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BM 7 series 730 i. |Reconnected car after absent, but when programming the computer regarding the security system I messed up the input code to activate and deactivate. What is the best solution to reset the car to normal start without a pin
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No . The computer programming won't let it start . An besides that the ignition switch is a input to the body computer , low voltage . You'd be locked out from starting the car for good , you'd mess it it up for sure. Take it to a qualified repair shop an have it fixed right .
Has to be programmed ,yes .
Body Control Module (BCM) Replacement
If the BCM is replaced, the following procedures must be performed in the subsequent order:
• BCM Reprogramming--Refer to Body Control Module (BCM) Programming/RPO Configuration in Computer/Integrating Systems for replacement, setup, and programming.
• Theft Learn--Refer to Programming Theft Deterrent System Components in Theft Deterrent.
A new body control module (BCM) must be programmed with the proper regular production option (RPO) configurations. The BCM stores the information regarding the vehicle options and if the BCM is not properly configured with the correct RPO codes, the BCM will not control all of the features properly. The Tech 2 software will automatically prompt you with the RPO available for the vehicle. Ensure that the following conditions exist in order to prepare for BCM programming:
• The battery is fully charged.
• The ignition switch is in the ON position.
• The data link connector (DLC) is accessible.
• All disconnected modules and devices are reconnected before programming.
To setup a new BCM, access the Vehicle Control Systems in Computer/Integrating Systems menu on the scan tool to program the BCM. Select Module Replacement/Setup and follow the instructions on the scan tool.
If the BCM fails to accept the program, perform the following steps:
• Inspect all BCM connections.
• Verify that the scan tool has the latest software version.
Why ? If you replace the BCM it will need to be programmed . Dealer !!
This vehicle's body control module (BCM) has a bussed electrical center integrated into the housing. Body control relays and fuses are installed directly on the BCM, which simplifies wiring and junction blocks on the vehicle. The body control system consists of the BCM and its associated controls. Battery positive voltage is provided to the BCM from IBCM BATT 1 fuse and the IBCM BATT 2 fuse in the underhood fuse block. The module grounds are wired to ground G201, G203 and G305. The BCM is wired to the GMLAN High speed serial data buss, and the GMLAN Low speed serial data buss, as well as discrete input and output terminals to control the functions of the vehicle's body .
Trying to save you some agravation an wasted time an money . For a do it yourselfer , this is nothing you should be messing with ! You don't have the training to be messing with the BCM .
A new body control module (BCM) must be programmed with the proper regular production option (RPO) configurations. The BCM stores the information regarding the vehicle options and if the BCM is not properly configured with the correct RPO codes the BCM will not control all of the features properly. The Tech 2 software will automatically prompt you with the various RPOs available for the vehicle. Ensure that the following conditions exist in order to prepare for BCM programming:
This entire procedure has been reviewed before starting
The battery is fully charged.
A CANdi module is installed between the vehicle and the scan tool.
The ignition switch is in the ON position.
The data link connector (DLC) is accessible.
All disconnected modules and devices are reconnected before programming.
There is a process known as the computer relearn process. Remove the negative battery cable for 10 minutes. When you reattach the cable turn the key forward to the on position but do not start the carl. Stay in this position for 7 minutes start the vehicle and idle 7 additional minutes. Turn the car off. Turn key forward to in position for 5 more minutes and the job is
You may have shorted out a wire or two during the replacement. I would check the wiring harnesses under the hood, all the fuses and for error codes (DTC's) using a code reader before doing anything else.
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