Airbag / SRS Module

What does this module do?

The SRS module monitors the firing circuits of the airbags and belt pretensioners, the crash sensors and the belt switches. Circuit resistances must stay inside a narrow window; a value outside it is stored as a code.

Safety-critical module

CarCoding marks this module as safety-critical. The reason: opening an extended diagnostic session on this module temporarily disables the system on some vehicles and turns on a warning lamp. The behaviour is the same with the manufacturer’s own tool — it comes from the nature of the protocol and is not a scanner fault.

What do the makes call this module?

The name of a module doing the same job changes from make to make. The names below are the actual definition names used under this type in the CarCoding scan map (54 distinct names):

Which makes define it?

The map holds 95 definitions for this type, spread across 38 make groups:

• Audi19 definitions
• Volkswagen19 definitions
• FCA5 definitions
• Fiat5 definitions
• Toyota4 definitions
• GWM3 definitions
• Jaguar Land Rover3 definitions
• Ford2 definitions
• GM2 definitions
• Lada2 definitions
• Li Auto2 definitions
• Renault2 definitions
• Subaru2 definitions
• BMW1 definitions
• BYD1 definitions
• Changan1 definitions
• Chery1 definitions
• Dongfeng1 definitions
• FAW1 definitions
• GAC1 definitions
• Geely1 definitions
• GENERIC1 definitions
• Honda1 definitions
• Hongqi1 definitions
• Hyundai1 definitions
• Isuzu1 definitions
• JAC1 definitions
• Mazda1 definitions
• Mercedes-Benz1 definitions
• MG1 definitions
• Mitsubishi1 definitions
• Nissan1 definitions
• Opel1 definitions
• PSA1 definitions
• SsangYong1 definitions
• Suzuki1 definitions
• UAZ1 definitions
• Volvo1 definitions

Address and protocol

Every definition in the map is marked as UDS. 53 of the addresses are 11-bit CAN identifiers (three digits, such as 7E0) and 42 are 29-bit extended identifiers (such as 18DA10F1). The most frequent addresses for this type are: 737 (6), 18DAC0F1 (4), 744 (4), 752 (4).

Related fault codes

Fault codes stored in this module usually belong to these groups:

• Airbag (SRS)Airbag / SRS

Looking for what a fault code means? Fault code library.

Other module types

• Seat Module177 definitions
• High-Voltage System Modules153 definitions
• Body Control Module126 definitions
• Door Module121 definitions
• Steering Module119 definitions
• Climate Control Module117 definitions
• Transmission Control Unit117 definitions
• High-Voltage Battery Module106 definitions

← All ECU modules

Data source: the CarCoding ECU scan map (ecuDatabase.ts). The addresses and names in the table are definitions from the map; they can differ depending on the hardware and software version in your vehicle.