Inspection Procedure

PERFORM ACTIVE TEST BY LEXUS HAND-HELD TESTER
1. Check driver's seat belt warning operation.
1. Connect LEXUS hand-held tester to DLC3.
2. Turn the ignition switch ON and push LEXUS hand-held tester main switch ON.
3. Select the ACTIVE TEST mode on LEXUS hand-held tester.
4. Check that the driver's seat belt warning operation.
1. NG: CHECK AND REPLACE COMBINATION METER ASSY
2. OK: GO TO STEP 2 .
READ VALUE OF LEXUS HAND-HELD TESTER
1. Check output value of driver's side buckle switch.
1. Connect LEXUS hand-held tester to DLC3.
2. Turn the ignition switch ON and push LEXUS hand-held tester main switch ON.
3. Select the DATA LIST mode on LEXUS hand-held tester.
4. Check that the driver's side buckle switch using DATA LIST.
1. OK: Go to step 5
2. NG: Go to step 3 .
INSPECT FRONT SEAT INNER BELT ASSY LH
1. Check continuity.
1. Disconnect the connector of front seat belt inner belt LH.
2. Check continuity between terminal 1 and 3 when buckle switch condition as shown in the Fig 1 .
  OK:
  
  Fig 1: Continuity Reference Table - Front Seat Inner Belt Assy., LH
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 2: Identifying Front Seat Inner Belt Assy. (LH) Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE FRONT SEAT INNER BELT ASSY LH
2. OK: GO TO STEP 4 .
CHECK HARNESS AND CONNECTOR (BETWEEN FRONT SEAT INNER BELT AND DRIVER SIDE J/B ECU)
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: CHECK AND REPLACE DRIVER SIDE JUNCTION BLOCK
CHECK THAT MALFUNCTION DISAPPEARS A KNOWN GOOD COMBINATION METER IS INSTALLED
1. Check that malfunction disappears when a known good combination meter is installed.
  
  Fig 3: Combination Meter Malfunction Reference Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. A: CHECK AND REPLACE DRIVER SIDE JUNCTION BLOCK
2. B: CHECK AND REPLACE COMBINATION METER ASSY