SUPPLMNTL RSTRINT SYSTM IRG SYSTM 125 DTC 1650/32 System Malfunction DSCRIPTION The occupant classification system circuit consists of the center airbag sensor assembly and the occupant classification system. When the center airbag sensor assembly receives signals from the occupant classification, it determines whether or not the front passenger airbag assembly, front seat airbag assembly RH and seat belt pretensioner RH should be operated. DTC 1650/32 is set when a malfunction is detected in the occupant classification system circuit. DTC No. DTC Detecting Conditions Trouble reas 1650/32 classification system malfunction The center airbag sensor assembly receives a line short circuit signal, an open circuit signal, a short circuit to ground signal or a short circuit to + signal in the occupant classification system circuit for 2 seconds Center airbag sensor assembly malfunction classification system Center airbag sensor assembly loor wire No. 1 seat wire WIRI DIGRM 8 11 O5 O10 (*1) (*2) G-R G-R 5 H1 4 J2 (*1) (*2) G-R G-R 12 23 SP+ 4 12 G- 6 (*1) G- 13 O5 O10 H1 23 (*1) (*2) 5 G- (*2) G- J2 SP- *1: Separate Seat *2: ench Seat Center irbag Sensor ssembly H10191501
126 SUPPLMNTL RSTRINT SYSTM IRG SYSTM CUTION: In order to prevent unexpected airbag deployment, disconnect the following connectors before inspecting parts such as wire harnesses, if the application of tester probes to the center airbag sensor assembly connector is necessary. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Disconnect the connectors from the center airbag sensor assembly. (d) Disconnect the connectors from the steering pad. (e) Disconnect the connector from the front passenger airbag assembly. (f) Disconnect the connector from the front seat airbag assembly LH. (g) Disconnect the connector from the front seat airbag assembly RH. HINT: Skip the following steps if side and curtain shield airbags are not fitted. (h) Disconnect the connector from the curtain shield airbag assembly LH. (i) Disconnect the connector from the curtain shield airbag assembly RH. (j) Disconnect the connector from the front seat outer belt assembly LH. (k) Disconnect the connector from the front seat outer belt assembly RH. 1 CHCK DTC (CNTR IRG SNSOR SSMLY) Center airbag sensor assembly (d) (e) Turn the ignition switch to the ON position. Clear any DTCs stored in the memory (See page - 34). Turn the ignition switch to the ON position, and wait for at least 60 seconds. Check for DTCs (See page -34). : DTC 1650/32 is not output. HINT: DTCs other than 1650/32 may be output at this time, but they are not related to this check. DLC3 DTC 1650/32 US SIMULTION MTHOD TO CHCK CG TC H10184901 2 CHCK DTC (OCCUPNT CLSSIICTION ) Turn the ignition switch to the ON position, and wait for at least 10 seconds. Using the intelligent tester, check for DTCs of the occupant classification (See page -362). : DTC is not output.
SUPPLMNTL RSTRINT SYSTM IRG SYSTM 127 GO TO DTC CHRT 3 CHCK CONNCTION O CONNCTO Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Check that the connectors are properly connected to the center airbag sensor assembly and the occupant classification. : The connectors are properly connected. CONNCT CONNCTO 4 CHCK CONNCTO Check that the connectors (on the center airbag sensor assembly side and occupant classification side) are not damaged (See page IN-34). : The connectors are not deformed or damaged. RPIR OR RPLC WIR HRNSS
128 SUPPLMNTL RSTRINT SYSTM IRG SYSTM 5 CHCK OCCUPNT CLSSIICTION SYSTM CIRCUIT (OR OPN) O5 loor Wire No. 1 Seat Wire Separate Seat : Center irbag Sensor ssembly Disconnect the connectors from the center airbag sensor assembly and the occupant classification. Separate Seat : Using a service wire, connect O5-8 () and O5-4 () of connector. NOTIC: Do not forcibly insert a service wire into the terminals of the connector when connecting. ench Seat : Using a service wire, connect O10-11 () and O10-12 () of connector. NOTIC: Do not forcibly insert a service wire into the terminals of the connector when connecting. (d) Measure the resistance. Standard resistance 23 15 14 13 12 11 23-12 (SP+) - 23-13 (SP-) elow 1 Ω Go to step 13 ench Seat : O10 SP+ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 SP- Service Wire Service Wire H10192201
SUPPLMNTL RSTRINT SYSTM IRG SYSTM 129 6 CHCK OCCUPNT CLSSIICTION SYSTM CIRCUIT (OR SHORT) Disconnect the service wire from connector. Measure the resistance. Standard resistance 23-12 (SP+) - 23-13 (SP-) Center airbag sensor assembly Go to step 14 23 15 14 13 12 11 SP- SP+ H10185101 7 CHCK OCCUPNT CLSSIICTION SYSTM CIRCUIT (TO +) Center airbag sensor assembly Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the ignition switch to the ON position. Measure the voltage. Standard voltage 23-12 (SP+) - ody ground Ignition switch ON elow 1 V 23-13 (SP-) - ody ground Ignition switch ON elow 1 V Go to step 15 23 15 14 13 12 11 SP- SP+ H10185101
130 SUPPLMNTL RSTRINT SYSTM IRG SYSTM 8 CHCK OCCUPNT CLSSIICTION SYSTM CIRCUIT (TO GROUND) Center airbag sensor assembly Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Measure the resistance. Standard resistance 23-12 (SP+) - ody ground 23-13 (SP-) - ody ground Go to step 16 23 15 14 13 12 11 SP- SP+ H10185101 9 CHCK CNTR IRG SNSOR SSMLY DLC3 CG TC Center airbag sensor assembly DTC 1650/32 H10184901 Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Replace the center airbag sensor assembly (See page -602). HINT: Perform the inspection using parts from a normal vehicle when possible. (d) (e) (f) (g) (h) (i) (j) Connect the connectors to the center airbag sensor assembly. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the ignition switch to the ON position, and wait for at least 60 seconds. Clear any DTCs stored in the memory (See page - 34). Turn the ignition switch to the ON position, and wait for at least 60 seconds. Check for DTCs (See page -34). Result Result DTC 1650/32 is output (for separate seat) Proceed to
SUPPLMNTL RSTRINT SYSTM IRG SYSTM 131 Result DTC 1650/32 is not output (for bench seat) DTC 1650/32 is not output Proceed to C HINT: DTCs other than 1650/32 may be output at this time, but they are not related to this check. Go to step 17 C ND 10 RPLC OCCUPNT CLSSIICTION Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Replace the occupant classification (See page - 631). NXT 11 PRORM ZRO POINT CLIRTION (d) Connect the negative (-) terminal cable to the battery. Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position. Using the intelligent tester, perform the zero point calibration (See page -357). : COMPLTD is displayed on the tester. NXT 12 PRORM SNSITIVITY CHCK Using the intelligent tester, perform the sensitivity check (See page -357). Standard Value: 27 to 33 kg (59.52 to 72.75 lb) NXT ND
132 SUPPLMNTL RSTRINT SYSTM IRG SYSTM 13 CHCK NO. 1 ST WIR (OR OPN) loor Wire No. 1 Seat Wire Center irbag Sensor ssembly Disconnect the No. 1 seat wire connector from the instrument panel wire. HINT: The service wire has already been inserted into connector. Measure the resistance. Standard resistance H1-5 () - H1-6 () *1 elow 1 Ω J2-4 () - J2-5 () *2 elow 1 Ω Separate Seat : *1 : Separate Seat *2 : ench Seat O5 H1 RPIR OR RPLC NO. 1 ST WIR 3 6 2 5 1 4 ench Seat : O10 J2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Service Wire Service Wire H10192301 RPIR OR RPLC LOOR WIR
SUPPLMNTL RSTRINT SYSTM IRG SYSTM 133 14 CHCK NO. 1 ST WIR (OR SHORT) loor Wire No. 1 Seat Wire Disconnect the No. 1 seat wire connector from the instrument panel wire. Measure the resistance. Standard resistance Center irbag Sensor ssembly H1-5 () - H1-6 () *1 J2-4 () - J2-5 () *2 *1 : Separate Seat *2 : ench Seat Separate Seat : ench Seat : RPIR OR RPLC NO. 1 ST WIR H1 J2 3 6 2 5 1 4 H10192401 RPIR OR RPLC LOOR WIR
134 SUPPLMNTL RSTRINT SYSTM IRG SYSTM 15 CHCK NO. 1 ST WIR (TO +) loor Wire No. 1 Seat Wire H1 3 2 1 6 5 4 Center irbag Sensor ssembly Separate Seat : ench Seat : J2 (d) Disconnect the No. 1 seat wire connector from the instrument panel wire. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds. Turn the ignition switch to the ON position. Measure the voltage. Standard voltage H1-5 () - ody ground *1 Ignition switch ON elow 1 V H1-6 () - ody ground *1 Ignition switch ON elow 1 V J2-4 () - ody ground *2 Ignition switch ON elow 1 V J2-5 () - ody ground *2 Ignition switch ON elow 1 V *1 : Separate Seat *2 : ench Seat H10192401 RPIR OR RPLC NO. 1 ST WIR RPIR OR RPLC LOOR WIR
SUPPLMNTL RSTRINT SYSTM IRG SYSTM 135 16 CHCK NO. 1 ST WIR (TO GROUND) loor Wire No. 1 Seat Wire Disconnect the No. 1 seat wire connector from the instrument panel wire. Measure the resistance. Standard resistance H1 3 2 1 6 5 4 Center irbag Sensor ssembly Separate Seat : ench Seat : J2 H1-5 () - ody ground *1 H1-6 () - ody ground *1 J2-4 () - ody ground *2 J2-5 () - ody ground *2 *1 : Separate Seat *2 : ench Seat RPIR OR RPLC NO. 1 ST WIR H10192401 RPIR OR RPLC LOOR WIR 17 RPLC OCCUPNT CLSSIICTION (d) (e) (f) (g) (h) Turn the ignition switch to the ON position. Using the intelligent tester, read the current setting data stored in the occupant classification (See page - 476). HINT: If the previous data cannot be stored in the intelligent tester, replace the front seat cushion assembly (with occupant classification, occupant classification sensor). Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds. Replace the occupant classification (See page - 634). Connect the negative (-) terminal cable to the battery. Turn the ignition switch to the ON position. Using an intelligent tester, write the setting data read from the previously installed occupant classification into the newly installed occupant classification (See page -476).
136 SUPPLMNTL RSTRINT SYSTM IRG SYSTM NXT 18 PRORM SNSITIVITY CHCK Perform the sensitivity check (See page -480). NXT ND