Cruze

DTC P0806-P0808

The clutch pedal position (CPP) sensor is a 3 wire sensor, connected to a 5 V 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.

P0806, P0807 and P0808

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.

DTC P0806 - P0808 are Type A DTCs.

DTC P0806 - P0808 are Type A DTCs.

Schematic Reference

Manual Transmission Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Transmission System Description and Operation

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Engine Control Module Scan Tool Information : LNP → LUJ → LXT → LXV, 2H0 → LLW

1. If DTC P0642, P0643, P0335, P0336, P0607 or P080A is set, refer to 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 .
4. 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.

1. Ignition OFF, disconnect the harness connector of the B25B Clutch Pedal Position Sensor.
2. Ignition OFF, test for less than 1 Ω between the low reference circuit terminal A 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 ECM.

3. Ignition ON, test for 4.8-5.2 V between the 5V reference circuit terminal C 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 ECM.

⇒	If greater than the specified range, test the 5V reference circuit for a short to voltage. If the circuit tests normal, replace the ECM.

4. Ignition ON, observe the scan tool CPP sensor voltage parameter for 0.1 V.

⇒	If less than the specified value, test the signal circuit for a short to ground. If the circuit test normal, replace the ECM.

⇒	If greater than the specified value, test the signal circuit for a short to voltage. If the circuit test normal, replace the ECM.

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 an open/high resistance. If the circuit tests normal, replace the ECM.

6. If all circuits test normal, test or replace the B25B Clutch Pedal Position Sensor.

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 A of 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.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.