Trouble in Passenger Airbag ON/OFF Indicator: Procedure

1. Turn the ignition switch to ON and check the SRS warning light condition.

   HINT: 

   If this trouble occurs, the SRS warning light is off. If the light is on, this indicates that a DTC is stored. Troubleshoot for the output DTC.

   OK

   After the primary check period, the SRS warning light goes off.

   HINT: 

   The primary check is performed for approximately 6 seconds after the ignition switch is turned to ON.

NG → See step   21 

OK: Go to next step 

1. Turn the ignition switch off.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to ON, and wait for at least 60 seconds.
4. Using the Techstream, perform the zero point calibration. Refer to INITIALIZATION .

   OK

   "Zero Point Calibration is complete." is displayed.

NG → See step   5 

OK: Go to next step 

1. Using the Techstream, perform the sensitivity check. Refer to INITIALIZATION .

   Standard range

   27 to 33 kg (59.5 to 72.8 lb)

NG → See step   5 

OK: Go to next step 

1. Turn the ignition switch to ON.
2. Check if the passenger airbag ON/OFF indicator correctly indicates the front passenger seat condition.

   OK

   Front Passenger Seat Condition	ON Indicator	OFF Indicator
   Vacant	Off	Off
   Adult is seated	On	Off
   Child is seated	Off	On
   Front passenger occupant classification system failure	Off	On

NG → See step   5 

OK → END 

1. Turn the ignition switch off.
2. Loosen the 4 installation bolts of the front seat RH.
3. for Manual Seat:
   1. Tighten the 4 installation bolts of the front seat RH to the specified torque. Refer to INSTALLATION .
4. for Power Seat:
   1. Tighten the 4 installation bolts of the front seat RH to the specified torque. Refer to INSTALLATION .

   Torque: 37 N*m (377 kgf*cm, 27 ft.*lbf) 

NEXT: Go to next step 

1. Turn the ignition switch to ON, and wait for at least 60 seconds.
2. Using the Techstream, perform the zero point calibration. Refer to INITIALIZATION .

   OK

   "Zero Point Calibration is complete." is displayed.

NG → See step   8 

OK: Go to next step 

1. Using the Techstream, perform the sensitivity check. Refer to INITIALIZATION .

   Standard range

   27 to 33 kg (59.5 to 72.8 lb)

NG → See step   8 

OK → END 

1. Using the Techstream, read the Data List. Refer to DATA LIST / ACTIVE TEST .
   OCCUPANT DETECTION
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Passenger Buckle SW	Front passenger side seat belt buckle switch / Unset, Set or NG	Unset: Front passenger side seat belt unfastened Set: Front passenger side seat belt fastened NG: Condition undetermined	-

   OK

   The display is as specified in the normal condition column.

NG → See step   17 

OK: Go to next step 

1. Turn the ignition switch off.
2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
3. for Manual Seat:
   1. Replace the separate type front seat cushion spring RH. Refer to DISASSEMBLY .
4. for Power Seat:
   1. Replace the separate type front seat cushion spring RH. Refer to DISASSEMBLY .

   HINT: 

   Perform the inspection using parts from a normal vehicle when possible.

NEXT: Go to next step 

1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
2. Turn the ignition switch to ON, and wait for at least 60 seconds.
3. Using the Techstream, perform the zero point calibration. Refer to INITIALIZATION .

   OK

   "Zero Point Calibration is complete." is displayed.

NG → See step   12 

OK: Go to next step 

1. Using the Techstream, perform the sensitivity check. Refer to INITIALIZATION .

   Standard range

   27 to 33 kg (59.5 to 72.8 lb)

NG → See step   12 

OK → END 

1. Turn the ignition switch off.
2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
3. Check that the connectors (on the occupant classification ECU side and occupant classification sensor side) are not damaged. Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE .

   OK

   Connectors are not deformed or damaged.

NG → REPLACE FRONT SEAT WIRE RH 

OK: Go to next step 

1. Connect the connectors to the occupant classification ECU and 4 occupant detection sensors.
2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
3. Turn the ignition switch to ON, and wait for at least 60 seconds.
4. Clear the DTCs stored in memory. Refer to DTC CHECK / CLEAR .

   HINT: 

   • First clear the DTCs stored in the occupant classification ECU, and then clear the DTCs stored in the center airbag sensor.
   • Use the Techstream to clear the DTCs of the occupant classification ECU, otherwise the DTCs cannot be cleared.
5. Turn the ignition switch off.
6. Turn the ignition switch to ON, and wait for at least 60 seconds.
7. Using the Techstream, check for DTCs of the occupant classification ECU. Refer to DTC CHECK / CLEAR .

   OK

   DTC is not output.

NG → See step   22 

OK: Go to next step 

1. Connect the connectors to the 4 occupant classification sensors.
2. Replace the occupant classification ECU. Refer to REMOVAL .

   HINT: 

   Perform the inspection using parts from a normal vehicle when possible.

NEXT: Go to next step 

1. Turn the ignition switch to ON, and wait for at least 60 seconds.
2. Using the Techstream, perform the zero point calibration. Refer to INITIALIZATION .

   OK

   "Zero Point Calibration is complete." is displayed.

NEXT: Go to next step 

1. Using the Techstream, perform the sensitivity check. Refer to INITIALIZATION .

   Standard range

   27 to 33 kg (59.5 to 72.8 lb)

NEXT → END 

1. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
2. Turn the ignition switch off.
3. Disconnect the connectors from the occupant classification ECU and front seat inner belt RH.
4. Check that the connectors (on the occupant classification ECU side and front seat inner belt RH side) are not damaged. Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE .

   OK

   Connectors are not deformed or damaged.

NG → REPLACE FRONT SEAT WIRE RH 

OK: Go to next step 

1. Replace the front seat inner belt RH. Refer to REMOVAL .

NEXT: Go to next step 

1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
2. Turn the ignition switch to ON, and wait for at least 60 seconds.
3. Using the Techstream, perform the zero point calibration. Refer to INITIALIZATION .

   OK

   "Zero Point Calibration is complete." is displayed.

NEXT: Go to next step 

1. Using the Techstream, perform the sensitivity check. Refer to INITIALIZATION .

   Standard range

   27 to 33 kg (59.5 to 72.8 lb)

NEXT → END