P0704

DTC P0704 (Gas)








Circuit Description
Battery voltage is supplied from the brake 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 B 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 between 0 - 38 km/h (0 - 24 mph) without the PCM detecting a clutch pedal transition.

Action Taken When the DTC Sets
- For California vehicles, the PCM illuminates the malfunction indicator lamp (MIL) during the second consecutive trip in which the Conditions for Setting the DTC are met.
For Federal vehicles, the PCM does not illuminate the MIL.
- The PCM disables cruise control.
- The PCM disables power take-off.
- The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM records this information as Freeze Frame and Failure Records.
- The PCM stores DTC P0704 in PCM history.

Conditions for Clearing the MIL/DTC
- The PCM turns OFF the MIL during the third consecutive trip in which the diagnostic test runs and passes.
- 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.
- A scan tool can clear the MIL/DTC.