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Home >> Volvo >> 2007 >> C70 Standard >> Repair and Diagnosis (Single Page) >> Restraints >> Passive Restraints >> Occupant Weight Sensor (OWS) And Supplemental Restraint System - Specifications, Electrical/Electronic >> Supplemental Restraint System Module (SRS) >> Signal Specification

Signal Specification

General 

All the values indicated below are only described values, as the power supply is not permitted when the breakout box is connected.

NOTE:

It is important to connect the breakout box and check the ground terminals before taking readings.

U= DC voltage in volts (V)
Ubat = Battery voltage (V)
Ulow = Voltage approximately 0 V
   
Fig 1: Identifying Supplemental Restraint System Module (SRS) Connector A Terminals
GLL117556Courtesy of VOLVO CARS CORPORATION
CONNECTOR A

Control module terminal (75 pin)  Breakout box terminal  Signal type  Ignition on  Other 
#A1 - - - -
#A2 - - - -
#A3 - - - -
#A4 - - - -
#A5 - - - -
#A6 - - - -
#A7 - - - -
#A8 - Short-circuit rail, left side impact airbag   Short-circuits terminals #A33 and #A34 when the connector is not connected to the control module.
#A9 - Short-circuit rail, left side impact airbag   Short-circuits terminals #A33 and #A34 when the connector is not connected to the control module.
#A10 - Short-circuit rail, right side impact airbag   Short-circuits terminals #A35 and #A36 when the connector is not connected to the control module.
#A11 - Short-circuit rail, right side impact airbag   Short-circuits terminals #A35 and #A36 when the connector is not connected to the control module.
#A12 - Short-circuit rail, left inflatable curtain   Short-circuits terminals #A37 and #A38 when the connector is not connected to the control module.
#A13 - Short-circuit rail, left inflatable curtain   Short-circuits terminals #A37 and #A38 when the connector is not connected to the control module.
#A14 - Short-circuit rail, right inflatable curtain   Short-circuits terminals #A39 and #A40 when the connector is not connected to the control module.
#A15 - Short-circuit rail, right inflatable curtain   Short-circuits terminals #A39 and #A40 when the connector is not connected to the control module.
#A16 - - - -
#A17 - - - -
#A18 - - - -
#A19 - - - -
#A20 - - - -
#A21 - - - -
#A22 - - - -
#A23 - - - -
#A24 - - - -
#A25 - - - -
#A26 #1 Collision   not activated U = 8-12 V. Activated U = 2-8 V.
#A27 #2 Rear left seat belt tensioner (-)   Monitoring signal at normal position. Ignition pulse on deployment.
#A28 #3 Rear left seat belt tensioner (+)   Monitoring signal at normal position. Ignition pulse on deployment.
#A29 #4 -   -
#A30 #5 -   -
#A31 #6 Rear right seat belt tensioner (-)   Monitoring signal at normal position. Ignition pulse on deployment.
#A32 #7 Rear right seat belt tensioner (+)   Monitoring signal at normal position. Ignition pulse on deployment.
#A33 #8 Side impact protection (SIPS) bag left (+)   Monitoring signal at normal position. Ignition pulse on deployment.
#A34 #9 Side impact protection (SIPS) bag left (-)   Monitoring signal at normal position. Ignition pulse on deployment.
#A35 #10 Side impact protection (SIPS) bag right (-)   Monitoring signal at normal position. Ignition pulse on deployment.
#A36 #11 Side impact protection (SIPS) bag right (+)   Monitoring signal at normal position. Ignition pulse on deployment.
#A37 #12 Left inflatable curtain (+)   Monitoring signal at normal position. Ignition pulse on deployment.
#A38 #13 Left inflatable curtain (-)   Monitoring signal at normal position. Ignition pulse on deployment.
#A39 #14 Right inflatable curtain (-)   Monitoring signal at normal position. Ignition pulse on deployment.
#A40 #15 Right inflatable curtain (+)   Monitoring signal at normal position. Ignition pulse on deployment.
#A41 #16 Passenger seat belt tensioner (+)   Monitoring signal at normal position. Ignition pulse on deployment.
#A42 #17 Passenger seat belt tensioner (-)   Monitoring signal at normal position. Ignition pulse on deployment.
#A43 #18 Anti-roll bar assembly, left (-)    
#A44 #19 Anti-roll bar assembly, left (+)    
#A45 #20 Adaptive passenger seat belt force limiter (+) (Only USA/CDN)   Monitoring signal at normal position. Ignition pulse on deployment.
#A46 #21 Adaptive passenger seat belt force limiter (-) (Only USA/CDN)   Monitoring signal at normal position. Ignition pulse on deployment.
#A47 #22 Adaptive driver's seat belt force limiter (-) (Only USA/CDN)   Monitoring signal at normal position. Ignition pulse on deployment.
#A47 #22 Driver's lap seat belt tensioner (-) (Only certain markets)   Monitoring signal at normal position. Ignition pulse on deployment.
#A48 #23 Adaptive driver's seat belt force limiter (+) (Only USA/CDN)   Monitoring signal at normal position. Ignition pulse on deployment.
#A48 #23 Driver's lap seat belt tensioner (+) (Only certain markets)   Monitoring signal at normal position. Ignition pulse on deployment.
#A49 #24 Anti-roll bar assembly, right (-)    
#A50 #25 Anti-roll bar assembly, right (+)    
#A51 #26 Local CAN bus SRS, low signal (Only USA/CDN)   During communication the voltage is 1.0-2.5 V.
#A52 #27 Local CAN bus SRS, high signal (Only USA/CDN)   During communication the voltage is 2.5-4.0 V.
#A53 #28 CAN_L bus   During communication the voltage is 1.0-2.5 V.
#A54 #29 Seat position sensor signal ground (common for driver's seat position sensor and passenger seat position sensor) (Only USA/CDN) U = U low  
#A55 #30 Passenger seat position sensor (+) (Only USA/CDN)    
#A56 #31 CAN_H bus   During communication the voltage is 2.5-4.0 V.
#A57 #32 Driver's seat position sensor (+) (Only USA/CDN)    
#A58 #33 Side impact sensor, right front (+)    
#A59 #34 Side impact sensor right front, signal ground U=U low  
#A60 #35 Side impact sensor front left, signal ground U=U low  
#A61 #36 Side impact sensor, left front (+)    
#A62 #37 Passenger seat belt buckle, signal ground U=U low  
#A63 #38 Passenger seat belt buckle (+)    
#A64 #39 Driver's seat belt buckle (+)    
#A65 #40 Driver's seat belt buckle, signal ground U=U low  
#A66 #41 Side impact sensor, right rear (+)    
#A67 #42 Side impact sensor rear right, signal ground U=U low  
#A68 #43 Side impact sensor rear left, signal ground U=U low  
#A69 #44 Side impact sensor, left rear (+)    
#A70 #45- -    
#A71 #46 - -  
#A72 #47 - -  
#A73 #48 -    
#A74 #49 Driver's seat belt tensioner (+)   Monitoring signal at normal position. Ignition pulse on deployment.
#A75 #50 Driver's seat belt tensioner (-)   Monitoring signal at normal position. Ignition pulse on deployment.
Fig 2: Identifying Supplemental Restraint System Module (SRS) Connector B Terminals
GLL117557Courtesy of VOLVO CARS CORPORATION
CONNECTOR B

Control module terminal (30 pin)  Breakout box terminal  Signal type  Ignition on  Other 
#B1 #1 Passenger airbag, stage 1 (+)   Monitoring signal at normal position. Ignition pulse on deployment.
#B2 #2 Passenger airbag, stage 1 (-)   Monitoring signal at normal position. Ignition pulse on deployment.
#B3 #3 Driver airbag, stage 2 (-)   Monitoring signal at normal position. Ignition pulse on deployment.
#B4 #4 Driver airbag, stage 2 (+)   Monitoring signal at normal position. Ignition pulse on deployment.
#B5 #5 Front collision sensor right (+)    
#B6 #6 Driver airbag, stage 1 (+)   Monitoring signal at normal position. Ignition pulse on deployment.
#B7 #7 Driver airbag, stage 1 (-)   Monitoring signal at normal position. Ignition pulse on deployment.
#B8 #8 Passenger airbag switch, signal ground (Not USA/CDN)    
#B9 #9 Front collision sensor right, signal ground    
#B10 #10 Passenger airbag, stage 2 (-)   Monitoring signal at normal position. Ignition pulse on deployment.
#B11 #11 Passenger airbag, stage 2 (+)   Monitoring signal at normal position. Ignition pulse on deployment.
#B12 #12 Passenger airbag switch (sensor A) (Not USA/CDN)   Passenger airbag activated.
#B13 #13 Adaptive steering column (+) (Only USA/CDN)   Monitoring signal at normal position. Ignition pulse on deployment.
#B14 #14 Adaptive steering column (-) (Only USA/CDN)   Monitoring signal at normal position. Ignition pulse on deployment.
#B15 #15 Comfort supply U=U bat Ignition position I, II and III.
#B16 - Short-circuit rail, passenger airbag, stage 1   Short-circuits terminals #B1 and #B2 when the connector is not connected to the control module.
#B17 - Short-circuit rail, passenger airbag, stage 1   Short-circuits terminals #B1 and #B2 when the connector is not connected to the control module.
#B18 - Short-circuit rail, driver's airbag, stage 2   Short-circuits terminals #B3 and #B4 when the connector is not connected to the control module.
#B19 - Short-circuit rail, driver's airbag, stage 2   Short-circuits terminals #B3 and #B4 when the connector is not connected to the control module.
#B20 #20 C line    
#B21 - Short-circuit rail, driver's airbag, stage 1   Short-circuits terminals #B6 and #B7 when the connector is not connected to the control module.
#B22 - Short-circuit rail, driver's airbag, stage 1   Short-circuits terminals #B6 and #B7 when the connector is not connected to the control module.
#B23 #23 Front collision sensor left (+)    
#B24 #24 Front collision sensor left, signal ground    
#B25 - Short-circuit rail, passenger airbag, stage 2   Short-circuits terminals #B10 and #B11 when the connector is not connected to the control module.
#B26 - Short-circuit rail, passenger airbag, stage 2   Short-circuits terminals #B10 and #B11 when the connector is not connected to the control module.
#B27 #27 Passenger airbag switch (sensor B) (Not USA/CDN)   passenger airbag not activated.
#B28 - Short-circuit rail, adaptive steering column (Only USA/CDN)   Short-circuits terminals #B13 and #B14 when the connector is not connected to the control module.
#B29 - Short-circuit rail, adaptive steering column (Only USA/CDN)   Short-circuits terminals #B13 and #B14 when the connector is not connected to the control module.
#B30 #30 15 supply U=U bat Ignition position II and III.