Operation CHARM: Car repair manuals for everyone.

P0704





Steps 1-10:




Steps 11-18:





DTC P0704

Circuit Description
Battery voltage is supplied from the ABS fuse to the clutch switch. The clutch switch is a normally closed switch. When the clutch pedal is released, the clutch pedal position switch signal circuit is pulled up to B+. When the clutch pedal is applied, the switch opens, and the voltage drops to 0 volts.
If the powertrain control module (PCM) detects a specified number of vehicle speed transitions without detecting a clutch switch transition, DTC P0704 will set. DTC P0704 is a type C DTC.

Conditions for Running the DTC
No vehicle speed sensor (VSS) DTC P0500.

Conditions for Setting the DTC
The PCM detects 7 changes in vehicle speed 0 - 38 km/h (0 - 24 mph) without the PCM detecting a clutch pedal transition.

Action Taken When the DTC Sets
^ The PCM will not illuminate the malfunction indicator lamp (MIL).
^ The PCM disables cruise control.
^ The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM records this information as Failure Records.
^ The PCM stores DTC P0704 in PCM history.

Conditions for Clearing the DTC
^ A scan tool can clear the DTC.
^ The PCM cancels the DTC default actions when the ignition switch is OFF long enough in order to power down the PCM.
^ A history DTC clears after 40 consecutive warm-up cycles, if no failures are present by this diagnostic or any other emission-related diagnostic.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. This test confirms if the scan tool is receiving a clutch switch position signal.
3. This step inspects the clutch pedal connector and adjustment.