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
   Lift the lock (C) of the SRSCM connector, then disconnect the connectors (A and B).

   

5. 5
   Remove the SRSCM mounting bolt and nuts from the SRSCM, then remove the SRSCM.

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 using the SRSCM mounting bolt and nuts.

   Tightening torque 9.8 ~ 13.7 N·m

   

   Use new mounting bolts when replacing the SRSCM after a collision. When installing the SRSCM bolt, install the ground wire (B) with the bolt as shown in the figure above.

4. 4
   Connect the SRSCM wiring harness connector.
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, verify that the system operates correctly:

   A.	Turn the ignition ON; the SRS indicator should illuminate for approximately six seconds, then turn off.

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 B1762 (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, but if the number of coding operations exceeds 255, DTC B1683 (Maximum Coding Count Exceeded) will be displayed and the SRSCM must be replaced. 3 If the battery voltage is low (less than 9 V), DTC B1102 will be displayed. In this case, first charge the battery, and then perform the variant coding procedure. DTC B1762 (ACU Coding Error) and B1102 (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.