P1554
DTC P1554
CIRCUIT DESCRIPTION
The powertrain control module (PCM) inhibits cruise control operation when certain conditions are detected.
The PCM removes the ground for the cruise control inhibit signal circuit in order to disengage cruise control operation. The cruise control module monitors the cruise control inhibit signal circuit in order to determine when to inhibit cruise. When the cruise control module (CCM) activates cruise control operation, the CCM provides a ground for the cruise control engaged signal circuit. The PCM monitors the cruise control engaged signal circuit in order to determine that the cruise control is engaged.
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC P1554 Cruise Control Feedback Circuit
CONDITIONS FOR RUNNING THE DTC
The PCM inhibits cruise control operation by removing the ground for the cruise control inhibit signal circuit.
CONDITIONS FOR SETTING THE DTC
The PCM detects a voltage on the cruise engaged signal circuit when the PCM inhibits cruise control operation.
ACTION TAKEN WHEN THE DTC SETS
The PCM stores the conditions present when the DTC set as Failure Records data only.
CONDITIONS FOR CLEARING THE DTC
- The history DTC clears after 40 malfunction free warm-up cycles.
- The PCM receives a clear code command from the scan tool.
TEST
