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SRS AIR BAG DIAGNOSIS TSB Revision SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-223 STEP 2. Recheck for diagnostic trouble code. YES : Go to Step 3. engaged connector(s) or open circuit (Refer to ). STEP 3. Check the lap pre-tensioner. (Using scan tool flat-tipped screwdriver to unlock the locking button at the (3) Connect special tool MB991865 to special tool MB991884. connector. (5) Connect the negative battery terminal. diagnostic trouble code. Q: Is DTC B1C33 set? YES : Go to Step 4. Refer to ZC501967 AC404789 AC701411AB MB991824 MB991827 MB991910 Data link AC701629 AB Harness side Locking button Flat-tipped Lap pre-tensioner AC301553 BE Harness side MB991865 (Dummy resistor: 3 ) MB991884 (Resistor harness) |