P0704

Schematic:

CIRCUIT DESCRIPTION
The Clutch Pedal Position (CPP) Switch is used to determine when the clutch pedal is applied. Ignition voltage is applied to the control module (PCM/VCM) CPP input through the CPP switch. When the clutch pedal is depressed, ignition voltage is removed from this input. The control module monitors the CPP signal for transitions during normal vehicle operations. If the control module detects that no clutch pedal applications have occurred during a predetermined test cycle, a DTC P0704 will be set.

CONDITIONS FOR RUNNING THE DTC
^ No active VS sensor DTCs.
^ The vehicle speed is now 0 mph but had been more than 40 mph (64 km/h).
^ The brakes are not applied.

CONDITIONS FOR SETTING THE DTC
The VCM has not detected any changes in the clutch switch status.

ACTION TAKEN WHEN THE DTC SETS
^ The control module illuminates the Malfunction Indicator Lamp (MIL) if a failure is detected during 2 consecutive key cycles.
^ The control module sets the DTC and records the operating conditions at the time the diagnostic failed. The failure information is stored in the scan tool Freeze Frame and Failure Records.

CONDITIONS FOR CLEARING THE MIL OR DTC
^ The control module turns OFF the MIL after 3 consecutive drive trips when the test has run and passed.
^ A history DTC will clear if no fault conditions have been detected for 40 warm-up cycles. A warm-up cycle occurs when the coolant temperature has risen 22°C (40°F) from the startup coolant temperature and the engine coolant reaches a temperature that is more than 70°C (158°F) during the same ignition cycle.
^ Use a scan tool in order to clear the DTCs.

DIAGNOSTIC AIDS
When the clutch pedal is released, the clutch switch will be displayed Released in the scan tool data list. If the brake pedal is applied with the clutch pedal released, the clutch switch will be displayed Applied in the scan tool data list.

When the clutch pedal is depressed, the clutch switch will be displayed Applied in the scan tool data list. An intermittent may be caused by any of the following conditions:
^ A poor connection
^ Rubbed through wire insulation
^ A broken wire inside the insulation

Thoroughly inspect any circuitry that is suspected of causing the intermittent complaint. Refer to Testing for Intermittent and Poor Connections in Diagrams.

If a repair is necessary, refer to Wiring Repairs or Connector Repairs in Diagrams.

Diagnostic Chart:

TEST DESCRIPTION
The numbers below refer to the step numbers in the diagnostic table.
2. This test determines if the VCM is receiving data from the clutch switch.
4. This test determines if the clutch switch is stuck on or off.
6. This step checks for a short to B+ in the CPP switch input circuit.