FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.
Home >> Buick >> 2013 >> Regal L4-2.0L Turbo >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> P Code Charts >> P0807

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






Typical Scan Tool Data










Circuit/System Description

The clutch pedal position (CPP) sensor is a three wire sensor, connected to a 5 V reference circuit, a low reference circuit, and a signal circuit. The engine control module 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

P0806, P0807 and P0808

* DTCs P0642, P0643, P0335, P0336, P0607 or P080A are not set.

* The system voltage is more than 9 V.

* The ignition is in the RUN position.

Conditions for Setting the DTC

P0806

The CPP sensor is stuck in range.

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

DTC P0806 - P0808 are Type A DTCs.

Conditions for Clearing the DTC

DTC P0806 - P0808 are Type A DTCs.

Reference Information

Schematic Reference

Manual Transmission Schematics Electrical Diagrams

Connector End View Reference

Component Connector End Views Sunshade - Left

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 (LUK) Scan Tool Testing and ProceduresEngine Control Module Scan Tool Information (LEA) Scan Tool Testing and ProceduresEngine Control Module Scan Tool Information (LHU) Scan Tool Testing and Procedures for scan tool information

Circuit/System Verification

1. If DTC P0642, P0643, P0335, P0336, P0607 or P080A is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.

2. Ignition ON.

3. 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.

• If the percentage does not vary
Refer to Circuit/System Testing.

• If the percentage varies

4. Perform the CPP learn procedure.

5. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

• If the DTC resets
Refer to Circuit/System Testing.

• If the DTC does not reset

6. All OK.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector of the B25B Clutch Pedal Position Sensor.

2. Test for less than 5 ohms between the low reference circuit terminal C and ground:

• If 5 ohms or greater

1. Disconnect the X1 harness connector at the K20 Engine Control Module.

2. Test for less than 2 ohms in the circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, replace the K20 Engine Control Module.

• If less than 5 ohms

3. Ignition ON.

4. Test for greater than 4.8-5.2 V between the 5 V reference circuit terminal A and ground:

• If less than 4.8 V

1. Test for infinite resistance between the 5 V reference circuit and ground.

• If less than infinite resistance
Repair the short to ground on the circuit.

• If infinite resistance

1. Disconnect the X1 harness connector at the K20 Engine Control Module.

2. Test for less than 2 ohms in the 5 V reference circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, replace the K20 Engine Control Module.

• If greater than 5.2 V

1. Disconnect the X1 harness connector at the K20 Engine Control Module.

2. Test for less than 0.3 V between the 5 V reference circuit terminal 47 and ground.

• If 0.3 V or greater, repair the short to voltage on the circuit.

• If less than 0.3 V, replace the K20 Engine Control Module.

• If between 4.8-5.2 V

5. Ignition OFF.

6. Test for less than 1 V between the signal circuit terminal B and ground.

• If 1 V or greater

1. Disconnect the X1 harness connector at the K20 Engine Control Module.

2. Test for less then 0.3 V between the signal circuit terminal 48 and ground.

• If 0.3 V or greater, repair the short to voltage on the circuit.

• If less than 0.3 V, replace the K20 Engine Control Module.

• If less than 1 V

7. Ignition OFF, disconnect the X1 harness connector at the K20 Engine Control Module.

8. Test for less than 2 ohms between the signal circuit terminal 48 at the K20 Engine Control Module and the signal circuit terminal B at the B25B Clutch Pedal Position Sensor.

• If 2 ohms or greater
Repair the open/high resistance in the circuit.

• If less than 2 ohms

9. Test for infinite resistance between the signal circuit terminal B at the B25B Clutch Pedal Position Sensor.

• If less than infinite resistance
Repair the short to ground on the circuit.

• If infinite resistance

10. 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 at the B25B Clutch Pedal Position Sensor. Depress the clutch pedal through the entire range. The resistance should vary from low to high and vice versa without any spikes or dropouts.

• If the resistance is erratic with spikes or dropouts
Replace the B25B Clutch Pedal Position Sensor.

• If the resistance is not erratic without spikes or dropouts

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

* Clutch Pedal Position Sensor Replacement Service and Repair

* Control Module References Control Module References for ECM replacement, programming and setup.

pro multis Credits:Operation CHARM About Operation CHARM