Tremec 5-Speed (TZ0) - Manual Transmission
DTC P0806
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 Descriptor
DTC P0806
- Clutch Pedal Position (CPP) Sensor Circuit Performance
Diagnostic Fault Information
Typical Scan Tool 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
DTCs P0335, P0336, P0502, P0503, P0607, P0808, or P080A are not set.
Conditions for Setting the DTC
The CPP sensor is stuck in range.
Action Taken When the DTC Sets
P0806 is a Type A DTC.
Conditions for Clearing the MIL/DTC
P0806 is a Type A DTC.
Reference Information
Schematic Reference
Manual Transmission Schematics (Tremec 5-Speed (TZ0) - Manual Transmission)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
Manual Transmission Description and Operation (Tremec 5-Speed (TZ0) - Manual Transmission)
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
Control Module References (Programming and Relearning) for scan tool information.
Circuit/System Verification
1. 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.
2. Perform the CPP learn procedure. Refer to Clutch Pedal Position Sensor Learn (Tremec 5-Speed (TZ0) - Manual Transmission).
3. 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.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector of the CPP sensor.
2. Ignition ON, observe the scan tool CPP sensor voltage parameter for 0.1-volt.
• If the voltage is below the specified value, replace the CPP sensor.
• If the voltage is above the specified value, replace the ECM.
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 low to high and high to low without any spikes or dropouts.
• If the resistance is erratic with spikes or dropouts, replace the CPP sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Clutch Pedal Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for ECM replacement, setup and programming