Replacing the body control module (BCM) may be necessary when you service the body control system.
Important: The ignition switch should be in the OFF position when connecting or disconnecting the connectors to the BCM. Always disconnect the Brown BCM connector FIRST and connect the Brown BCM connector LAST. The BCM can set DTC(s) with the ignition switch in the OFF position. The BCM has battery run down protection for the courtesy lamp circuit. The BCM battery run down protection can not detect shorts on inputs or other circuits which it does not control. The scan tool can be used to put the BCM to sleep in order to check for current draws on circuits which are not controlled by the BCM or controlled by the battery run down protection system. If an excessive current draw is detected, refer to Battery Electrical Drain/Parasitic Load Test in Engine Electrical.
Pull the heater control (2) out and down in order to gain access to the body control module.
• | The Techline Terminal |
• | The Scan Tool |