P0608

CIRCUIT DESCRIPTION
The PCM creates the vehicle speed signal by pulsing the vehicle speed signal circuit to ground. The PCM monitors the voltage on the vehicle speed signal circuit. If the PCM determines that the voltage is out of the normal operating range, a DTC sets.

CONDITIONS FOR RUNNING THE DTC
- The engine speed is greater than 400 RPM.
- The ignition voltage is between 6 volts and 18 volts.

CONDITIONS FOR SETTING THE DTC
- The PCM detects that the commanded state of the driver and the actual state of the signal circuit do not match.
- The condition must be present for a minimum of 5 seconds.

ACTION TAKEN WHEN THE DTC SETS
- The PCM stores the DTC information in memory when the diagnostic runs and fails.
- The PCM records the operating conditions at the time the diagnostic fails. The PCM displays the failure information in the Failure Records on the scan tool.

CONDITIONS FOR CLEARING THE DTC
- The history DTC clears after 40 malfunction free warm-up cycles.
- The DTC becomes history when the conditions for setting the DTC are no longer present.
- The PCM receives the clear code command from the scan tool.

TEST

Steps 1-10: