SUPPLEMENTL RESTRINT SYSTEM OUPNT LSSIFITION SYSTEM 281 T 1782 ircuit Malfunction ESRIPTION The rear occupant classification sensor LH circuit consists of the occupant classification and the rear occupant classification sensor LH. T 1782 is recorded when a malfunction is detected in the rear occupant classification sensor LH circuit. T No. T etecting ondition Trouble rea 1782 WIRI IGRM classification detects line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to + signal in the rear occupant classification sensor LH circuit for 2 seconds Rear occupant classification sensor LH malfunction classification malfunction No. 1 seat wire Front seat assembly RH (Rear occupant classification sensor LH) classification Q2 1 5 2 9 3 3 H100921E26
282 SUPPLEMENTL RESTRINT SYSTEM OUPNT LSSIFITION SYSTEM INSPETION PROEURE If troubleshooting (wire harness inspection) is difficult to perform, remove the front passenger seat installation bolts to see the under surface of the seat cushion. In the above case, hold the seat so that it does not tip over. Holding the seat for a long period of time may cause a problem, such as seat rail deformation. Hold the seat up only for as long as necessary. 1 HEK T (e) lear the Ts stored in the memory (See page - 254). First clear Ts stored in the occupant classification and then in the center airbag sensor assembly. heck the Ts (See page -254). : T 1782 is not output. odes other than T 1782 may be output at this time, but they are not related to this check. USE SIMULTION METHO TO HEK 2 HEK ONNETION OF ONNETO heck that the connectors are properly connected to the occupant classification and the rear occupant classification sensor LH. : The connectors are properly connected. ONNET ONNETO
SUPPLEMENTL RESTRINT SYSTEM OUPNT LSSIFITION SYSTEM 283 3 HEK NO.1 SET WIRE (TO +) onnector isconnect the connectors from the occupant classification and the rear occupant classification sensor LH. Measure the voltage. Standard voltage -3 () - Ignition switch on elow 1 V -5 () - Ignition switch on elow 1 V -9 () - Ignition switch on elow 1 V H102161E03 4 HEK NO.1 SET WIRE (FOR OPEN) Using a service wire, connect Q2-1 () and Q2-3 (), and connect Q2-2 () and Q2-3 () of connector. NOTIE: o not forcibly insert a service wire into the terminals of the connector when connecting. Measure the resistance. Standard resistance Q2 onnector Service Wire onnector -5 () - -3 () elow 1 Ω -9 () - -3 () elow 1 Ω Service Wire H100213E06
284 SUPPLEMENTL RESTRINT SYSTEM OUPNT LSSIFITION SYSTEM 5 HEK NO.1 SET WIRE (FOR SHORT) isconnect the service wire from connector. Measure the resistance. Standard resistance -5 () - -3 () -9 () - -3 () -5 () - -9 () onnector H102161E03 6 HEK NO.1 SET WIRE (TO GROUN) Measure the resistance. Standard resistance -3 () - -5 () - -9 () - onnector H102161E03
SUPPLEMENTL RESTRINT SYSTEM OUPNT LSSIFITION SYSTEM 285 7 HEK T (e) (f) (g) onnect the connectors to the occupant classification and the rear occupant classification sensor LH. lear the Ts stored in the memory (See page - 254). First clear Ts stored in the occupant classification and then in the center airbag sensor assembly. heck the Ts (See page -254). : T 1782 is not output. odes other than T 1782 may be output at this time, but they are not related to this check. USE SIMULTION METHO TO HEK 8 REPLE OUPNT LSSIFITION Replace the occupant classification (See page - 412). Perform the inspection using parts from a normal vehicle if possible. 9 PERFORM ZERO POINT LIRTION onnect the intelligent tester to the L3. Using the intelligent tester, perform the zero point calibration (See page -246). : OMPLETE is displayed. Go to step 12
286 SUPPLEMENTL RESTRINT SYSTEM OUPNT LSSIFITION SYSTEM 10 PERFORM SENSITIVITY HEK Using the intelligent tester, perform the sensitivity check (See page -246). (1) onfirm that nothing is placed on the passenger seat. (2) onfirm that the beginning sensor reading is within the standard range. -3.2 to 3.2 kg (-7 to 7 lb) (3) Place a 30 kg (66.14 lb) weight (e.g. a lead mass) onto the front passenger seat. (4) onfirm that the sensitivity is within the standard range. 27 to 33 kg (59.52 to 72.75 lb) When performing the sensitivity check, use a solid metal weight (the check result may not be accurate if a liquid weight is used). Go to step 12 11 HEK T (e) (f) lear the Ts stored in the memory (See page - 254). First clear Ts stored in the occupant classification and then in the center airbag sensor assembly. heck the Ts (See page -254). : T 1782 is not output. odes other than T 1782 may be output at this time, but they are not related to this check. EN 12 REPLE FRONT SET SSEMLY RH Replace the front seat assembly RH (See page SE-5).
SUPPLEMENTL RESTRINT SYSTEM OUPNT LSSIFITION SYSTEM 287 13 PERFORM ZERO POINT LIRTION onnect the intelligent tester to the L3. Using the intelligent tester, perform the zero point calibration (See page -246). : OMPLETE is displayed. 14 PERFORM SENSITIVITY HEK Using the intelligent tester, perform the sensitivity check (See page -246). (1) onfirm that nothing is placed on the passenger seat. (2) onfirm that the beginning sensor reading is within the standard range. -3.2 to 3.2 kg (-7 to 7 lb) (3) Place a 30 kg (66.14 lb) weight (e.g. a lead mass) onto the front passenger seat. (4) onfirm that the sensitivity is within the standard range. 27 to 33 kg (59.52 to 72.75 lb) When performing the sensitivity check, use a solid metal weight (the check result may not be accurate if a liquid weight is used). EN