2005年丰田汉兰达维修手册 rm rm1144u 04 213ke cib11483

1、05-1527 DIAGNOSTICS -SUPPLEMENTAL RESTRAINT SYSTEMDIAGNOSTICS -SUPPLEMENTAL RESTRAINT SYSTEM05IVN-01DTCB1148/36FRONT AIRBAG SENSOR (RH) MALFUNCTIONCIRCUIT DESCRIPTIONThe airbag front RH sensor circuit consists of the diagnostic circuit and the frontal deceleration sensor, etc. If the airbag sensor a

2、ssy center receives signals from the frontal deceleration sensor, it judges whether or not the SRS should be activated.DTC B1148/36 is recorded when a malfunction in the airbag front RH sensor is detected.DTC No.DTC Detecting ConditionTrouble AreaB1148/36 Short circuit in front airbag sensor RH wire

3、 harness (to B+) Short circuit in front airbag sensor RH wire harness (to ground) Open circuit R wire harness or -SL wire harness of front airbag sensor RH Airbag front RH sensor malfunction Airbag sensor assy center malfunction Airbag front RH sensor Airbag sensor assy center Cowl wire Engine room

4、main wireA9Airbag Front RH SensorAirbag Sensor Assy Center+SRB-W23IK1W9A17 +SR-SRBR-W14IK1B20A17 -SRH02750WIRING DIAGRAM2005 HIGHLANDER REPAIR MANUAL (RM1144U)Author :Date :1527CHECK DTC1PECTION PROCEDURE(a) Turn the ignition switch to the ON position, and wait for at least 60 seconds.Airbag Front R

5、HSensorAirbag Sensor AssyCenterDLC3DTC B1148/36CGTCH02757 H10600 H16834H42117(b) Clear the DTCs stored in memory (see page 05-1215 ).(c) Turn the ignition switch to the LOCK position.(d) Turn the ignition switch to the ON position, and wait for at least 60 seconds.(e) Check the DTCs (see page 05-121

6、5 ).OK:DTC B1148/36 is not output.HINT:Codes other than code B1148/36 may be output at this time, but they are not related to this check.NGGo to step 2OKUSE SIMULATION METHOD TO CHECKCHECK CONNECTION OF CONNECTORS2(a) Turn the ignition switch to the LOCK position.(b) Disconnect the negative (-) term

7、inal cable from the battery, and wait for at least 90 seconds.(c) Check that the connectors are properly connected to the airbag sensor assy center and the airbag front RH sensor.OK:NGCONNECT CONNECTORS, THEN GO TO STEP 1OKThe connectors are connected.CHECK FRONT AIRBAG SENSOR (RH) CIRCUIT (OPEN)3 D

8、IAGNOSTICS -SUPPLEMENTAL RESTRAINT SYSTEM(a) Disconnect the connectors from the airbag sensor assy center and the airbag front RH sensor.Airbag Front F RH SensorEAirbagA Sensor AssyD CBCenter-SRA9+SRA17+SR-SRService WireH03353 H08016 C81408H41800(b) Using a service wire, connect A9-2 (+SR) and A9-1

9、(- SR) of connector ”E”.NOTICE:Do not forcibly ert a service wire into the terminals of the connector when connecting.(c) Measure the resistance according to the value(s) in the table below.Standard:Tester connectionConditionSpecified conditionA17-9 (+SR) -A17-20 (-SR)AlwaysBelow 1 WNGGo to step 8OK

10、CHECK FRONT AIRBAG SENSOR (RH) CIRCUIT (TO B+)4(a) Disconnect the service wire from connector ”E”.Airbag Front F RH SensorAED CBAirbag Sensor AssyCenterA17+SR-SRH03355 C81408H42510(b) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.(c) Turn the ignition switch

11、 to the ON position.(d) Measure the voltage according to the value(s) in the table below.Standard:Tester connectionConditionSpecified conditionA17-9 (+SR) -Body groundIgnition switch ONBelow 1 VA17-20 (-SR) -Body groundIgnition switch ONBelow 1 VNGGo to step 9OKTester connectionConditionSpecified co

12、nditionA17-9 (+SR) -A17-20 (-SR)Always1 MW or HigherCHECK FRONT AIRBAG SENSOR (RH) CIRCUIT (TO GROUND)5Airbag Front F RH SensorAED CBAirbag Sensor AssyCenterA17+SR-SRH03355 C81408H42510(a) Turn the ignition switch to the LOCK position.(b) Disconnect the negative (-) terminal cable from the bat- tery

13、, and wait for at least 90 seconds.(c) Measure the resistance according to the value(s) in the table below.Standard:Tester connectionConditionSpecified conditionA17-9 (+SR) -Body groundAlways1 MW or HigherA17-20 (-SR) -Body groundAlways1 MW or HigherNGGo to step 10OKCHECK FRONT AIRBAG SENSOR (RH) CI

14、RCUIT (SHORT)6AirbagAirbagSensor(a)Measure the resistance according to the value(s) in thetable below.Standard:Front FA AssyRH SensorED CBCenterA17+SR-SRH03355C81408H42510NGGo to step 11OKCHECK AIR BAG FRONT RH SENSOR7 DIAGNOSTICS -SUPPLEMENTAL RESTRAINT SYSTEM(a) Connect the connector to the airbag

15、 sensor assy center.Airbag SensorFront LHDCAirbag Sensor AssyCenterDTC B1148/36DLC3DTC B1149/37CGTCH02757H10600 H16834H16835H42118(b) Interchange the airbag front RH sensor with the airbag sensor front LH and connect the connectors to them.(c) Connect the negative (-) terminal cable to the battery,

16、and wait for at least 2 seconds.(d) Turn the ignition switch to the ON position, and wait for at least 60 seconds.(e) Clear the DTCs stored in memory (see page 05-1215 ).(f) Turn the ignition switch to the LOCK position.(g) Turn the ignition switch to the ON position, and wait for at least 60 second

17、s.(h) Check the DTCs (see page 05-1215 ).Result:NG: ADTC B1149/37 is output.NG: BDTC B1148/36 is output.OKDTC B1148/36 and B1149/37 are not output.NG:A REPLACE AIR BAG SENSOR FRONT RH (SEE PAGE 60-55 )NG:BREPLACE AIR BAG SENSOR ASSY CENTER (SEE PAGE 60-53 )OKUSE SIMULATION METHOD TO CHECKCHECK ENGIN

18、E ROOM MAIN WIRE(OPEN)8Engine Room Main WireAirbagFrontCowl WireRHSensorFED CBAirbagA Sensor AssyCenterIK1-SRA9+SR+SR-SRService WireH03352 C81305H43424(a) Disconnect the engine room main wire connector from the cowl wire.HINT:Connector ”E” has already been erted into the service wire.(b) Measure the

19、 resistance according to the value(s) in the table below.Standard:Tester connectionConditionSpecified conditionIK1-3 (+SR) -IK1-4 (-SR)AlwaysBelow 1 WNGREPAIR OR REPLACE ENGINE ROOM MAIN WIREOKREPAIR OR REPLACE COWL WIRECHECK ENGINE ROOM MAIN WIRE(TO B+)9(a) Turn the ignition switch to the LOCK posi

20、tion.Engine Room Main WireAirbagFrontCowl WireAirbagSensorRHSensorFA AssyED CBCenterIK1-SR+SRH03354 C81305H43447(b) Disconnect the negative (-) terminal cable from the bat- tery, and wait for at least 90 seconds.(c) Disconnect the engine room main wire connector from the cowl wire.(d) Connect the ne

21、gative (-) terminal cable to the battery, and wait for at least 2 seconds.(e) Turn the ignition switch to the ON position.(f) Measure the voltage according to the value(s) in the table below.Standard:Tester connectionConditionSpecified conditionIK1-3 (+SR) -Body groundIgnition switch ONBelow 1 VIK1-

22、4 (-SR) -Body groundIgnition switch ONBelow 1 VNG REPAIR OR REPLACE ENGINE ROOM MAIN WIREOKREPAIR OR REPLACE COWL WIRECHECK ENGINE ROOM MAIN WIRE(TO GROUND)10 DIAGNOSTICS -SUPPLEMENTAL RESTRAINT SYSTEM(a) Disconnect the engine room main wire connector from the cowl wire.Engine Room Main WireAirbagCowl WireAirbagFront RHSensorFSensorED CBA AssyCenterIK1-SR+SRH03354 C81305H43