Question about 2004 Pontiac Montana
I replaced Starter, theft module in ignition, and at one time the PCM fuse in the inside fuse box would continuosly blow. I went thru the key on engine off reprogramming 3 times and now it will crank but the fuel pump will not turn on. any suggestions. I have replaced the relay with 3 different one. I check continuity from PCM to Relay and it is there.
I cannot find the inside fuse box to fix a blown fuse for my power outlet up front
Posted on Nov 23, 2008
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Posted on Jan 02, 2017
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Valet key (gray plastic end) which can start the vehicle and unlock/lock all doors, but can not unlock/lock the storage compartments, or rear compartment lid lock.
Important: The transponder values are not readable and can not be serviced separately.
Theft Deterrent Module The theft deterrent module contains the software for controlling the VTD System. The theft deterrent module uses the following inputs and outputs to control the VTD system.
Battery voltage from the underhood fuse block PCM/BATT fuse, circuit 240 (ORN).
Ignition start voltage from the ignition switch, circuit 1390 (WHT).
Ground, circuit 450 (BLK).
Outputs Password exchange with the PCM (fuel enable), class 2 message circuit 1807 (PPL).
Powertrain Control Module (PCM) The PCM verifies that the passwords received from the theft deterrent module via the class 2 serial data line are valid. If a password is invalid the PCM disables the fuel delivery system. If the password is valid the PCM enables the fuel delivery system.
Starter Relay The starter relay is controlled by the PCM module via class 2 serial data (CKT 1807 PPL). If the theft deterrent module measures the correct transponder value, the PCM module switches the starter enable control (CKT 447 YEL) to ground. The relay is energized if the ignition switch is in the START position and the gear selector is in the PARK or NEUTRAL positions.
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