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Information Center Test 4B - Engine Temperature Warning Light Driver Circuit

NOTE: Perform INFORMATION CENTER TEST 4A before proceeding with this test. For connector terminal identification and wiring diagrams, see appropriate sections in this article. Perform VERIFICATION TEST VER-1A after each repair.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting any module connector.
  1. Using scan tool, select BODY SYSTEMS. Read CHIME MONITOR. If engine temp light is illuminated, see INSTRUMENT PANEL - ANALOG article. If engine temperature light is not illuminated, go to next step.
  2. Turn engine off. Turn ignition to ON position. Disconnect Body Control Module (BCM) "A" connector. BCM is located with junction block. See Figure in CHIME TEST 2A. If engine temperature light is not illuminated, replace BCM. If engine temperature light is illuminated, go to next step.
  3. Disconnect information center connector. Remove ignition key. Turn off all lights and accessories. Close all doors. Go to next step.
  4. Using external ohmmeter, measure resistance on information center connector, terminal No. 6 (Violet wire). If resistance is 5 ohms or greater, replace information center. If resistance is less than 5 ohms, repair Violet wire for short to ground.
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