P1585

DTC P1585

CIRCUIT DESCRIPTION
The powertrain control module (PCM) removes the ground from the cruise control inhibit signal circuit when it determines that conditions exist for which cruise control should not be enabled. The PCM also monitors the voltage on this circuit in order to determine if a fault exists.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC P1585 Cruise Control Inhibit Output Circuit

CONDITIONS FOR RUNNING THE DTC
- The ignition is ON.
- The system voltage is between 9-16 volts.

CONDITIONS FOR SETTING THE DTC
- The PCM detects that an improper voltage exists on the cruise control inhibit signal circuit.
- The above condition is present for at least 30 seconds.

ACTION TAKEN WHEN THE DTC SETS
The PCM stores the conditions which were present when the DTC set as Fail Records data only. This information is not stored as Freeze Frame data.

CONDITIONS FOR CLEARING THE MIL/DTC
- A history DTC clears after 40 malfunction-free warm-up cycles.
- The PCM receives the clear code command from the scan tool.

TEST DESCRIPTION

Steps 1 - 10:

The number below refers to the step number on the Diagnostic Table.
2. Normally, ignition positive voltage should be present on the control circuit with the PCM disconnected and the ignition turned ON.