100% when the clutch pedal is in the apply position.
3. Perform the CPP learn procedure. Refer to Clutch Pedal Position Sensor Learn Testing and Inspection.
4. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector of the B25B Clutch Pedal Position Sensor.
2. Ignition OFF, test for less than 1 ohms between the low reference circuit terminal C and ground.
• If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
3. Ignition ON, test for 4.8-5.2 V between the 5V reference circuit terminal A and ground.
• If less than the specified range, test the 5V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
• If greater than the specified range, test the 5V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.
4. Ignition ON, observe the scan tool CPP sensor voltage parameter for less than 0.1 V.
• If greater than the specified value, test the signal circuit for a short to voltage. If the circuit test normal, replace the K20 Engine Control Module.
5. Install a 3 A fused jumper wire between the signal circuit terminal B and the 5V reference circuit terminal A. Verify that the scan tool CPP sensor parameter is between 4.8-5.2 V.
• If not within the specified range, test the signal circuit for or a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
6. If all circuits test normal, test or replace the B25B Clutch Pedal Position Sensor.
Component Testing
Static Test
1. Ignition OFF, disconnect the harness connector of the B25B Clutch Pedal Position Sensor.
2. Measure the resistance between the signal terminal B and the low reference terminal C of the B25B Clutch Pedal Position Sensor. Depress the clutch pedal through the entire range. The resistance should vary from high to low and vice versa without any spikes or dropouts.
• If the resistance is erratic with spikes or dropouts, replace the B25B Clutch Pedal Position Sensor.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
Control Module References Control Module References