Central locking is not responing via remote or via the switch on the driver side door. We need location of the central locking control module to check for damage. Car had recently drowned in a flood and wouldnt start either. The car is equiped with immobiliser and it seems also that it would require new ECU board with new keys,etc.The car has been cleaned and the engine cranks smoothly and all other electrical features such as radio, guages, aircon blower, power windows are working. Need expert advise to get this car going.

Sorry Andrew , no BCM on this vehicle . The Central Security Module is incharge of power door locks . Central Security Module For additional information, refer to Section 419-10 .
The central security module is equipped with a battery back-up which holds the programmed transmitter(s) memory in the event of the vehicle battery disconnection.
Principles of Operations The Door Switch Lock Function When a door lock switch is moved into the lock position or a door lock cylinder is rotated to the lock position, the door lock switch grounds the lock circuit input to the central security module. The central security module then provides 12 volts to one side of the door lock actuators contained in the door latch unit and simultaneously grounds the other side of the door lock actuators. This completes the door lock actuator circuit, causing the door lock actuators to rotate a cam assembly, which then locks the doors.

The Door Switch Unlock Function When a door lock switch is moved into the unlock position, the door lock switch grounds the unlock circuit input to the central security module. The central security module then provides 12 volts to the opposite side (relative to locking the door) of the door lock actuator(s) contained in the door latch unit and simultaneously grounds the other side of the door lock actuator(s). This completes the door lock actuator circuit, causing the door lock actuator(s) to rotate a cam assembly in the opposite direction, which then unlocks the door(s). The 12 volts which the central security module provides to the door lock actuator(s) are provided to each door lock actuator from the individual pins on the central security module connector.

Keyless Entry When a remote transmitter button is depressed, it transmits the appropriate command to the central security module as a radio frequency. The central security module receives the command from the remote transmitter through an antenna, which is incorporated in the central security module.
When the central security module receives a command from the remote transmitter, it then sends the appropriate output to control the desired devices. These outputs devices include:

• The front and rear door lock units.
• Central timer module (CTM).
• The liftgate release motor.
• The right and left side turn signal lamp(s).

The central security module sends a signal to the CTM when courtesy lamp illumination is required.
Computer Operated Locks Each front door lock actuator contains a bipolar motor that controls the lock and unlock linkage. The lock/unlock lever of both front door interior handles use linkage to actuate the lever lock switch located inside each front door lock actuator. Each lever lock switch remains in the unlock position until lock/unlock lever of the interior door handle is moved to the lock position. This action toggles the lever lock switch to the lock position. The central security module uses only one electrical input for both lever lock switches. The central security module cannot determine whether the driver or passenger door lever lock switch was actuated. Therefore, actuating the lock feature from either front door will have the same affect of locking all doors. Actuating the unlock feature will not unlock any other door.
The door lock control switches for both front doors also use only one input to the central security module.
Both rear passenger doors contain a rear door lock actuator that controls only electric lock or unlock of the door. Actuating the lock/unlock lever at either rear passenger door will have no effect on other doors.
The panic feature of the remote transmitter sounds the vehicle horn when the vehicle is not equipped with anti-theft. If the vehicle is equipped with anti-theft feature, a separate horn is sounds for the panic feature.

Does it have keyless entry ?
Power Door Locks
The central security module controls the power door lock and keyless entry system. The lock and unlock operation is carried out by supplying ground to the central security module from the door lock control switch. The normal path of the actuators is to ground through the central security module. The door lock control switch will lock and unlock all doors by grounding the appropriate circuit to the central security module. The central security module then supplies power to the appropriate common actuator circuit to lock or unlock all doors.

Keyless Entry
The keyless entry remote transmitter sends a frequency that is received by the central security module internal antenna. Depending on the frequency received, the central security module will lock all doors or unlock the driver door. If the unlock frequency is received again within five seconds of the first unlock, the central security module will unlock all doors.
If the frequency received is from the panic button, the central security module will cycle ground to the parking lamps and horn. The parking lamps and horn will continue to cycle until the panic button is pressed again or the ignition switch is turned to the RUN position.

All - driver - passenger - front an back ? Look for broken wires inside the rubber boot from the body to the door ,driver side !

Power Windows Operation
Power Windows
The vehicle is equipped with power windows controlled by the door modules. The DDM receives a window switch request, over the SBI serial data, from either the passenger door module wired to the window switch pressed or from the driver door switch assembly. The DDM checks the Class 2 serial data to see if the status information is correct (i.e. ignition switch position) to permit window operation.
If the status information to permit window operation is correct, the DDM sends the command to the door module controlling the window to move the window as requested.
Windows Power and Ground
The windows are powered by discreet power and ground circuits. These circuits are in the same dedicated connector as the window motor drive circuits.

PWR/WDO 30 amp circuit breaker located in the rear fuse box ,DRVMDL fuse 10amp located in the same rear fuse box . This power the driver door module (computer )

The vehicle is equipped with power door locks. Each lock actuator is powered and controlled by the door module mounted in the individual door. The driver door module (DDM) is the master control for the door lock system but the rear integration module (RIM) contains the program that determines when the lock functions are permitted.
The exterior key cylinders are wired to either the DDM or the passenger door module (PDM), depending on the location of the key cylinder. The interior lock switches are wired to the driver door switch assembly (DDSA) and the PDM. The DDSA and the PDM send the lock switch requests to the DDM over the simple bus interface (SBI) serial data circuit. The DDM then sends the lock requests to the RIM over the Class 2 serial data circuits.
The door lock operation modes are controlled by the rear integration module (RIM). The RIM examines the requested function from the DDM, or the remote function actuator (RFA), as well as the transmission shift selector position and the ignition switch position information available over the Class 2 serial data circuits. The RIM determines if a locking function is permitted, and commands the DDM to perform the function permitted. The DDM then sends commands to the rest of the door modules via the SBI to implement the selected locking function.
All programmable modes of lock system operation are stored in the RIM. The RIM checks the lock function program selected against the lock requests, the transmission selection and ignition key switch condition to determine if the requested function is permitted. If the requested function is permitted, the RIM then commands the DDM to perform the lock function over the Class 2 serial data circuits. The DDM commands the individual door modules to perform the lock function over the SBI serial data circuit.


GOOD luck your going to need it !

You have the lock/unlock switch on the drivers door module. You can also unlock all doors via the remote control by activating that option via the EVIC (electronic vehicle information center).

You can't figure out thing's without knowing how there work , what controls them . In this case a control module .
Principles of Operation

Power Door Locks
The central security module controls the power door lock and keyless entry system. The lock and unlock operation is carried out by supplying ground to the central security module from the door lock control switch. The normal path of the actuators is to ground through the central security module. The door lock control switch will lock and unlock all doors by grounding the appropriate circuit to the central security module. The central security module then supplies power to the appropriate common actuator circuit to lock or unlock all doors.
Plus we don't guess , we test the electrical circuits with a DVOM - digital multimeter or a test light . We use a wiring diagram so we know which part of the circuits to test .

Keyless Entry
The remote transmitter sends a frequency that is received by the central security module internal antenna. Depending on the frequency received, the central security module will lock all doors or unlock the driver door. If the unlock frequency is received again within five seconds of the first unlock, the central security module will unlock all doors.
If the frequency received is for the panic button, the central security module will cycle ground to the park lamp and horn. The park lamps and horn will continue to cycle until the panic button is pressed again or the ignition switch is turned to the RUN position or 2.75 minutes elapse.
Plus we hook up a scan tool that can read codes from the control module , not a code reader for engine codes , won't work ! Need a professional scan tool .Do you know what DTC'S are ? Diagnostic trouble codes !
Central Security Module Diagnostic Trouble Code (DTC) Index DTC Description Source Action to Take B1309 Power Door Lock Circuit Short to Ground Central Security Module Go To Pinpoint Test C . B1341 Power Door Unlock Circuit Short to Ground Central Security Module Go To Pinpoint Test C . B1485 Brake Pedal Input Circuit Short to Battery Central Security Module Go To Pinpoint Test E . B1526 Keyless Entry Circuit Short to Ground Central Security Module Go To Pinpoint Test F . B1629 PRNDL Reverse Input Short to Battery Central Security Module Go To Pinpoint Test E . B2276 Less Than Two Transmitters Programmed Central Security Module Go To Pinpoint Test I . B2425 Remote Keyless Entry Out of Synchronization Central Security Module Go To Pinpoint Test I . - All Other DTCs Central Security Module REFER to Section 419-10 .

• All door locks are inoperative

• Battery junction box (BJB) fuse(s):
  • 8 (15A).
  • 115 (20A) (Super Crew).
• Circuitry.
• Central security module.

• Go To Pinpoint Test C .

Seams you lack the knowledge and test equipment to tackle this type of repair . Your best bet mite be to have a qualified repair shop check it out.
So, without testing i couldn't even begin to suggest what mite be wrong . I would only be guessing , as would anyone on here would.

According to WIS, the remote boot release is directly connected to the PSE via CAN
The pneumatic system equipment makes vacuum or pressure available for the following systems:Central locking (CL), (pressure, vacuum)Remote trunk release (RTR), (pressure)- actuation via remote trunk release switch or via radio
AD80.20-P-2002-02B Remote trunk release, general notes on Models 202.01/02/12/12 as of 1.6.97,diagnosis, advanced information, RTR 208, 210 as of 1.3.97, 210.081Actuation of PSE control module:The remote trunk release switch (N72s15) is connected to the PSE control module (combined) (A37) via CAN data buses. The remote trunk release radio signal from the key is conveyed to the overhead control panel control module (N70) via theantenna. This transmits the signal to the electronic ignition switch control module (N73) via CAN data buses. If a valid signal is recognized there the PSE control module (combined) (A37) is actuated via CAN data buses. The remote trunk release IR signal from the key is conveyed to the respective door control module (N69/1, N69/2) via the IR receivers (A26/1, A26/2). This transmits the signal to the electronic ignition switch control module (N73) via CAN data buses. If a valid signal is recognized there the PSE control module (combined) (A37) is actuated via CAN data buses.
If the trunk lid is unlocked the LED in the remote trunk releaseswitch (N72s15) is actuated by the PSE control module (combined)(A37) via CAN data buses.
Special features on model 208.4 (Cabriolet)The trunk lid cannot be released remotely with the transmitter key.The rollover bar (RB)/soft top operation control module (N52)signals via the CAN interior data bus whether the soft top is lockedor unlocked or the power soft top switch (S84) is operated. As long as the CAN message reads:"Power soft top switch (S84) operated" or"soft top unlocked"the trunk lid cannot be released remotely.

Pneumatics testingPermissible leakage in complete system at:vacuum of 300 mbar within 1 minute: 30 mbarPermissible leakage of actuators with lines at:vacuum of 300 mbar within 1 minute: 25 mbar
Thanks

This is what I have for the Golf 2001:

' ITEM ' WIRE COLOR 'POL' WIRE LOCATION '
' 12V 'red '+ 'ignition harness '
' STARTER 'red/gray '+ 'ignition harness '
' IGNITION 'black '+ 'ignition harness '
' ACCESSORY 'black/red '+ 'ignition harness '
' POWER LOCK 'yellow/blue '- 'drivers door module *1 '
' POWER UNLOCK 'green/red *2 '- 'drivers door module *1 '
' LOCK MOTOR 'purple/yellow ' 'drivers door module *1 '
' UNLOCK MOTOR 'blue/yellow ' 'drivers door module *1 '
' DISARM DEFEAT 'pur/yel or blu/yel ' 'passengers door module *3 '
' PARKING LIGHTS + 'gry/red & gry/blk ' 'drivers kick panel '
' HEADLIGHTS 'yellow/red '+ 'headlight switch '
' DOOR TRIGGER 'blue/gray *4 '- 'comfort module *5 '
' DOME SUPERVISION 'blue/gray '- 'comfort module *5 '
' TRUNK/HATCH PIN 'brn/blk or brn/blu '- 'hatch light '
' HOOD PIN 'brown/red '- 'comfort module *5 '
'TRNK/HTCH RELEASE 'brown/black '- 'comfort module *5 '
' FCTRY ALARM ARM 'arms w/ lock ' ' '
' FCTRY ALRM DISARM 'disarms w/ unlock ' ' '
' TACHOMETER 'green/stripe ' 'ignition coil '
' SPEED SENSE ' ' ' '
' BRAKE WIRE 'red/black '+ 'drivers kick panel '
' HORN TRIGGER 'black/yellow '+ 'comfort module *5 '
' WIPERS 'grn/yel and green '+ 'wiper motor

*1 The drivers door module is located in the drivers door.
*2 A double pulse will unlock all doors and disarm the factory alarm.
*3 The passengers door module is located in the passengers door.
*4 This wire will read the dome light delay. The avoid the dome light delay, use the separate door trigger wires and diode isolate each one. They are brown/white and are all located in their own door at their own door module.
*5 The comfort module is the main control module located under the drivers side of the dash.

Use this diagram for the door trigger isolation: motorsport.com/images/install_notes/149.jpg

Use DIAGRAM A.


Hope this helps.

Does the switch inside for that door work ? Does the power window work for that door ? Check fuse DDM - 15 amp I/P fuse panel . Do you know where the insturment panel fuse box is located ?
Fuse Block - I/P
Left of the I/P behind the side trim panel
# 4
DDM Fuse
15A
Driver Door Module (DDM)

Do you know anything about automotive electronic's , control module's ? Serial data communication networks ?
Circuit/System Description
The driver and passenger door lock and side window switches are integrated control module switch assemblies. The DDS and PDS door lock switches are normally open, 2 position rocker type switches, with detents for lock and unlock. The DDS and PDS are directly connected to the respective door lock actuator through the door lock actuator control circuits. When a door lock or unlock function is activated from the DDS or PDS, a serial data message lock or unlock command is sent to the other door switch and body control module.

TURN ON IGNITION SWITCH WITH ENGINE OFF.POINT THE REMOTE TRANSMITTER AT CENTRAL LOCKING SIGNAL CONTROL MODULE LOCATED BEHIND PASSENGERS SIDE C POST.WITHIN 4 SECONDS PRESS LOCK OR UNLOCK.WITH REMOTE TRANSMITTER.WITHIN 4 SECONDS SWITCH IGNITION OFF.WITHIN 4 SECONDS SWITCH ON IGNITION WITH ENGINE OFF.WITHIN 4 SECONDS PRESS LOCK OR UNLOCK USING REMOTE TRANSMITTER.WITHIN 4 SECONDS SWITCH OFF IGNITION SWITCH.REMOVES KEYS FROM IGNITION SWITCH WAIT 10 SECONDS THEN TRY USING REMOTE TO SEE IF IT WORKS DOOR LOCKS.IF THIS PROCEDURE DONT WORK.TAKE TO DEALERSHIP.

drivers central door locking module is kaput and needs flinging as far as you can then replace it with a new one or a salvaged one