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Supplemental Restraint System (SRS) - Specifications, Electrical/electronic: Specifications Volvo V40 I рестайлинг

Passive Restraints 1 illustration

SRS Signal Specification

All readings given below are taken between the terminal in column 1 and the casing for the supplemental restraint system module (SRS). This applies unless otherwise indicated in brackets. The supplemental restraint system module (SRS) is grounded internally via the casing because the control module is screwed to the car.

WARNINGIt is important to use an ESD bracelet as a ground when working with the SRS system. There is a risk that the components may deploy. The bracelet must ground to the chassis not to the control module.
U=DC voltage in volts (V)F =Frequency in Hertz (Hz)
Ulow =Voltage approximately 0 V% duty =Duty cycle (pulse ratio) as a percentage (%)
Ubat =Battery voltage

Scheme 73

Scheme 73
Scheme 73
TerminalBreakout boxSignal typeIgnition onOther
#1
#2Short-circuit railConnects terminals 27 and 28 when the sensor is disconnected.
#3Short-circuit railConnects terminals 27 and 28 when the sensor is disconnected.
#4Short-circuit railConnects terminals 29 and 30 when the sensor is disconnected.
#5Short-circuit railConnects terminals 29 and 30 when the sensor is disconnected.
#6Short-circuit railConnects terminals 31 and 32 when the sensor is disconnected.
#7Short-circuit railConnects terminals 31 and 32 when the sensor is disconnected.
#8Short-circuit railConnects terminals 33 and 34 when the sensor is disconnected.
#9Short-circuit railConnects terminals 33 and 34 when the sensor is disconnected.
#10Short-circuit railConnects terminals 35 and 36 when the sensor is disconnected.
#11Short-circuit railConnects terminals 35 and 36 when the sensor is disconnected.
#12Short-circuit railConnects terminals 37 and 38 when the sensor is disconnected.
#13Short-circuit railConnects terminals 37 and 38 when the sensor is disconnected.
#14Short-circuit railConnects terminals 39 and 40 when the sensor is disconnected.
#15Short-circuit railConnects terminals 39 and 40 when the sensor is disconnected.
#16Short-circuit railConnects terminals 41 and 42 when the sensor is disconnected.
#17Short-circuit railConnects terminals 41 and 42 when the sensor is disconnected.
#18Short-circuit railConnects terminals 43 and 44 when the sensor is disconnected.
#19Short-circuit railConnects terminals 43 and 44 when the sensor is disconnected.
#20Short-circuit railConnects terminals 45 and 46 when the sensor is disconnected.
#21Short-circuit railConnects terminals 45 and 46 when the sensor is disconnected.
#22Short-circuit railConnects terminals 47 and 48 when the sensor is disconnected.
A23Short-circuit railConnects terminals 47 and 48 when the sensor is disconnected.
#24Short-circuit railConnects terminals 49 and 50 when the sensor is disconnected.
#25Short-circuit railConnects terminals 49 and 50 when the sensor is disconnected.
#26#1Seat belt reminder, LED, EUEurope only
#27#2(-) ignition loop, driver's airbag stage 1
#28#3(+) ignition loop, driver's airbag stage 1
#29#4(+) ignition loop, driver's seat belt tensioner
#30#5(-) ignition loop, driver's seat belt tensioner
#31#6(-) ignition loop, passenger seat belt tensioner
#32#7(+) ignition loop, passenger seat belt tensioner
#33#8(+) ignition loop, passenger airbag stage 1
#34#9(-) ignition loop, passenger airbag stage 1
#35#10(-) ignition loop, right SIPS bag
#36#11(+) ignition loop, right SIPS bag
#37#12(+) ignition loop, left SIPS bag
#38#13(-) ignition loop, left SIPS bag
#39#14
#40#15
#41#16
#42#17
#43#18(-) supply, driver's airbag stage 2
#44#19(+) supply, driver's airbag stage 2
#45#20(+) supply, left inflatable curtain
#46#21(-) supply, left inflatable curtain
#47#22(-) supply, right inflatable curtain
#48#23(+) supply, right inflatable curtain
#49#24(+) supply, passenger airbag stage 2
#50#25(-) supply, passenger airbag stage 2
#51#26Seat belt reminder, flasher relay EUOnly US
#52#27Power supply, 15 supplyU bat
#53#28
#54#29Signal, SRS warning lampSRS indicator lamp off = <2 V SRS indicator lamp on = >8 V
#55#30Signal, central locking systemAt collision = <1.4 V Normal = >10 VUnlocks the central locking system after a collision.
#56#31
#57#32Side impact sensor left front, data signal
#58#33Side impact sensor left front, signal ground
#59#34Side impact sensor right front, data signal
#60#35Side impact sensor right front, signal ground
#61#36Side impact sensor left rear, data signal
#62#37Side impact sensor left rear, signal ground
#63#38
#64#39
#65#40
#66#41Side impact sensor right rear, signal ground
#67#42Return cable
#68#43Seat belt buckle, driver's side
#69#44
#70#45Seat belt buckle, front passenger side, return cable
#71#46Signal, driver's seat belt buckle
#72#47Side impact sensor right rear, data signal
#73#48Signal, passenger seat belt buckle front
#74#49Signal, seat belt reminder
#75#50Data Link Connector (DLC)U = 10 V

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