DTC 032
CIRCUIT DESCRIPTIONThe Body Control Module (BCM) controls the courtesy lamps through the courtesy lamps feed and return circuits. Battery voltage is applied through the courtesy lamps feed circuit. When the BCM sees the proper inputs it will ground the courtesy lamps return circuit and the courtesy lights will illuminate.
CONDITIONS FOR RUNNING THE DTC
The BCM must command the courtesy lamps OFF.
CONDITIONS FOR SETTING THE DTC
^ The BCM detects a high when the state should be low in the courtesy lamps return circuit.
^ The condition above must be present for more than 0.3 seconds.
ACTION TAKEN WHEN THE DTC SETS
The BCM stores DTC B 22/32 in memory.
CONDITIONS FOR CLEARING THE DTC
^ A current DTC B22/32 will clear if the short to battery in the courtesy lamps return circuit is no longer detected by the BCM.
^ A history DTC B22/32 will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present nor any other malfunction in the BCM is detected.
DIAGNOSTIC AIDS
^ If the DTC B22/32 is a history DTC, the fault may be intermittent. Refer to Testing for Intermittent and Poor Connections in Diagrams.
^ The following conditions may cause an intermittent malfunction to occur:
- An intermittent short to battery positive voltage in the courtesy lamps ground control circuit
- The courtesy lamps could intermittently be shorted to battery positive voltage
- The BCM is intermittently shorted to battery positive voltage
TEST
