Hombre S Regular Cab 4WD V6-4.3L (1999)
Body Control Module: Service and Repair
BCM Programming
BCM Programming/RPO Configuration
1. Ensure that the following conditions exist in order to prepare for BCM programming:
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The battery is fully charged.
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The ignition switch is in the RUN position.
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The data link connector (DLC) is accessible.
2. Refer to the latest Isuzu Technical Communication System (ITCS) Terminal and equipment user's instructions.
3. If the BCM fails to accept the program, perform the following steps:
1. Inspect all BCM connections.
2. Verify that the ITCS Terminal and equipment have the latest software version.
3. Try to program the BCM again. If the programming fails again, replace the BCM.
4. For a functional check, refer to Body Control Module Diagnostic System Check.
See: Testing and Inspection/Initial Inspection and Diagnostic Overview/A Diagnostic System Check - Body Control System
4. Clear the diagnostic trouble codes (DTCs) after the programming is complete.
Learn Procedures
Requirements for Using Any Learn Procedure
Perform the Learn Procedure if any of the following components are replaced:
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The Passlock (TM) sensor
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The Body control module (BCM)
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The powertrain control module (PCM)
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The vehicle control module (VCM)
Passlock (TM) 10 Minute Learn Procedure - Using the ITCS Terminal and the Tech 2Scan Tool
Follow the instructions displayed on the ITCS Terminal and the Tech 2 scan tool for the 10 minute reprogramming procedure.
Passlock (TM) 30 Minute Learn Procedure - Not using the ITCS Terminal and the Tech 2 Scan Tool
1. Turn the ignition switch to the OFF position.
2. Replace the failed component.
3. Turn the ignition switch to the RUN position (NOT the CRANK position).
4. Turn the ignition switch to the CRANK position, then release to the RUN position (Do NOT start the vehicle).
5. Observe the security telltale for 10 minutes.
6. After the ignition switch has been in the RUN position for 10 minutes, the security telltale will transition from ON, then to OFF.
7. Repeat Step 5-8 two more times.
8. After 3 consecutive cycles of the ignition switch are successfully completed, the vehicle will learn the new component on the next ignition lock
cylinder cycle from the OFF position to the CRANK position, then to the RUN position. The vehicle will then start.
9. Clear the DTCs using a scan tool.
