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SRS AIR BAG DIAGNOSIS TSB Revision SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-231 STEP 4. Check the driver's seat belt pre-tensioner. harness side connector, turn the lock lever to the direction (3) Disconnect driver's seat belt pre-tensioner connector D-25. Use a flat-tipped screwdriver to unlock the locking button at (4) Connect special tool MB991865 to special tool MB991884. connector. (6) Connect the negative battery terminal. diagnostic trouble code. Q: Is DTC B1C3B set? YES : Go to Step 5. (Refer to ). Then go to Step 7. AC507645 A AC Lock lever AC608959 AC Pre-tensioner Harness side Locking Flat-tipped AC301553CB D-25 Harness side MB991884 (Resistor harness) MB991865 (Dummy resistor: 3 ) |