wiring diagram MERCEDES-BENZ ML350 1997 Complete Repair Manual

AIR BAG RESTRAINT SYSTEM
1998 AIR BAG RESTRAINT SYSTEMS Mercedes-Benz
DESCRIPTION & OPERATION
All models are equipped with Supplemental Restraint System (SRS). The main components of SRS are a driver
air bag module, passenger air bag module, control unit, SRS warning light, driver knee bolster, passenger knee
bolster, and Emergency Tensioning Retractor (ETR) seat belt assembly. Additionally, all vehicles provide
driver-side and passenger-side impact protection by side air bags which are mounted in the driver-side and
passenger-side doors. Each of the door mounted side air bags utilize sensors which recognize lateral
acceleration durin
g side impact and signal this to the control module. See Fig. 1. NOTE: Information on ML320 is not available. For WIRING DIAGRAMS, See Fig. 32
.
WARNING:To avoid injury from accidental air bag deployment, read and carefully
follow all WARNINGS and SERVICE PRECAUTIONS
.

1998 Mercedes-Benz ML320
AIR BAG RESTRAINT SYSTEM 1998 AIR BAG RESTRAINT SYSTEMS Mercedes-Benz

1998 Mercedes-Benz ML320
AIR BAG RESTRAINT SYSTEM 1998 AIR BAG RESTRAINT SYSTEMS Mercedes-Benz
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Fig. 29: Testing Seat Occupation Recognition Sensor
Courtesy of MERCEDES-BENZ OF NORTH AMERICA
WIRING DIAGRAMS

1998 Mercedes-Benz ML320
AIR BAG RESTRAINT SYSTEM 1998 AIR BAG RESTRAINT SYSTEMS Mercedes-Benz
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Fig. 30: Air Bag System Wiring Diagram (C230, C280 & CLK320)

1998 Mercedes-Benz ML320
AIR BAG RESTRAINT SYSTEM 1998 AIR BAG RESTRAINT SYSTEMS Mercedes-Benz
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Fig. 31: Air Bag System Wiring Diagram (E300, E320, E420 & E430)

1998 Mercedes-Benz ML320
AIR BAG RESTRAINT SYSTEM 1998 AIR BAG RESTRAINT SYSTEMS Mercedes-Benz
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Fig. 32: Air Bag System Wiring Diagram (ML320)

1998 Mercedes-Benz ML320
AIR BAG RESTRAINT SYSTEM 1998 AIR BAG RESTRAINT SYSTEMS Mercedes-Benz
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Fig. 33: Air Bag System Wiring Diagram (S320, S420 & S500)

1998 Mercedes-Benz ML320
AIR BAG RESTRAINT SYSTEM 1998 AIR BAG RESTRAINT SYSTEMS Mercedes-Benz
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Fig. 34: Air Bag System Wiring Diagram (SLK230)

1998 Mercedes-Benz ML320
AIR BAG RESTRAINT SYSTEM 1998 AIR BAG RESTRAINT SYSTEMS Mercedes-Benz
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2000-01 ACCESSORIES/SA FETY EQUIPMENT
Mercedes-Benz - Air Bag Restraint Systems
DESCRIPTION & OPERATION
All models are equipped with Supplemental Restraint Syst em (SRS). The main components of SRS are driver-
side air bag module, passenger-side air bag module, si de air bag modules (located in doors), SRS control
module, side air bag sensors, SRS warning light, driver knee bolster, pa ssenger knee bolster, and Emergency
Tensioning Retractor (ETR) seat belt assembly. Additionally, some vehicles may be equipped with head impact
(curtain type) air bags (located ar ound door windows behind door frame trims).
Both SRS and ETR are electronically activated by a single control module. There are 2 thresholds which must
be exceeded to trigger an ETR acti on, air bag deployment, or both. If a moderately severe frontal collision
occurs exceeding first triggering thre shold where protection from safety belt is sufficient, only Emergency
Tensioning Retractor (ETR) is activated if safety belt is buckled. If a moderately severe frontal collision occurs
exceeding first triggering threshold where protection from safety belt is sufficient, but safety belt is not buckled,
air bag is deployed and ETR is not activated.
If a severe frontal collision occurs exceeding second triggering threshold where protection from safety belt is
insufficient, air bag is deploye d. ETR is activated if safety belt is buckled. If safety belt is not buckled, ETR is
not activated when second triggering threshold is reached. Passenger air bag will deploy even if passenger seat
is not occupied when a triggering thre shold is exceeded. If during a severe frontal collision the power supply is
interrupted, the driver and passenger air bag can still be deployed, but ETR cannot be activated.
The side air bag on the driver-side deploys whenever th e driver-side air bag module is deployed and when there
is a substantial side impact crash. The air bag on the pa ssenger-side will activate only when a sensor (Occupied
Seat Recognition Sensor) in the passenger seat sends a si gnal to the SRS control module that the passenger-side
seat is occupied. During a collision, the side air bag will then deploy.
COMPONENT LOCATIONS NOTE: The following 2000 in
formation represents the latest information available at
time of publication and m ay be useful in diagnosing 2001 vehicles. 2001 wiring
diagrams have been included at the end of this article.
WARNING: Accidental air bag deployment is pos sible. Personal injury may result.
Read and follow all WARNINGS and AIR BAG SAFETY PRECAUTIONS

before working on ai r bag system or related components.

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Mercedes-Benz - Air Bag Restraint Systems
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TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS
(1)
WIRING DIAGRAMS
ApplicationFt. Lbs (N.m)
Steering wheel hub bolt52-66 (70-90)
INCH Lbs. (N.m)
Driver air bag module bolts (torx)44-62 (5-7)
(1)Torque specifications are not av ailable for clockspring assembly, control module or passenger-side
air bag module.

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
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Fig. 59: Air Bag System Wiring Diagram (2000 C230 & C280)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
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