My car showed SRS warning lamp. I use M.U.T.-III connect ecu for check error code. The result is problem at clock spring unit. The SRS-ECU diagnoses the following items and stores a diagnosis code in the non-volatile memory (EEPROM*1) when a problem is detected. Therefore, the memory is not deleted after a battery terminal is disconnected. (The diagnosis code memory can be deleted by the M.U.T.-III).
|SRS warning lamp still show (Upper from Mitsubishi manual)|
If the SRS lamp still show after start engine the air bag and seat belt with pre-tensioner system will not work. So it's very dangerous when a crash.
Clock spring is???
The clock spring set up between the steering column and steering wheel. And function is a special rotary electric connection between SRS ECU and air bag module. Because air bag module locate on steering wheel and it make streering wheel turn around.
|Clock spring position (Mitsubishi manual)|
I change clock spring part at Mitsubishi service center. And I disassemble it shown with lower picture. The clock spring consist ribbon cable, connector and rotary part for keep ribbon cable.
|Clock spring (Upper) Inside clock spring (Lower)|
Caution on clock spring
CAUTION: SRS CLOCK SPRING PLEASE DO NOT TURN EXCEPT WHEN REQUIRED. THIS IS NOT A REPAIRABLE PART. IF DEFECTIVE, PLEASE REPLACE ENTIRE UNIT ACCORDING TO THE SERVICE MANUAL INSTRUCTIONS. ALIGNMENT OF MODULES IS NECESSALY WHEN THEY ARE ADJUSTED AND/OR INSTALLED FOR THE ALIGNMENT PROCEDURES, FOLLOW THE SERVICE MANUAL INSTRUCTIONS.
Remark :When remove SRS system part must disconnect battery terminal before.
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