(Convertible)

Schematic:

Diagnostic Chart:

CIRCUIT DESCRIPTION
The following inputs command the body control module (BCM) to provide a ground path to the courtesy lamps through circuit 156 to S247:
^ The instrument panel (IP) dimmer switch input
^ The right side door lock input
^ The left side door lock input
^ The rear compartment lid ajar indication switch

S247 distributes the ground through circuit 156 to the following components:
^ The right and left rear courtesy lamps
^ The rear compartment lamp
^ The courtesy/reading lamps

CONDITIONS FOR SETTING THE DTC
Circuit 156 (courtesy lamps return) is shorted to B+ for greater than 50 milliseconds, while the BCM is attempting to ground the circuit. The BCM grounds circuit 156 if one of the following actions occurs:
^ Either door is opened.
^ The rear compartment lid is opened.
^ The IP dimmer switch is turned on.

ACTION TAKEN WHEN THE DTC SETS
^ DTC 22 will set.
^ There is no courtesy lighting in the vehicle.
^ The IP dimmer switch is inoperative.
^ The IP compartment lamp operates normally.
^ The BCM will read out a series of flash codes upon entering the diagnostic mode.

CONDITIONS FOR CLEARING THE MIL/DTC
The fault is corrected and the DTC memory is cleared.

DIAGNOSTIC AIDS
If the only DTC that flashes is a HISTORY code (DTC 32), the problem may be intermittent. Perform the test shown while wiggling the wiring and connectors. This can often cause the fault to appear. Test for a poor connections at the BCM connector, which could cause an open or an intermittent fault. Refer to Diagnostic Trouble Code (DTC) Displaying Displaying DTCs.

TEST DESCRIPTION
The numbers below refer to the step numbers on the diagnostic table.
2. This step tests circuit 156 for a short to B+ with the body control module disconnected.
3. Knowing that there is a short to B+ in circuit 156, this test isolates the short to one side of connector C200.
5. knowing that the short is in the C2OOC side of circuit 156, this test isolates the short to either the harness or the rearview mirror.
8. This step tests for a short between circuit 156 and circuit 149.