P0807
DTC P0807
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 continuous open or short to ground in either the CPP switch signal circuit or the CPP sensor, DTC P0807 sets. DTC P0807 is a type A DTC.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P0807 Clutch Position Sensor Circuit Low
Conditions for Running the DTC
^ Ignition voltage is greater than 9.0 volts.
^ Ignition ON, with the engine OFF or the engine operating.
^ DTC P0807 runs continuously once the above conditions are met.
Conditions for Setting the DTC
The ECM detects a CPP signal voltage less than 0.001 volts for greater than 0.5 seconds.
Action Taken When the DTC Sets
If equipped, the following actions occur:
^ The malfunction indicator lamp (MIL) is turned ON.
^ DTC P0807 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 turns OFF the MIL after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
^ A Current and a Last Test Failed DTC clears when the diagnostic runs and passes.
^ A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
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.
