P0806
DTC P0806
Circuit Description
The clutch pedal position (CPP) sensor is an input to the engine control module (ECM). The CPP sensor is a potentiometer type sensor with a 5-volt reference circuit, a common low reference circuit and an independent signal circuit. The ECM supplies the 5-volt reference to the CPP.
The CPP sensor has opposite functionally. With the pedal released the CPP signal switch should read above 4 volts. With the pedal fully depressed the CPP signal switch should read below 1 volt.
When the ECM detects a stuck CPP switch, DTC P0806 sets. DTC P0806 is a type A DTC.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P0806 Clutch Position Sensor Circuit Range/Performance
Conditions for Running the DTC
^ DTCs P0807, P0808, and P080A are not set.
^ DTCs P0502 and P0503 are not set.
^ No Crank sensor DTCs are set.
^ The vehicle is in gear.
Conditions for Setting the DTC
The ECM detects a clutch position error greater than 5 percent.
Action Taken When the DTC Sets
If equipped, the following actions occur:
^ The malfunction indicator lamp (MIL) is turned ON.
^ DTC P0806 is stored in memory.
^ The Freeze Frame/Failure Records are stored.
^ The Failure Records are updated after the first failure of each ignition cycle.
Conditions for Clearing the DTC
^ The condition for the DTC is no longer present and the DTC is cleared with a scan tool.
^ The ECM automatically clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Diagnostic Aids
Use the J 35616 GM-approved Terminal Test Kit for any test that requires probing the ECM harness connector or any component connector.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. This step tests for the current state of the CPP sensor.
