SRS Control Module (SRSCM) Repair Procedures

Removal

1. 1
   Remove the ignition key from the vehicle.
2. 2
   Disconnect the negative battery cable and wait at least three minutes before starting work.
3. 3
   Remove the floor console. (Refer to Body - "Floor Console Assembly")
4. 4
   Remove the center console channel (A) after loosening the mounting nut.

   

5. 5
   Disconnect the SRSCM connectors.

   

6. 6
   Remove the SRSCM (A) after loosening the mounting nuts.

   

Installation

1. 1
   Remove the ignition key from the vehicle.
2. 2
   Disconnect the negative battery cable and wait at least three minutes before starting work.
3. 3
   Install the SRSCM (A) using the SRSCM mounting nuts.

   Tightening torque: 7.8 ~ 9.8 N·m

   

4. 4
   Connect the SRSCM wiring harness connectors.
5. 5
   Install the heater ducts and floor console. (Refer to Body - "Floor Console Assembly")
6. 6
   Connect the negative battery cable.
7. 7
   After installing the SRSCM, check system operation: Turn the ignition ON; the SRS indicator should illuminate for about six seconds, then go off.

   If the SRSCM is always replaced, perform variant coding. In addition, perform the G-sensor zero point setting. (Refer to Brake System - "Yaw Rate and Lateral G Sensor")

Variant Coding

1 In variant coding mode, the SRSCM airbag warning lamp blinks periodically (ON: 0.5 s, OFF: 0.5 s) until the coding is completed normally. 2 If variant coding fails, DTC B176200 (ACU coding error) will be displayed and the warning lamp will illuminate. In this case, repeat the variant coding procedure after confirming the cause in "DTC Fault State Information". Variant coding can be performed up to 255 times; if the number of coding operations exceeds 255, DTC B168300 (maximum code number exceeded) will be displayed and the SRSCM must be replaced. 3 If the battery voltage is low (less than 9 V), DTC B110200 will be displayed. In this case, charge the battery before doing anything else, then perform the variant coding procedure. DTC B176200 (ACU Coding Error) and B110200 (Low Battery Voltage) may be displayed at the same time.

¦ Online Type in GDS

1. 1
   Turn the ignition off.
2. 2
   Connect the GDS.
3. 3
   Turn the ignition ON with the engine OFF.
4. 4
   Select the vehicle name and the airbag system.
5. 5
   Select the variant coding mode.
6. 6
   Follow the on-screen instructions below.

   1. ACU Variant Coding Start Screen

      

   2. VIN Input Screen

      

   3. Variant Coding Working Screen-1

      

   4. Variant Coding Working Screen-2

      

   5. Variant Coding Completed

      

1 This screen is displayed when you attempt to perform variant coding on an SRSCM that has already been coded. 2 This screen is displayed when a communication failure occurs.

1. 1
   Turn the ignition off.
2. 2
   Connect the GDS.
3. 3
   Turn the ignition ON with the engine OFF.
4. 4
   Select the vehicle name and the airbag system.
5. 5
   Select the variant coding mode.
6. 6
   Follow the on-screen instructions below.

   1. ACU Variant Coding Start Screen

      

   2. ACU Coding Code Input Screen

      

   3. ACU Coding Code Input Screen Re-check

      

   4. Variant Coding Working Screen-1

      

   5. Variant Coding Working Screen-2

      

   6. Variant Coding Completed

      

      This screen is displayed when you attempt to perform variant coding on an SRSCM that has already been coded.