P0704

Electrical Diagram:

CIRCUIT DESCRIPTION

The clutch switch is a normally closed switch. The PCM receives an ignition voltage on the clutch switch circuit when the clutch switch is closed. The PCM receives 0.0 voltage on the clutch switch circuit when the clutch switch is open.

This DTC determines if the Transmission Clutch switch has failed by looking for a clutch switch transition within a range from 0.0 mph to some higher speed.

CONDITIONS FOR SETTING THE DTC

^ No VSS DTCs.

^ Vehicle speed goes from 0.0 mph to greater than 24 mph and back to 0.0 mph for 2 seconds without the PCM detecting a clutch transition. This must occur 7 times before the diagnostic reports a fault.

ACTION TAKEN WHEN THE DTC SETS

^ The PCM illuminates the Malfunction Indicator Lamp on the second consecutive drive trip that the diagnostic runs and fails.

^ The PCM records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the PCM stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive drive trip, the PCM records the operating conditions at the time of the failure. The PCM writes the conditions to the Freeze Frame and updates the Failure records.


CONDITIONS FOR CLEARING THE MIL/DTC

^ The PCM turns the MIL OFF after three consecutive drive trips that the diagnostic runs and does not fail.

^ A last test failed (current DTC) clears when the diagnostic runs and does not fail.

^ A History DTC clears after forty consecutive warm-up cycles, if this or any other emission related diagnostic does not report any failures.

^ The PCM battery voltage is interrupted.

^ Use a scan tool in order to clear the MIL/DTC.


DIAGNOSTIC AIDS

The following may cause an intermittent:

^ Check for poor connections. Check for adequate terminal tension. Refer to Body and Accessories/Diagrams for proper procedure.

^ Corrosion

^ Mis-routed harness

^ Rubbed through wire insulation

^ Broken wire inside the insulation

Refer to Transmission/Transaxle for clutch switch adjustment.

Using Freeze Frame and/or Failure Records data may aid in locating an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame and/or Failure Records data can aid in determining how many miles since the DTC set. The Fail Counter and Pass Counter can also aid determining how many ignition cycles the diagnostic reported a pass and/or a fail. Operate the vehicle within the same freeze frame conditions (RPM, load, vehicle speed, temperature etc.) that you observed. This will isolate when the DTC failed. For an intermittent, refer to Symptoms. Testing and Inspection

TEST DESCRIPTION

The numbers below refer to the step numbers on the diagnostic table.

2. This step determines if the fault is present.