P0567

Diagnostic Chart:

Schematic:

CIRCUIT DESCRIPTION
The cruise resume/accel switch is an input to the fuel control portion of the PCM. These inputs allow the PCM to control and hold a requested speed. The cruise resume/accel switch sends ignition voltage to the PCM when the switch is closed (ON).

CONDITIONS FOR RUNNING THE DTC
^ The PCM performs this DTC diagnostic continuously.
^ The ignition in the ON position.

CONDITIONS FOR SETTING THE DTC
Ignition voltage on resume request signal circuit when the cruise control ON/OFF switch in the OFF position.
or
^ Resume switch ON for longer than 25.5 seconds the cruise control ON/OFF switch in the ON position.
^ All of the diagnostic set conditions met for 2 seconds.

ACTION TAKEN WHEN THE DTC SETS
^ The PCM disallows all cruise control inputs.
^ TCC shift schedules may be affected.
^ The PCM will not illuminate the Malfunction Indicator Lamp (MIL).
^ The PCM records the operating conditions at the time the diagnostic fails. This information is stored in the Failure Records.

CONDITIONS FOR CLEARING THE MIL/DTC
^ A History DTC clears after forty consecutive warm-up cycles, if this or any other emission related diagnostic does not report any failures.
^ The use of a scan tool.

DIAGNOSTIC AIDS
Check for a resume/accel switch stuck in the engage position or the signal circuit is shorted to voltage.

TEST DESCRIPTION
The numbers below refer to the step numbers on the diagnostic table:
2. This step determines if the signal circuit is shorted to voltage.
3. This step determines if the PCM or switch is at fault.