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Home >> Mercedes Benz >> 2021 >> Metris Van Cargo >> Repair and Diagnosis >> Restraints >> Seat Belts >> Seats, Bunks, Restraint Systems (2 Of 4) -- 447 Chassis >> Testing & Repair >> Extend Subharness For Squib Of Active Vent Valve On Front Passenger Airbag - AR91.60-S-0686EG

Extend Subharness For Squib Of Active Vent Valve On Front Passenger Airbag - AR91.60-S-0686EG

Model 447.6##/7## 13 up to 443368 

with code ZU7 (National version for Canada) 

Model 447.6##/7## 13 up to 443368 

with code ZU8 (National version for USA) 

G16488937Courtesy of MERCEDES-BENZ USA
WARNING Risk of injury  during testing and repair operations related to pyrotechnical components Do not expose pyrotechnical component parts to temperatures above 100°C or 212°F. Disconnect current supply when working on such component parts. AS91.00-Z-0008-01A
CAUTION Risk of injury  caused by burns to skin and eyes, risk of poisoning caused by inhaling fumes during soldering. Wear protective gloves, protective clothing and safety glasses. Ensure that the work area is adequately ventilated. Secure power supply cables. Avoid sources of fire in working area. AS00.19-Z-0002-01A
CAUTION Risk of injury  caused by burns to skin and eyes. Risk of poisoning  caused by inhaling fumes when working with heat-shrinkable tubing. Work in well ventilated rooms only. Wear safety glasses with side protection and protective gloves. AS00.19-Z-0001-01A
Notice  Notes on soldering   AH00.19-P-1000-10A
Notice  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
Notice  Notes on replacement of safety-relevant and special components   AH00.19-P-1000-08A
  Notes on soft soldering   AH00.19-P-1000-07A
  Information, assessment and legal requirements when working with, handling and storing pyrotechnical components   AH91.00-Z-0000-10A
  Notes on cable protection   AH00.19-P-1000-11A
  Extend bleed valve squib subharness (1)     
1 Determine and mark positive line on plug (2) of the bleed valve squib subharness (1).    
REFER TO SYSTEM WIRING DIAGRAMS Wiring diagram for supplemental restraint system control unit Model 447.6##/7## 13 to 443368 with code ZU7 (National version for Canada), model 447.6##/7## 13 to 443368 with code ZU8 (National version for USA) PE91.60-S-2106VVE
2 Cut off plug (2) from bleed valve squib subharness (1) (arrow A).    
3 Cut repair wiring harness (3) as per dimension (a) (arrow B). IMPORTANT Dimension (a) is approx. 230 mm.  
4 Extend bleed valve squib subharness (1) using axial solder connector and the repair wiring harness (3).   AR54.18-P-0100-06A
REFER TO SPECIAL TOOLS 000 588 15 84 00 Heat gun NOTES Ensure that the brown line of the repair wiring harness (3) is connected with the marked positive line of the bleed valve squib subharness (1). Otherwise malfunctions occur in the SRS. WS54.00-P-0125B
    SPECIAL TOOL Wire stripper Fig 4
    SPECIAL TOOL Reflector Fig 5
    SPECIAL TOOL Welding bead catcher Fig 1
5 Protect repair point after the line repair with fabric tape.   AR00.19-P-0100-08A
REMOVING Remove     
6 Expose SRS control unit (N2/18) until the electrical connector on the SRS control unit (N2/18) is accessible.   AR91.60-S-0622E 
INSPECT Check     
7 Disconnect electrical connector on SRS control unit (N2/18).    
8 Check resistance of the extended bleed valve squib subharness (1).   AR54.18-P-0600-01A
REFER TO SYSTEM WIRING DIAGRAMS Wiring diagram for supplemental restraint system control unit Model 447.6##/7## 13 to 443368 with code ZU7 (National version for Canada), model 447.6##/7## 13 to 443368 with code ZU8 (National version for USA) PE91.60-S-2106VVE
    SPECIAL TOOL Electrical connection kit Fig 2
    SPECIAL TOOL 126-pin socket box Fig 3
9 Connect electrical connector on SRS control unit (N2/18).    
INSTALLING Install     
10 Reinstall detachable parts in the area of the SRS control unit (N2/18).   AR91.60-S-0622E 
Fig 1: Identifying Welding Bead Catcher (129 589 01 98 00)
G07470431Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Electrical Connection Kit (220 589 00 99 00)
G07320971Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying 126-Pin Socket Box (129 589 00 21 00)
G07470386Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Wire Stripper (220 589 01 99 40)
G07470390Courtesy of MERCEDES-BENZ USA
Fig 5: Identifying Reflector (220 589 01 99 41)
G07470444Courtesy of MERCEDES-BENZ USA