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REMOVAL AND INSTALLATION
 
 
danger
  • The SRS-ECU adopts the rollover specification that the curtain air bag and seat belt pre-tensioner operate at the occurrence of rollover. Therefore, do not tilt the vehicle to the right and left with the ignition switch "ON" or tilt the SRS-ECU to the right and left with the ignition switch "ON" and the harness installed.
warning
  • Never connect the negative battery terminal when the SRS-ECU is not installed securely. If you fail to follow this instruction, the air bag may deploy unintentionally, possibly causing a serious injury.
  • Never attempt to disassemble or repair the SRS-ECU. If faulty, replace it.
  • Do not drop or subject the SRS-ECU to impact or vibration. If denting, cracking, deformation, or rust are discovered in the SRS-ECU, replace it with a new SRS-ECU.
  • After deployment of an air bag, replace the SRS-ECU with a new one.
  • Never use an ohmmeter on or near the SRS-ECU, and use only the special test equipment described here .
caution
  • When the SRS-ECU is replaced, VIN writing and coding must be performed. When DTC B1496 SRS-ECU non-volatile memory (EEPROM), U1199 "VIN not programmed" or U1195 "Coding not completed" is set in the SRS-ECU, diagnose each diagnostic trouble code.
Pre-removal operation
Turn the ignition switch to the "LOCK" (OFF) position.
Removal steps
<<A>>1.Negative (-) battery cable
•Floor console side cover (Refer to GROUP 52A - Floor Console Assembly ).
2.SRS-ECU mounting bolt (ground bolt)
3.SRS-ECU mounting bolt
4.SRS-ECU
5.Control unit cover
Installation steps
•Disconnect the negative (-) battery terminal.
5.Control unit cover
>>A<<4.SRS-ECU
3.SRS-ECU mounting bolt
>>B<<2.SRS-ECU mounting bolt (ground bolt)
•Floor console side cover (Refer to GROUP 52A - Floor Console Assembly ).
1.Negative (-) battery cable
>>C<<•Post-installation inspection
 
 
REMOVAL SERVICE POINT
 
 
<<A>> NEGATIVE (-) BATTERY CABLE DISCONNECTION
dangerWait at least 60 seconds after disconnecting the battery cable before doing any further work (Refer to ).
warningBattery posts, terminals and related accessories contain lead and lead compounds. WASH HANDS AFTER HANDLING.
Disconnect the negative (-) battery cable from the battery and tape the terminal to prevent accidental connection and air bag(s) deployment.
 
 
 
 
INSTALLATION SERVICE POINTS
 
 
>>A<< SRS-ECU INSTALLATION
cautionIf SRS-ECU is not securely and correctly installed, the correct operation of SRS air bag is prevented.
 

 
 
>>B<< SRS-ECU MOUNTING BOLT (GROUND BOLT) INSTALLATION
Check the head mark "E" and install the ground bolt.
 

 
 
>>C<< POST-INSTALLATION INSPECTION
1. Connect the negative (-) battery cable.
2. Turn the ignition switch to the "ON" position.
3. Check that the SRS warning light is illuminated for 6 to 8 seconds, and extinguished afterward.
4. If the light does not extinguish, perform the troubleshooting (Refer to ).