Instrument Cluster Test 15A - Alternator Light (Battery Symbol)
NOTE:
Perform INSTRUMENT CLUSTER TEST 4A
before proceeding with this test. For connector terminal identification, see CONNECTOR IDENTIFICATION in BODY CONTROL COMPUTER INTRODUCTION. Perform TEST VER-1A
after each repair.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
- Start engine. Using scan tool, select system failures under body monitors. If scan tool does not display alternator status FAILED, go to next step. If scan tool displays alternator status FAILED, see appropriate ALTERNATORS & REGULATORS article under ELECTRICAL.
- Turn ignition off. Turn ignition from OFF position to ON/RUN position and observe alternator light (battery symbol). If alternator light does not come on, go to next step. If alternator light comes on, system is operating properly.
- Turn ignition to UNLOCK position. Using scan tool, actuate ALL LAMPS. If alternator light does not come on, go to next step. If alternator light comes on, replace BCM.
- Turn ignition off. Disconnect instrument cluster. Ensure connectors are clean and not damaged. See Figure in INSTRUMENT CLUSTER TEST 8A. Remove and inspect alternator light bulb. Ensure bulb socket is clean and not damaged. If bulb is defective, replace bulb. If bulb is okay, repair or replace instrument cluster as necessary.