Test 57B - Turn Signal On
CAUTION:
Always turn ignition off prior to disconnecting or connecting any module connector.
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS - 3.0L
article in ENGINE PERFORMANCE. Perform TEST VER-1 after each repair.
- Turn ignition on. Using scan tool, read turn signal lever switch status. Move turn signal lever to left turn position. If scan tool display does not pulse between OPEN and CLOSED, go to step 4). If scan tool display pulses between OPEN and CLOSED, go to next step.
- Move turn signal lever to right turn position. If scan tool display pulses between OPEN and CLOSED, replace Body Control Module (BCM). BCM is located behind right kick panel. If scan tool display does not pulse between OPEN and CLOSED, go to next step.
- Turn ignition off. Disconnect BCM Natural connector. Check, clean and repair connections as needed. Turn ignition on. Using scan tool in voltmeter mode, check voltage on BCM Natural connector terminal No. 7 (Tan wire). If voltage is less than 10 volts, repair open in Tan wire between BCM Natural connector and right rear turn signal and brakelamp relay. See Fig 1. If voltage is more than 10 volts, replace BCM.
- Turn ignition off. Disconnect BCM Black connector. Check, clean and repair connections as needed. Turn ignition on. Using scan tool in voltmeter mode. Ensure turn signal lever is in left turn position. Check voltage on BCM Black connector terminal No. 15 (Light Green wire). If voltage is more than 10 volts, replace BCM. If voltage is less than 10 volts, repair open Light Green wire between BCM Black connector and left rear turn signal and brakelamp relay. See Fig 1.