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Occupant Classification System (Diagnostic Codes & Symptom Tests): Other Lexus GS IV

Airbag ~6803 words

PROCEDURE

  1. CHECK FOR DTC Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1771 is not output. HINT: Codes other than DTC B1771 may be output at this time, but they are not related to this check. NG --> See step 2 OK --> See step 11
  2. CHECK CONNECTION OF CONNECTOR Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Check that the connectors are properly connected to the occupant detection ECU. OK Connectors are properly connected. NG --> CONNECT CONNECTOR OK: Go to next step
  3. CHECK CONNECTOR Disconnect the connectors from the occupant detection ECU. Check that the connectors are not damaged. OK Connectors are not deformed or damaged. TEXT IN ILLUSTRATION *1 Front Seat Inner Belt Assembly RH *2 Occupant Detection ECU NG --> See step 10 OK: Go to next step
  4. CHECK FOR DTC Connect the connectors to the occupant detection ECU and front seat inner belt RH. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1771 is not output. HINT: Codes other than DTC B1771 may be output at this time, but they are not related to this check. NG --> See step 5 OK --> See step 9
  5. CHECK FRONT SEAT INNER BELT ASSEMBLY RH Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Replace the front seat inner belt RH. Refer to «REMOVAL [03/2012 - ]»(ref-600659-S00218149932014022400000) . HINT: Perform the inspection using parts from a normal vehicle when possible. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1771 is not output. HINT: Codes other than DTC B1771 may be output at this time, but they are not related to this check. NG --> See step 6 OK --> END (FRONT SEAT INNER BELT ASSEMBLY RH WAS DEFECTIVE)
  6. CHECK OCCUPANT DETECTION ECU Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Replace the occupant detection ECU. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: Perform the inspection using parts from a normal vehicle when possible. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: If the DTCs are not cleared at this time, past DTCs will remain. NEXT: Go to next step
  7. PERFORM ZERO POINT CALIBRATION Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NEXT: Go to next step
  8. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NEXT --> END (OCCUPANT DETECTION ECU WAS DEFECTIVE)
  9. USE SIMULATION METHOD TO CHECK. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000)
  10. REPLACE REAR SEAT INNER BELT ASSEMBLY RH. Refer to «REMOVAL [03/2012 - ]»(ref-600659-S27427737522014022400000)
  11. USE SIMULATION METHOD TO CHECK. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000)
  1. CHECK FOR DTC Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Use the Techstream to clear the DTCs of the occupant detection ECU, otherwise the DTCs cannot be cleared. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1782 is not output. HINT: DTCs other than DTC B1782 may be output at this time, but they are not related to this check. NG --> See step 2 OK --> See step 13
  2. CHECK CONNECTION OF CONNECTOR Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Check that the connectors are properly connected to the occupant detection ECU and rear occupant classification sensor LH. OK Connectors are properly connected. NG --> CONNECT CONNECTOR OK: Go to next step
  3. CHECK CONNECTOR Disconnect the connectors from the occupant detection ECU and rear occupant classification sensor LH. Check that the connectors (on the occupant detection ECU side and rear occupant classification sensor LH side) are not damaged. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000) . OK Connectors are not deformed or damaged. TEXT IN ILLUSTRATION *1 Rear Occupant Classification Sensor LH *2 Occupant Detection ECU *3 Front Seat Inner Belt Assembly RH NG --> See step 14 OK: Go to next step
  4. CHECK FRONT SEAT INNER BELT ASSEMBLY RH Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition z13-1 - Body ground Power switch on (IG) Below 1 V z13-3 - Body ground z13-5 - Body ground Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Using service wires, connect terminals 1 and 3, and terminals 2 and 3 of connector C. NOTE: Do not forcibly insert the service wires into the terminals of the connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition z13-1 - z13-5 Always Below 1 ohms z13-3 - z13-5 Disconnect the service wires from connector C. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition z13-1 - z13-5 Always 1 Mohms or higher z13-3 - z13-5 z13-1 - z13-3 z13-1 - Body ground z13-3 - Body ground z13-5 - Body ground TEXT IN ILLUSTRATION *1 Front Seat Inner Belt Assembly RH *2 Rear Occupant Classification Sensor LH *3 Occupant Detection ECU *4 Service Wire *5 Connector C *6 Connector B *a Front view of wire harness connector (to Rear Occupant Classification Sensor LH) *b Front view of wire harness connector (to Occupant Detection ECU) NG --> See step 14 OK: Go to next step
  5. CHECK FOR DTC Connect the connectors to the occupant detection ECU and rear occupant classification sensor LH. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Use the Techstream to clear the DTCs of the occupant detection ECU, otherwise the DTCs cannot be cleared. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1782 is not output. HINT: DTCs other than DTC B1782 may be output at this time, but they are not related to this check. NG --> See step 6 OK --> See step 13
  6. CHECK OCCUPANT DETECTION ECU Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Replace the occupant detection ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600605-S03598035512014022400000) . HINT: Perform the inspection using parts from a normal vehicle when possible. NEXT: Go to next step
  7. PERFORM ZERO POINT CALIBRATION Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG). Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NG --> See step 10 OK: Go to next step
  8. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NG --> See step 10 OK: Go to next step
  9. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Use the Techstream to clear the DTCs of the occupant detection ECU, otherwise the DTCs cannot be cleared. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1782 is not output. HINT: DTCs other than DTC B1782 may be output at this time, but they are not related to this check. NG --> See step 10 OK --> END (OCCUPANT DETECTION ECU WAS DEFECTIVE)
  10. CHECK FRONT SEAT ADJUSTER ASSEMBLY RH (REAR OCCUPANT CLASSIFICATION SENSOR LH) Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Replace the front seat adjuster assembly RH. for Standard Seat Type. Refer to «REMOVAL [03/2012 - ]»(ref-600608-S36428769182014022400000) for Luxury Seat Type. Refer to «REMOVAL [03/2012 - ]»(ref-600608-S14483777922014022400000) HINT: Perform the inspection using parts from a normal vehicle when possible. NEXT: Go to next step
  11. PERFORM ZERO POINT CALIBRATION Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG). Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NEXT: Go to next step
  12. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NEXT --> END (FRONT SEAT ADJUSTER ASSEMBLY RH [REAR OCCUPANT CLASSIFICATION SENSOR LH] WAS DEFECTIVE)
  13. USE SIMULATION METHOD TO CHECK. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000)
  14. REPLACE FRONT SEAT INNER BELT ASSEMBLY RH. Refer to «REMOVAL [03/2012 - ]»(ref-600659-S00218149932014022400000)
  1. CHECK FOR DTC Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1787 is not output. HINT: DTCs other than DTC B1787 may be output at this time, but they are not related to this check. NG --> See step 2 OK --> See step 12
  2. PERFORM ZERO POINT CALIBRATION Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NG --> See step 5 OK: Go to next step
  3. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NG --> See step 5 OK: Go to next step
  4. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1787 is not output. HINT: DTCs other than DTC B1787 may be output at this time, but they are not related to this check. NG --> See step 5 OK --> END
  5. CHECK FRONT SEAT ADJUSTER ASSEMBLY RH (REAR OCCUPANT CLASSIFICATION SENSOR LH) Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Replace the front seat adjuster assembly RH. for Standard Seat Type. Refer to «REMOVAL [03/2012 - ]»(ref-600608-S36428769182014022400000) for Luxury Seat Type. Refer to «REMOVAL [03/2012 - ]»(ref-600608-S14483777922014022400000) HINT: Perform the inspection using parts from a normal vehicle when possible. NEXT: Go to next step
  6. PERFORM ZERO POINT CALIBRATION Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG). Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NG --> See step 9 OK: Go to next step
  7. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NG --> See step 9 OK: Go to next step
  8. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Use the Techstream to clear the DTCs of the occupant detection ECU, otherwise the DTCs cannot be cleared. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1787 is not output. HINT: DTCs other than DTC B1787 may be output at this time, but they are not related to this check. NG --> See step 9 OK --> END (FRONT SEAT ADJUSTER ASSEMBLY RH [REAR OCCUPANT CLASSIFICATION SENSOR LH] WAS DEFECTIVE)
  9. CHECK OCCUPANT DETECTION ECU Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Replace the occupant detection ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600605-S03598035512014022400000) . HINT: Perform the inspection using parts from a normal vehicle when possible. NEXT: Go to next step
  10. PERFORM ZERO POINT CALIBRATION Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG). Perform the zero point calibration. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000) . OK "Zero Point Calibration is complete." is displayed. NEXT: Go to next step
  11. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NEXT --> END (OCCUPANT DETECTION ECU WAS DEFECTIVE)
  12. USE SIMULATION METHOD TO CHECK. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000)
  1. CHECK FOR DTC Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1788 is not output. HINT: DTCs other than DTC B1788 may be output at this time, but they are not related to this check. NG --> See step 2 OK --> See step 12
  2. PERFORM ZERO POINT CALIBRATION Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NG --> See step 5 OK: Go to next step
  3. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NG --> See step 5 OK: Go to next step
  4. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1788 is not output. HINT: DTCs other than DTC B1788 may be output at this time, but they are not related to this check. NG --> See step 5 OK --> END
  5. CHECK FRONT SEAT ADJUSTER ASSEMBLY RH (REAR OCCUPANT CLASSIFICATION SENSOR RH) Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Replace the front seat adjuster assembly RH. for Standard Seat Type. Refer to «REMOVAL [03/2012 - ]»(ref-600608-S36428769182014022400000) for Luxury Seat Type. Refer to «REMOVAL [03/2012 - ]»(ref-600608-S14483777922014022400000) HINT: Perform the inspection using parts from a normal vehicle when possible. NEXT: Go to next step
  6. PERFORM ZERO POINT CALIBRATION Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG). Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NG --> See step 9 OK: Go to next step
  7. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NG --> See step 9 OK: Go to next step
  8. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Use the Techstream to clear the DTCs of the occupant detection ECU, otherwise the DTCs cannot be cleared. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1788 is not output. HINT: DTCs other than DTC B1788 may be output at this time, but they are not related to this check. NG --> See step 9 OK --> END (FRONT SEAT ADJUSTER ASSEMBLY RH [REAR OCCUPANT CLASSIFICATION SENSOR RH] WAS DEFECTIVE)
  9. CHECK OCCUPANT DETECTION ECU Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Replace the occupant detection ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600605-S03598035512014022400000) . HINT: Perform the inspection using parts from a normal vehicle when possible. NEXT: Go to next step
  10. PERFORM ZERO POINT CALIBRATION Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG), and wait for at least 60 seconds. Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NEXT: Go to next step
  11. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NEXT --> END (OCCUPANT DETECTION ECU WAS DEFECTIVE)
  12. USE SIMULATION METHOD TO CHECK. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000)
  1. CHECK FOR DTC Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Use the Techstream to clear the DTCs of the occupant detection ECU, otherwise the DTCs cannot be cleared. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1793 is not output. HINT: DTCs other than DTC B1793 may be output at this time, but they are not related to this check. NG --> See step 2 OK --> See step 13
  2. CHECK CONNECTION OF CONNECTOR Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Check that the connectors are properly connected to the occupant detection ECU and rear occupant classification sensor LH and RH. OK Connectors are properly connected. NG --> CONNECT CONNECTOR OK: Go to next step
  3. CHECK CONNECTOR Disconnect the connectors from the occupant detection ECU and rear occupant classification sensor LH and RH. Check that the connectors (on the occupant detection ECU side and rear occupant classification sensor LH and RH side) are not damaged. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000) . OK Connectors are not deformed or damaged. TEXT IN ILLUSTRATION *1 Rear Occupant Classification Sensor LH *2 Rear Occupant Classification Sensor RH *3 Occupant Detection ECU NG --> See step 14 OK: Go to next step
  4. CHECK FRONT SEAT INNER BELT ASSEMBLY RH Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. TEXT IN ILLUSTRATION *1 Front Seat Inner Belt Assembly RH *2 Rear Occupant Classification Sensor LH *3 Rear Occupant Classification Sensor RH *4 Occupant Detection ECU *5 Connector B *6 Connector C *7 Connector E - - *a Front view of wire harness connector (to Occupant Detection ECU) *b Front view of wire harness connector (to Rear Occupant Classification Sensor LH) *c Front view of wire harness connector (to Rear Occupant Classification Sensor RH) - - Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition z13-1 - Body ground Power switch on (IG) Below 1 V z13-2 - Body ground Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition z13-1 - 1 Always Below 1 ohms z13-2 - 1 z13-1 - z13-2 Always 1 Mohms or higher z13-1 - Body ground z13-2 - Body ground NG --> See step 14 OK: Go to next step
  5. CHECK FOR DTC Connect the connectors to occupant detection ECU and rear occupant classification sensor LH and RH. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Use the Techstream to clear the DTCs of the occupant detection ECU, otherwise the DTCs cannot be cleared. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1793 is not output. HINT: DTCs other than DTC B1793 may be output at this time, but they are not related to this check. NG --> See step 6 OK --> See step 13
  6. CHECK OCCUPANT DETECTION ECU Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Replace the occupant detection ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600605-S03598035512014022400000) . HINT: Perform the inspection using parts from a normal vehicle when possible. NEXT: Go to next step
  7. PERFORM ZERO POINT CALIBRATION Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG). Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NG --> See step 10 OK: Go to next step
  8. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NG --> See step 10 OK: Go to next step
  9. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Use the Techstream to clear the DTCs of the occupant detection ECU, otherwise the DTCs cannot be cleared. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1793 is not output. HINT: DTCs other than DTC B1793 may be output at this time, but they are not related to this check. NG --> See step 10 OK --> END (OCCUPANT DETECTION ECU WAS DEFECTIVE)
  10. CHECK FRONT SEAT ADJUSTER ASSEMBLY RH (REAR OCCUPANT CLASSIFICATION SENSOR LH AND RH) Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Replace the front seat adjuster assembly RH. for Standard Seat Type. Refer to «REMOVAL [03/2012 - ]»(ref-600608-S36428769182014022400000) for Luxury Seat Type. Refer to «REMOVAL [03/2012 - ]»(ref-600608-S14483777922014022400000) HINT: Perform the inspection using parts from a normal vehicle when possible. NEXT: Go to next step
  11. PERFORM ZERO POINT CALIBRATION Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG). Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NEXT: Go to next step
  12. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NEXT --> END (FRONT SEAT ADJUSTER ASSEMBLY RH WAS DEFECTIVE)
  13. USE SIMULATION METHOD TO CHECK. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000)
  14. REPLACE FRONT SEAT INNER BELT ASSEMBLY RH. Refer to «REMOVAL [03/2012 - ]»(ref-600659-S00218149932014022400000)
  1. CHECK FOR DTC Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Use the Techstream to clear the DTCs of the occupant detection ECU, otherwise the DTCs cannot be cleared. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1794 is not output. HINT: DTCs other than DTC B1794 may be output at this time, but they are not related to this check. NG --> See step 2 OK --> See step 9
  2. CHECK CONNECTION OF CONNECTOR Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Check that the connectors are properly connected to the center airbag sensor, rear occupant classification sensor LH and RH and occupant detection ECU. OK Connectors are properly connected. NG --> CONNECT CONNECTOR OK: Go to next step
  3. CHECK CONNECTOR Disconnect the connector from the occupant detection ECU. Check that the connectors (on the occupant detection ECU side) are not damaged. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000) . OK Connectors are not deformed or damaged. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (SOURCE VOLTAGE AND BODY GROUND) Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition z12-1 (+B) - Body ground Always 11 to 14 V z12-6 (IG) - Body ground Power switch on (IG) Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition z12-3 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Occupant Detection ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. CHECK FOR DTC Connect the connectors to the occupant detection ECU. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Use the Techstream to clear the DTCs of the occupant detection ECU, otherwise the DTCs cannot be cleared. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1794 is not output. HINT: DTCs other than DTC B1794 may be output at this time, but they are not related to this check. NG --> See step 6 OK --> See step 9
  6. CHECK OCCUPANT DETECTION ECU Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Replace the occupant detection ECU. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000) . HINT: Perform the inspection using parts from a normal vehicle when possible. NEXT: Go to next step
  7. PERFORM ZERO POINT CALIBRATION Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG). Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NEXT: Go to next step
  8. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NEXT --> END (OCCUPANT DETECTION ECU WAS DEFECTIVE)
  9. USE SIMULATION METHOD TO CHECK. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000)
  1. CHECK FOR DTC Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Use the Techstream to clear the DTCs of the occupant detection ECU, otherwise the DTCs cannot be cleared. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1795 is not output. HINT: DTCs other than DTC B1795 may be output at this time, but they are not related to this check. NG --> See step 2 OK --> See step 5
  2. CHECK OCCUPANT DETECTION ECU Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Replace the occupant detection ECU. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: Perform the inspection using parts from a normal vehicle when possible. NEXT: Go to next step
  3. PERFORM ZERO POINT CALIBRATION Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG). Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NEXT: Go to next step
  4. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NEXT --> END (OCCUPANT DETECTION ECU WAS DEFECTIVE)
  5. USE SIMULATION METHOD TO CHECK. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000)
  1. CHECK FOR DTC Turn the power switch on (IG), and wait for at least 60 seconds. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor. Use the Techstream to clear the DTCs of the occupant detection ECU, otherwise the DTCs cannot be cleared. Turn the power switch off. Turn the power switch on (IG), and wait for at least 60 seconds. Check for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . OK DTC B1796 is not output. HINT: DTCs other than DTC B1796 may be output at this time, but they are not related to this check. NG --> See step 2 OK --> See step 5
  2. CHECK OCCUPANT DETECTION ECU Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Replace the occupant detection ECU. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600447-S14231737302014022400000) . HINT: Perform the inspection using parts from a normal vehicle when possible. NEXT: Go to next step
  3. PERFORM ZERO POINT CALIBRATION Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG). Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NEXT: Go to next step
  4. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NEXT --> END (OCCUPANT DETECTION ECU WAS DEFECTIVE)
  5. USE SIMULATION METHOD TO CHECK. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000)
  1. CHECK SRS WARNING LIGHT Turn the power switch on (IG), 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 power switch is turned on (IG). NG --> See step 18 OK: Go to next step
  2. CHECK CONNECTOR Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Check that the connectors (on the occupant detection ECU side and rear occupant classification sensor LH and RH side) are not damaged. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000) . OK Connectors are not deformed or damaged. NG --> See step 19 OK: Go to next step
  3. PERFORM ZERO POINT CALIBRATION Turn the power switch off. Connect the Techstream to the DLC3. Turn the power switch on (IG). Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NG --> See step 6 OK: Go to next step
  4. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NG --> See step 6 OK: Go to next step
  5. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION Turn the power switch on (IG). 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 6 OK --> END
  6. RETIGHTEN FRONT SEAT ADJUSTER ASSEMBLY RH BOLT Turn the power switch off. Loosen the 4 installation bolts of the front seat adjuster assembly RH. Tighten the 4 installation bolts of the front seat adjuster assembly RH to the specified torque. for Standard Seat Type. Refer to «REMOVAL [03/2012 - ]»(ref-600608-S36428769182014022400000) for Luxury Seat Type. Refer to «REMOVAL [03/2012 - ]»(ref-600608-S14483777922014022400000) Torque: 37 N*m (377 kgf*cm, 27 ft.*lbf) NEXT: Go to next step
  7. PERFORM ZERO POINT CALIBRATION Turn the power switch on (IG). Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NG --> See step 9 OK: Go to next step
  8. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NG --> See step 9 OK --> END
  9. READ VALUE USING TECHSTREAM (FRONT PASSENGER SIDE SEAT BELT BUCKLE SWITCH) Using the Techstream, read the Data List. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . 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 14 OK: Go to next step
  10. READ VALUE USING TECHSTREAM (FRONT PASSENGER SIDE SEAT CONDITION) Using the Techstream, read the Data List. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OCCUPANT DETECTION Tester Display Measurement Item/Range Normal Condition Diagnostic Note Passenger Classification Front passenger side seat condition / AM50, AF05, Child or OFF AM50: Adult (more than 54 kg [119.1 lb]) seated AF05: Adult (36 to 54 kg [79.4 to 119.1 lb]) seated Child: Child (less than 36 kg [79.4 lb]) seated OFF: Vacant - OK The display is as specified in the normal condition column. NG --> See step 20 OK: Go to next step
  11. CHECK FRONT SEAT ADJUSTER ASSEMBLY RH Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Replace the front seat adjuster assembly RH. for Standard Seat Type. Refer to «REMOVAL [03/2012 - ]»(ref-600608-S36428769182014022400000) for Luxury Seat Type. Refer to «REMOVAL [03/2012 - ]»(ref-600608-S14483777922014022400000) HINT: Perform the inspection using parts from a normal vehicle when possible. NEXT: Go to next step
  12. PERFORM ZERO POINT CALIBRATION Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG). Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NEXT: Go to next step
  13. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NEXT --> END (FRONT SEAT ADJUSTER ASSEMBLY RH WAS DEFECTIVE)
  14. CHECK CONNECTOR Turn the power switch off. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds. Disconnect the connectors from the occupant detection ECU and front seat inner belt RH. Check that the connectors (on the occupant detection ECU side and front seat inner belt RH side) are not damaged. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK Connectors are not deformed or damaged. NG --> REPLACE FRONT SEAT INNER BELT ASSEMBLY RH OK: Go to next step
  15. CHECK FRONT SEAT INNER BELT ASSEMBLY RH Replace the front seat inner belt RH. Refer to «DIAGNOSIS SYSTEM [03/2012 - ]»(ref-600447-S30509936882014022400000) . HINT: Perform the inspection using parts from a normal vehicle when possible. NEXT: Go to next step
  16. PERFORM ZERO POINT CALIBRATION Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds. Turn the power switch on (IG). Perform the zero point calibration. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . OK "Zero Point Calibration is complete." is displayed. NEXT: Go to next step
  17. PERFORM SENSITIVITY CHECK Perform the sensitivity check. Refer to «INITIALIZATION [03/2012 - ]»(ref-600447-S01415728602014022400000) . Standard 27 to 33 kg (59.5 to 72.8 lb) NEXT --> END (FRONT SEAT INNER BELT ASSEMBLY RH WAS DEFECTIVE)
  18. GO TO AIRBAG SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-600414-S04503868552014022400000)
  19. REPLACE FRONT SEAT INNER BELT ASSEMBLY RH. Refer to «REMOVAL [03/2012 - ]»(ref-600659-S00218149932014022400000)
  20. REPLACE OCCUPANT DETECTION ECU. Refer to «REMOVAL [03/2012 - ]»(ref-600605-S03598035512014022400000)

More articles — Occupant Classification System (Diagnostic Codes & Symptom Tests)