SRS - Air Bag Lamp ON/Multiple Fault Codes Set
SI B 72 03 00
Safety Restraint Systems
December 2003
Service Engineering
This Service Information bulletin supersedes S.I. B72 03 00 dated July 2001.
This revision contains changes to the repair procedures - see attachments.
[NEW] designates changes to this revision
SUBJECT
Repair Instructions for Seat Belt Tensioner Ignition Circuit
MODEL
E36 (3 Series)
E36/7 (Z3)
E38 (7 Series) to 1/02 Production
E39 (5 Series) to 3/03 Production
E46 (3 Series) to 4/02 Production
E53 (X5) to 4/02 Production
SITUATION
Airbag warning light is illuminated, and one or more of the following fault codes may be stored in the Supplemental Restraint System (SRS) airbag
control module fault memory:
E36, Z3, E38, E39 - manufactured prior to March 1999, with Central Airbag "Trigger" Module (ZAE), Multiple Restraint System (MRS), or MRS
II;
E46 Sedan - manufactured prior to September 1999 with MRS II
^ "05 - Ignition circuit of driver's belt tensioner"
^ "06 - Ignition circuit of passenger's belt tensioner"
Z3, E38, E39 - manufactured from March 1999 with MRS III;
E46 Coupe - manufactured from June 1999 with MRS III;
E46 Sedan - manufactured from September 1999 with MRS III;
E53 (X5) - from start of production:
^ "02 - Ignition circuit of driver's belt tensioner"
^ "03 - Ignition circuit of passenger's belt tensioner"
^ "ID - Coupling in firing circuit, driver's belt tensioner"
^ "1E - Coupling in firing circuit, passenger belt tensioner"
CAUSE
Damaged or defective lines and /or interruption in the connections at the ignition circuit of the seat belt tensioner.
Note:
Analysis on returned parts has shown that the belt tensioner is rarely the cause of these faults.
CORRECTION
481
On a customer complaint basis only, and when the above mentioned SRS faults are set in the airbag control module, replace individual
lines/connectors in the driver or passenger seat belt tensioner ignition circuit with the improved harness kit.
[NEW] PROCEDURE
Caution!
When performing diagnosis or repairs to the airbag system, always follow the "Safety Regulations for Handling Components of the Airbag
System" (TIS 32 34..). Comply with airbag safety precautions! Incorrect handling can activate airbag or safety belt tensioner and result in injury.
Disconnect the vehicle's battery before commencing any repairs.
The following tools (found in the Electric Repair Kit IV, P/N 61 9 020) are to be used for conducting all repairs in the ignition circuit of the belt
tensioner:
^ Crimping tool (P/N 61 9 041)
^ Die for crimping tool (P/N 61 9 042) with holder for 0.35 mm2 to 0.50 mm2 butt connectors
^ Insulation striper / wire cutter (P/N 61 9 043).
^ Hot air blower
Refer to the attachments to this Service Information for repair instructions.
[NEW] PARTS INFORMATION
All quantities refer to the repair of a single seat.
482
483
484
485
[NEW] WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
Disclaimer
E36
Repair Instructions for E36
Vehicles concerned:
E36 (without Z3)
Manufacturing period: Start of series production (September 1990) to end of series production (September 2000)
Procedure:
1. Connect BMW diagnostic system (DISplus or GT1) to the vehicle.
2. Read off fault memory.
486
The following fault codes may be stored in the airbag control unit fault memory:
^ "05 - Driver-side belt tensioner triggering circuit"
^ "06 - Passenger-side belt tensioner triggering circuit"
3. Disconnect the vehicle battery.
4. Fit repair wiring harness.
Important:
Comply with safety instructions when handling airbag modules and pyrotechnic belt tensioners.
The minimum transition resistance must be achieved when the repair wiring harness is fitted. For this reason it is essential that the hotspots
in the Repair Instructions are observed.
Service Information bulletin SI 61 01 99 (397) "Airbag, Repair Instructions for triggering circuits" remains valid for damaged or defective
wires and connectors in the triggering circuits of the airbag system.
The following special tools from repair set IV for vehicle electrics (order no. 61 9 020) are needed for professional repairs on the wiring:
- Hand-held stock (without die) (order no. 61 9 041)
- Die for hand-held stock (order no. 61 9 042)
- Insulation strippers (order no. 61 9 043)
Note:
All instructions needed on using the special tools are described in the Operating instructions / volume 1 (order no. 61 9 029).
A conventional workshop hot-air blower is also required.
Remove the front seat concerned.
Release cable tie (1) and unplug connector (2) with cover. Remove seat wiring harness of belt tensioner or unpin or cut off connector of seat
wiring harness.
Plug connector (1) of repair wiring harness section and cover on to belt tensioner. Secure the connector (1) and the cover with a cable tie (2).
Important:
Repair wiring harness section must be routed and secured so that it is free of tension.
487
Secure repair wiring harness section with four cable ties (2) in loops as illustrated underneath the seat upholstery. Connect plug (3) to support
bracket.
Note:
The procedures in these repair instructions may deviate from the "Airbag lead repairs".
Prepare the second repair wiring harness section (1) for installation as follows:
Cut the blue wire on the repair wiring harness section (1) to different lengths (A = approximately 30 mm).
Strip 4 mm at the ends of the wires.
Cutting and stripping wires
Crimp-connect butt joint (1) for wire cross-sections of 0.35 to 0.50 mm2 to the two stripped ends of repair wiring harness section (2).
Crimping buffer pieces
Connect the repair wiring harness section (2) to the plug-in connection already fitted on the seat.
Connect the butt connector on the repair wiring harness section (4) to the BMW diagnostic system through multifunction cable 1 (MFK 1):
(1) MFK 1 from BMW diagnostic system
(2) Double-ended banana plug
488
(3) SAGK4 tapping clips, black and red (DIS measuring probe set 61 1 410)
(4) Repair wiring harness section
On the BMW diagnostic system, select "Multimeter" measuring method with resistance/ohms submenu.
Read off measured value.
Setpoint value: 1 to 6 ohms
Note:
If the setpoint value is not achieved, replace the belt tensioner and return the removed part together with the tester printout.
Continue Fitting the repair wiring harness.
Place the front seat in the vehicle and tilt it back to the rear seat.
Remove the fabric tape (1) on the vehicle wiring harness and slide back insulating sleeve (2) approximately 300 mm.
If necessary unplug the twisted ignition circuit wires from the connector on the vehicle wiring harness.
Shorten yellow/brown triggering circuit wire by 250 mm and yellow/red triggering circuit wire by 220 mm.
Strip 4 mm of the triggering circuit wires.
Cutting and stripping wires
489
Slide heat-shrink sleeves (1) over the triggering circuit wires.
Crimp butt connector on repair wiring harness section (1) with triggering circuit wires.
Brown wire with yellow/brown Blue wire with yellow/red.
Crimping buffer pieces
Slide heat-shrink sleeves (1) over the crimped connections and heat with hot-air blower until glue escapes onto the wires.
Butt connector for repairing connector.
Slide insulating sleeve (1) over the repair and fix to the vehicle wiring harness (2) with a fabric tape.
Install the front seat concerned.
5. Connect vehicle battery.
6. Clear the fault memory.
490
Parts
Reimbursement
E38 and E39
Repair Instructions for E38, E39
Vehicles concerned:
E38, E39
Manufacturing period:
E38: Start of series production until January 2002.
E39: Start of series production until March 2004
Procedure:
1. Connect BMW diagnostic system (DiSplus or GT1) to the vehicle.
2. Read off fault memory.
The following fault codes could be stored in the fault memory of the airbag control unit, depending on manufacturing period and model:
E38, E39 to March 1999
^ "05 - Driver-side belt tensioner triggering circuit"
^ "06 - Passenger-side belt tensioner triggering circuit"
E38, E39 from March 1999
^ "02 - Driver-side belt tensioner triggering circuit"
^ "03 - Passenger-side belt tensioner triggering circuit"
3. Disconnect the vehicle battery.
4. Fit repair wiring harness.
Important:
Comply with safety instructions when handling airbag modules and pyrotechnic belt tensioners.
The minimum transition resistance must be achieved when the repair wiring harness is fitted. For this reason, it is essential that the
hotspots in the Repair Instructions are observed.
Service Information bulletin SI 61 01 99 (397) "Airbag, Repair Instructions for triggering circuits" remains valid for damaged or defective
wires and connectors in the triggering circuits of the airbag system.
491
The following special tools from repair set IV for vehicle electrics (order no. 61 9 020) are needed for professional repairs on the wiring:
- Hand-held stock (without die) (order no. 61 9 041)
- Die for hand-held stock (order no. 61 9 042)
- Insulation strippers (order no. 61 9 043)
Note:
All instructions needed on using the special tools are described in the Operating instructions/volume (order no. 61 9 029).
A conventional workshop hot-air blower is also required.
Remove the front seat concerned.
Remove inner seat cover (1).
If necessary, separate cable strap (2).
Unclip cover (3).
Unlock and separate connector (1) on the belt tensioner.
Partially strip wiring harness (1).
Cut the two black triggering circuit wires (2) for the angled belt tensioner connector.
492
Tape the wiring harness back together with fabric adhesive tape.
Connect the repair wiring harness sections with the connector and feed into the opening on the side of the seat.
Plug angled connector (4) onto the belt tensioner and lock.
Secure repair wiring harness section (2) and wiring harness (1) with cable strap (3).
Clip on cover (1) and press wiring harness (3) into retainer.
Secure repair wiring harness (4) to cover (1) and belt tensioner with cable strap (2).
Install seat cover (5).
Important:
Repair wiring harness section (1) must be routed and secured so that it is free of tension.
Route repair wiring harness section (1) under the seat and into the cable ties (2) in the order shown.
493
Fold the repair wiring harness sections (1) and (2) at the connection to form an "S" shape and secure with cable ties (3).
When securing the "S" shape, the crossed cable ties (3) must securely connect the repair wiring harness sections to the connector housing.
Secure S" shape (1) to plastic cover (2) of central seat connector with a cable strap (3).
Prepare the repair wiring harness as follows:
Cut the blue wire on the repair wiring harness section (1) to different lengths (A = approximately 30 mm).
Strip 4 mm at the ends of the wires.
Cutting and stripping wires
494
Crimp-connect butt joint (1) for wire cross-sections of 0.35 to 0.50 mm2 to the two stripped ends of repair wiring harness section (2).
Crimping buffer pieces
Connect the butt connector on the repair wiring harness section (4) to the BMW diagnostic system through multifunction cable 1 (MFK 1):
(1) MFK 1 from BMW diagnostic system
(2) Double-ended banana plug
(3) SAGK4 tapping clips, black and red (DIS measuring probe set 61 1 410)
(4) Repair wiring harness section
On the BMW diagnostic system, select "Multimeter" measuring method with resistance/ohms submenu.
Read off measured value.
Setpoint value: 1 to 6 ohms
Note:
If the setpoint value is not achieved, replace the belt tensioner and return the removed part together with the tester printout.
Continue fitting the repair wiring harness.
Place the front seat in the vehicle and tilt it back to the rear seat.
Remove the cover cap from connector housing (1) on the vehicle wiring harness and remove the twisted belt tensioner triggering circuit wires
(2) yellow/brown and yellow/red from the connector housing.
Close connector housing (1) again with the cover cap.
495
Remove the fabric adhesive tape from the vehicle wiring harness and slide back insulating sleeve (1) approximately 300 mm.
Cut the triggering circuit wires to different lengths with the following dimensions:
- yellow/brown triggering circuit wire A = 250 mm
- yellow/red triggering circuit wire B = 220 mm
Strip 4 mm of the triggering circuit wires.
Cutting and stripping wires
Slide heat-shrink sleeves (1) over the triggering circuit wires.
Crimp butt connector on repair wiring harness section (1) with triggering circuit wires.
- brown wire with yellow/brown
- Blue wire with yellow/red
Crimping buffer pieces
496
Slide heat-shrink sleeves (1) over the crimped connections and heat with hot-air blower until glue escapes onto the wires (arrows).
Butt connector for repairing connector
Slide insulating sleeve (1) over the repair and fix to the vehicle wiring harness (3) with a cable strap (2).
Connect seat connector (1).
Press wiring harness (2) into retainer (3) and close flap (4) on plastic cover.
Install the front seat concerned.
5. Connect vehicle battery
6. Clear the fault memory
497
Parts
Reimbursement
E46
Repair Instructions for E46
Vehicles concerned:
E46
Manufacturing period: from start of series production to April 2002
Procedure:
1. Connect BMW diagnostic system (DISplus or GT1) to the vehicle.
2. Read off fault memory.
The following fault codes could be stored in the fault memory of the airbag control unit, depending on manufacturing period and model:
E46 Coupe US to March 1999
E46 to September 1999
^ "05 - Driver-side belt tensioner triggering circuit"
^ "06 - Passenger-side belt tensioner triggering circuit"
E46 Coupe US from March 1999
E46 from September 1999
^ "02 - Driver-side belt tensioner triggering circuit"
^ "03 - Passenger-side belt tensioner triggering circuit"
3. Disconnect the vehicle battery.
4. Fit repair wiring harness
Important:
Comply with safety instructions when handling airbag modules and pyrotechnic belt tensioners.
The minimum transition resistance must be achieved when the repair wiring harness is fitted. For this reason it is essential that the hotspots in
the Repair Instructions are observed.
Service Information bulletin SI 61 01 99 (397) "Airbag, Repair Instructions for triggering circuits" remains valid for damaged or defective
498
wires and connectors in the triggering circuits of the airbag system.
The following special tools from repair set IV for vehicle electrics (order no. 61 9 020) are needed for professional repairs on the wiring:
- Hand-held stock (without die) (order no. 61 9 041)
- Die for hand-held stock (order no. 61 9 042)
- Insulation strippers (order no. 61 9 043)
Note:
All instructions needed on using the special tools are described in the Operating instructions / volume 1 (order no. 61 9 029).
A conventional workshop hot-air blower is also required.
Remove the front seat concerned.
Unlock and separate connector (1) on the belt tensioner.
Pull seat wiring harness (2) from retainer (3).
Unclip retainer (1) from carrier (2) and unthread seat wiring harness (3).
Note:
Retainer (1) can be reused.
Pull the cover cap from the central seat connector.
499
Cut off the two belt tensioner triggering circuit wires (1) yellow/brown and yellow/red on the seat wiring harness at the yellow connector
housing (2).
Refit the cover cap.
Note:
On seats without positioning motors and seat heating, the connector is not required.
Prepare the repair wiring harness as follows:
Cut the blue wire on the repair wiring harness section (1) to different lengths (A = approximately 30 mm).
Strip 4 mm at the ends of the wires.
Cutting and stripping wires
Crimp-connect butt joint (1) for wire cross-sections of 0.35 to 0.50 mm2 to the two stripped ends of repair wiring harness section (2).
Crimping buffer pieces
Connect the repair wiring harness sections with the connector.
500
Plug angled connector (1) onto the belt tensioner and lock.
Press repair wiring harness section (2) into retainer (3).
Clip repair wiring harness section (3) into carrier (2) with retainer (1).
Important:
Repair wiring harness section (1) must be routed and secured so that it is free of tension.
Route repair wiring harness section (1) under the seat and into the plastic clips (2) in the order shown.
Fold repair wiring harness sections (1) and (2) at the connector to form an "S" shape.
Note:
501
The position of the cable ties (3) on the "S" shape section is determined by subsequent fastening to the carrier.
Secure "S" shape (1) on carrier (2) of central seat connector with two crossed cable ties (3).
Note:
When securing the "S" shape, the crossed cable ties (3) should securely connect the repair wiring harness sections to the connector
housing.
Connect the butt connector on the repair wiring harness section (4) to the BMW diagnostic system through multifunction cable 1 (MFK 1):
(1) MFK 1 from BMW diagnostic system
(2) Double-ended banana plug
(3) SAGK4 tapping clips, black and red (DIS measuring probe set 61 1 410)
(4) Repair wiring harness section
On the BMW diagnostic system, select "Multimeter" measuring method with resistance/ohms submenu.
Read off measured value.
Setpoint value: 1 to 6 ohms
Note:
If the setpoint value is not achieved, replace the belt tensioner and return the removed part together with the tester printout.
Continue fitting the repair wiring harness.
502
Place the front seat in the vehicle and tilt it back to the rear seat.
Remove the cover cap from connector housing (1) on the vehicle wiring harness and remove the twisted belt tensioner triggering circuit wires
(2) yellow/brown and yellow/red from the connector housing.
Close connector housing (1) again with the cover cap.
Remove the fabric adhesive tape from the vehicle wiring harness and slide back insulating sleeve (1) approximately 300 mm.
Shorten yellow/brown triggering circuit wire by A = 250 mm and yellow/red triggering circuit wire by B = 220 mm.
Strip 4 mm of the triggering circuit wires.
Cutting and stripping wires
Slide heat-shrink sleeves (1) over the triggering circuit wires.
Crimp butt connector on repair wiring harness section (1) with triggering circuit wires.
Brown wire with yellow/brown
Blue wire with yellow/red
Crimping buffer pieces
503
Slide heat-shrink sleeves (1) over the crimped connections and heat with hot-air blower until glue escapes onto the wires.
Butt connector for repairing connector
Slide insulating sleeve (1) over the repair and fix to the vehicle wiring harness (3) with a cable tie (2).
Connect seat connector (1).
Install the front seat concerned.
5. Connect vehicle battery.
6. Clear the fault memory.
Parts
Reimbursement
E53
Repair instructions for E53
Vehicles concerned:
E53
Manufacturing period: from start of series production to April 2002
Procedure:
1. Connect BMW diagnostic system (DISplus or GT1) to the vehicle.
2. Read off fault memory.
The following fault codes may be stored in the airbag control unit fault memory:
504
^ "02 - Driver-side belt tensioner triggering circuit"
^ "03 - Passenger-side belt tensioner triggering circuit"
3. Disconnect the vehicle battery.
4. Fit repair wiring harness.
Important:
Comply with safety instructions when handling airbag modules and pyrotechnic belt tensioners.
The minimum transition resistance must be achieved when the repair wiring harness is fitted. For this reason, it is essential that the hotspots in
the Repair Instructions are observed.
Service Information bulletin SI 61 01 99 (397) "Airbag, Repair Instructions for triggering circuits" remains valid for damaged or defective
wires and connectors in the triggering circuits of the airbag system.
The following special tools from repair set IV for vehicle electrics (order no. 61 9 020) are needed for professional repairs on the wiring:
- Hand-held stock (without die) (order no. 61 9 041)
- Die for hand-held stock (order no. 61 9 042)
- Insulation strippers (order no. 61 9 043)
Note:
All instructions needed on using the special tools are described in the Operating instructions / volume 1 (order no. 61 9 029).
A conventional workshop hot-air blower is also required.
Remove the front seat concerned.
Unlock and separate connector (1) on the belt tensioner.
Pull seat wiring harness (2) from retainer (3).
Unclip retainer (1) from carrier (2) and unthread seat wiring harness (3).
Note:
Retainer (1) can be reused.
505
Pull the cover cap from the central seat connector.
Cut off the two belt tensioner triggering circuit wires (1) yellow/brown and yellow/red on the seat wiring harness at the yellow connector
housing (2).
Refit the cover cap.
Note:
On seats without positioning motors and seat heating, the connector (2) is not required.
Prepare the repair wiring harness as follows:
Cut the blue wire on the repair wiring harness section (1) to different lengths (A = approximately 30 mm).
Strip 4 mm at the ends of the wires.
Cutting and stripping wires
Crimp-connect butt joint (1) for wire cross-sections of 0.35 to 0.50 mm2 to the two stripped ends of repair wiring harness section (2).
Crimping buffer pieces
Connect the repair wiring harness sections with the connector.
506
Plug angled connector (1) onto the belt tensioner and lock.
Press repair wiring harness section (2) into retainer (3).
Clip repair wiring harness section (3) into carrier (2) with retainer (1).
Important:
Repair wiring harness section (1) must be routed and secured so that it is free of tension.
Route repair wiring harness section (1) under the seat and into the plastic clips (2) in the order shown.
Fold repair wiring harness sections (1) and (2) at the connector to form an "S" shape.
Note:
507
The dotted line shows the position of the cable ties (3) on the "S" shape, secured to the carrier in accordance with the description below.
Secure "S" shape (1) on carrier (2) of central seat connector with crossed cable ties (3).
Note:
When securing the "S" shape, the crossed cable ties (3) should securely connect the repair wiring harness sections to the connector
housing.
Connect the butt connector on the repair wiring harness section (4) to the BMW diagnostic system through multifunction cable 1 (MFK 1):
(1) MFK 1 from BMW diagnostic system
(2) Double-ended banana plug
(3) SAGK4 tapping clips, black and red (DIS measuring probe set 61 1 410)
(4) Repair wiring harness section
On the BMW diagnostic system, select "Multimeter" measuring method with resistance/ohms submenu.
Read off measured value.
Setpoint value: 1 to 6 ohms
Note:
If the setpoint value is not achieved, replace the belt tensioner and return the removed part together with the tester printout.
Continue fitting the repair wiring harness.
Place the front seat in the vehicle and tilt it back to the rear seat.
508
Remove the cover cap from connector housing (1) on the vehicle wiring harness and remove the twisted belt tensioner triggering circuit wires
(2) yellow/brown and yellow/red from the connector housing.
Close connector housing (1) again with the cover cap.
Remove the fabric adhesive tape from the vehicle wiring harness and slide back insulating sleeve (1) approximately 300 mm.
Cut the triggering circuit wires to different lengths with the following dimensions:
- Yellow/Brown triggering circuit wire A = 250 mm
- Yellow/Red triggering circuit wire B = 220 mm
Strip 4 mm of the triggering circuit wires.
Cutting and stripping wires
Slide heat-shrink sleeves (1) over the triggering circuit wires.
509
Crimp butt connector on repair wiring harness section (1) with triggering circuit wires.
- brown triggering circuit wires with yellow/brown
- blue triggering circuit wires with yellow/red
Crimping buffer pieces
Slide heat-shrink sleeves (1) over the crimped connections and heat with hot-air blower until glue escapes onto the triggering circuit wires
(arrows).
Butt connector for repairing connector
Slide insulating sleeve (1) over the repair and fix to the vehicle wiring harness (3) with a cable strap (2).
510
Connect seat connector (1).
Install the front seat concerned.
5. Connect vehicle battery
6. Clear the fault memory
Parts
Reimbursement
Z3
Repair Instructions for Z3
Vehicles concerned:
Z3
Manufacturing period: Start of series production (June 1995) to end of series production (June 2002)
Procedure:
1. Connect BMW diagnostic system (DISplus or GT1) to the vehicle.
2. Read off fault memory.
The following fault codes may be stored in the airbag control unit fault memory:
^ "05 - Driver-side belt tensioner triggering circuit"
^ "06 - Passenger-side belt tensioner triggering circuit"
3. Disconnect the vehicle battery.
4. Fit repair wiring harness.
Important:
Comply with safety instructions when handling airbag modules and pyrotechnic belt tensioners.
The minimum transition resistance must be achieved when the repair wiring harness is fitted. For this reason it is essential that the hotspots in
the Repair Instructions are observed.
Service Information bulletin SI 61 01 99 (397) "Airbag, Repair Instructions for triggering circuits" remains valid for damaged or defective
wires and connectors in the triggering circuits of the airbag system.
The following special tools from repair set IV for vehicle electrics (order no. 61 9 020) are needed for professional repairs on the wiring:
- Hand-held stock (without die) (order no. 61 9 041)
511
- Die for hand-held stock (order no. 61 9 042)
- Insulation strippers (order no. 61 9 043)
Note:
All instructions needed on using the special tools are described in the Operating instructions / volume 1 (order no. 61 9 029).
A conventional workshop hot-air blower is also required.
Remove the front seat concerned.
Release cable tie (1) and unplug connector (2) with cover. Remove seat wiring harness of belt tensioner or unpin or cut off seat connector of
seat wiring-harness.
Plug connector (1) of repair wiring harness section and cover on to belt tensioner. Secure the connector (1) and the cover with a cable tie (2).
Important:
Repair wiring harness section must be routed and secured so that it is free of tension.
Secure repair wiring harness section with two cable ties (2) in loops as illustrated underneath the seat upholstery. Connect plug (3) to support
bracket.
Note:
The procedures in these repair instructions may deviate from the "Airbag lead repairs".
Prepare the second repair wiring harness section (1) for installation as follows:
512
Cut the blue wire on the repair wiring harness section (1) to different lengths (A = approximately 30 mm).
Strip 4 mm at the ends of the wires.
Cutting and stripping wires
Crimp-connect butt joint (1) for wire cross-sections of 0.35 to 0.50 mm2 to the two stripped ends of repair wiring harness section (2).
Crimping buffer pieces
Connect the repair wiring harness section (2) to the plug-in connection already fitted.
Connect the butt connector on the repair wiring harness section (4) to the BMW diagnostic system through multifunction cable 1 (MFK 1):
(1) MFK 1 from BMW diagnostic system
(2) Double-ended banana plug
(3) SAGK4 tapping clips, black and red (DIS measuring probe set 61 1 410)
(4) Repair wiring harness section
On the BMW diagnostic system, select "Multimeter" measuring method with resistance/ohms submenu.
Read off measured value.
Setpoint value: 1 to 6 ohms
Note:
If the setpoint value is not achieved, replace the belt tensioner and return the removed part together with the tester printout.
Continue fitting the repair wiring harness.
Place the front seat in the vehicle and tilt it back to the rear seat.
513
Remove fabric tape (1) on vehicle wiring harness and slide back insulating tube (2) by approximately 300 mm.
If necessary unplug the twisted ignition circuit wires from the connector on the vehicle wiring harness.
Shorten yellow/brown triggering circuit wire by 250 mm and yellow/red triggering circuit wire by 220 mm.
Strip 4 mm of the triggering circuit wires.
Cutting and stripping wires
Slide heat-shrink sleeves (1) over the triggering circuit wires.
Crimp butt connector on repair wiring harness section (1) with triggering circuit wires.
514
Brown wire with yellow/brown
Blue wire with yellow/red
Crimping buffer pieces
Slide heat-shrink sleeves (1) over the crimped connections and heat with hot-air blower until glue escapes onto the wires.
Butt connector for repairing connector
Slide insulating sleeve (1) over the repair and fix to the vehicle wiring harness (2) with a fabric tape.
Install the front seat concerned.
5. Connect vehicle battery
6. Clear the fault memory
