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CPP Sensor Percentage Circuit/System Description The clutch pedal position (CPP) is a three wire sensor, connected to a 5-volt reference circuit, a Conditions for Running the DTC DTCs P0641 or P0651 are not set. The system voltage is more than 9 volts. The ignition is in the RUN position. Conditions for Setting the DTC P0807 The CPP sensor voltage is less than 0.1 volt for more than 1 second. P0808 Circuit Ground Open Voltage Operating Conditions: Ignition ON. 0 volts 0 volts 5 volts CPP Sensor Signal 0 volts 0 volts 5 volts CPP Sensor Low Reference - 5 volts - Circuit Short to Ground Open Short to Voltage Operating Conditions: Ignition ON. 100% 100% 0-100% CPP Sensor Signal 100% 100% 100% CPP Sensor Low Reference - 0% -
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Manual Transmission - Tremec 5-Speed (M96) - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
The CPP sensor voltage is more than 5.2 volts for more than 1 second. Action Taken When the DTC Sets P0807 and P0808 are Type A DTCs. Conditions for Clearing the MIL/DTC P0807 and P0808 are Type A DTCs. Reference Information Schematic Reference PSD SIE TITLE Error: SIE linked to empty Cell ID 168122 Connector End View Reference Component Connector End Views Description and Operation Manual Transmission Description and Operation Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs DTC Type Reference Powertrain Diagnostic Trouble Code (DTC) Type Definitions Scan Tool Reference Control Module References for scan tool information. Circuit/System Verification 1. If DTC P0641 or P0651 is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Manual Transmission - Tremec 5-Speed (M96) - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
2. Ignition ON, observe the scan tool CPP sensor percent parameter. The percentage should vary from 0 percent when the clutch pedal is released, to 100 percent when the clutch pedal 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 Circuit/System Testing 1. Ignition OFF, disconnect the harness connector of the CPP sensor. 2. Ignition OFF, test for less than 1 ohm between the low reference circuit terminal A and the negative post of the battery. If greater than the specified value, test the low reference circuit for an open/high 3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal C and ground. If less than the specified range, test the 5-volt reference circuit for a short to ground or If greater than the specified range, test the 5-volt reference circuit for a short to 4. Ignition ON, verify that the scan tool CPP sensor parameter is less than 0.1 volts. If greater than the specified value, test the signal circuit for a short to voltage. If the 5. Install a 3-amp fused jumper wire between the signal circuit terminal B and the 5-volt reference circuit terminal C. Verify that the scan tool CPP sensor parameter is between 4.8- If less than the specified range, test the signal circuit for a short to ground or an 6. If all circuits test normal, test or replace the CPP sensor. Component Testing 1. Ignition OFF, disconnect the harness connector of the CPP sensor. 2. Measure the resistance between the signal terminal B and the low reference terminal A of the CPP sensor. Sweep the CPP sensor through the entire range. The resistance should vary
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Manual Transmission - Tremec 5-Speed (M96) - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
If the resistance is erratic with spikes or dropouts, replace the CPP sensor. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Clutch Pedal Replacement Control Module References for ECM replacement, setup and programming DTC P080A Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptor DTC P080A Clutch Pedal Position (CPP) Not Learned Circuit/System Description The clutch pedal position (CPP) is a three wire sensor, connected to a 5-volt reference circuit, a Conditions for Running the DTC Clutch pedal fully applied. Conditions for Setting the DTC Clutch pedal position not learned. Action Taken When the DTC Sets P080A is a Type B DTC.
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Manual Transmission - Tremec 5-Speed (M96) - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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