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Test 72B - Shorted Key-In Ignition Circuit

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  in this article. For appropriate wiring diagram, see WIRING DIAGRAMS  section at the end of this article. Perform TEST VER-1B  after each repair.
CAUTION: Always turn ignition off prior to disconnecting or connecting any module connector.
  1. Turn ignition off. Disconnect ignition switch 4-pin connector. Using scan tool, read key-in ignition switch status. If scan tool does not display KEY IN IGNITION CLOSED, replace ignition switch. If scan tool displays KEY IN IGNITION CLOSED, go to next step.
  2. Disconnect Body Control Module (BCM) Blue connector. BCM is located behind left side knee panel. Check, clean and repair connections as necessary. If connections are okay, go to next step.
  3. Using scan tool in ohmmeter mode, check resistance of BCM Blue connector terminal No. 2 (Light Blue wire). If resistance is more than 5 ohms, replace BCM. If resistance is less than 5 ohms, repair short to ground in Light Blue wire.
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