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TROUBLESHOOTING SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-91 DIAGNOSIS PROCEDURE STEP 1. Check the diagnosis code by connecting AC501889 AC511604 AD Harness side Connectors: D-23 <LHD>, D-15 <RHD> D-15 (B) Centre pillar D-23 (B) AC300147AV Seat belt Flat-tipped Locking button Harness side connector (2) Disconnect seat belt pre-tensioner (passenger's side) connector D-23 <LHD> or D-15 <RHD>. AC501975 MB991865 (Dummy resistor : 3 ) MB991884 AF Harness (3) Connect special tool dummy resistor (MB991865) to special tool resistor harness (MB991884). (4) Connect special tool (MB991884) to the D-23 <LHD> or D-15 <RHD> harness side connector. (5) Connect the negative battery terminal. the diagnosis code. Q: Is diagnosis code B1612 set? YES : Go to Step 2. NO : Replace the seat belt with pre-tensioner STEP 2. Voltage measurement at the SRS-ECU AC501670 AC C-130 (Y) Connector: C-130 Harness side (2) Disconnect SRS-ECU connector C-130. AC501889 AC511604 AD Harness side Connectors: D-23 <LHD>, D-15 <RHD> D-15 (B) Centre pillar D-23 (B) AC300147AV Seat belt Flat-tipped Locking button Harness side connector DANGER To prevents the seat belt pre-tensioner from (3) Disconnect seat belt pre-tensioner (passenger's side) connector D-23 <LHD> or D-15 <RHD>. |