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 signal circuit, a low reference signal circuit and a sensor signal circuit. The ECM supplies the 5-volt reference signal to the CPP sensor.
With the pedal released the CPP sensor signal should read above 4 volts. With the pedal fully depressed the CPP sensor signal should read below 1 volt.
When the ECM detects a stuck CPP sensor, 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
^ No CKP sensor DTCs P0335 or P0336.
^ No VSS DTCs P0502 and P0503.
^ No CPP sensor DTCs P0807, P0808, and P080A.
^ The vehicle is in gear.
Conditions for Setting the DTC
The ECM detects a clutch position error greater than 5 percent for greater than 6 seconds.
Action Taken When the DTC Sets
^ The ECM illuminates the malfunction indicator lamp (MIL).
^ The ECM records the operating conditions when the Conditions for Setting the DTC are met. The ECM stores this information as Freeze Frame and Failure Records.
^ The ECM stores DTC P0806 in ECM history.
Conditions for Clearing the DTC
^ The ECM turns OFF the MIL during the third consecutive trip in which the diagnostic test runs and passes.
^ A scan tool can clear the MIL/DTC.
^ The ECM clears the DTC from ECM history if the vehicle completes 40 warm-up cycles without an emission related diagnostic fault occurring.
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.
^ A malfunctioning or damaged CPP Sensor may cause this DTC to set.
Test Description
The number below refers to the step number on the diagnostic table.
2. This step tests for the current state of the CPP sensor.
Step 1 - Step 6:
Step 7 - Step 13:
