sensor INFINITI FX35 2007 Service Manual

SRS-26
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
NOTE:
Follow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunction is
eliminated using air bag warning lamp or CONSULT-II each time repair is finished. If malfunction is still
observed, proceed to the next step. When malfunction is eliminated, further repair work is not required.
OCCUPANT SENS C/U
[UNIT FAIL]
[B1017]
[B1020]
[B1021]
Trouble occurs in Occupant Classification System-CU.

Replace passenger side seat cush-
ion assembly.
OCCUPANT SENS C/U
[COMM FAIL]
[B1022]

Trouble occurs in Occupant Classification System-CU, circuit of
Occupant Classification System-CU—Diagnosis Senser Unit, or
Diagnosis Sensor Unit. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace passenger side seat cush- ion assembly.
4. Replace the diagnosis sensor unit.
OCCUPANT SENS
[UNIT FAIL]
[B1018]

Trouble occurs in Occupant Classification System-SENS.
Replace passenger side seat cush-
ion assembly.
BELT TENSION SENS
[UNIT FAIL]
[B1019]

Trouble occurs in Belt Tension sensor (BTS), circuit of BTS—
Occupant Classification System-CU, or Occupant Classification
System-CU. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace passenger side seat belt assembly.
4. Replace the diagnosis sensor unit.
FRONTAL COLLISION-
DETECTION
[B1209]

Seat belt pre-tensioner and front air bag are deployed.
Go to SRS-55, "For Frontal Colli-
sion" .
SIDE COLLISION
DETECTION
[B1210]

Side and curtain air bag is deployed.
Go to SRS-57, "For Side Collision" .
Diagnostic item Explanation
Repair order
“Recheck SRS at each replacement”

SRS-30
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
3. Touch “TROUBLE DIAG RECORD”.
NOTE:
With “TROUBLE DIAG RECORD”, diagnosis results previously
erased by a reset operation can be displayed.
4. Diagnostic code is displayed on “TROUBLE DIAG RECORD”.
5. Touch “PRINT”.
6. Compare diagnostic codes to SRS-30, "
DTC No. Index (“SELF-
DIAG [PAST]” or “TROUBLE DIAG RECORD”)" .
7. Touch “BACK” key of CONSULT-II until “SELECT SYSTEM” appears.
8. Turn ignition switch OFF, then turn off and disconnect CON- SULT-II, and both battery cables.
9. Repair the system as outlined by the “Repair order” in “Intermit- tent Malfunction Diagnostic Code Chart”, that corresponds to the
self-diagnostic result. For replacement procedure of component
parts, refer to the Removal and Installation procedure for the appropriate component.
10. Go to SRS-27, "
DIAGNOSTIC PROCEDURE 3" , for final inspection.
DTC No. Index (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)
SRS697
SHIA0182E
Diagnostic item Explanation Repair order
“Recheck SRS at each replacement”
NO DTC IS
DETECTED. When malfunction is
indicated by the “AIR
BAG” warning lamp in
User mode.

Low battery voltage (Less than 9V)
Go to SRS-27, "DIAGNOSTIC PRO-
CEDURE 3" .

No malfunction is detected.
Go to SRS-27, "DIAGNOSTIC PRO-
CEDURE 3" .
DRIVER AIR BAG
MODULE
[OPEN]
[B1054]

Driver air bag module circuit is open (including the spiral cable). 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. If the harness check result is OK, replace driver air bag module, diag-
nosis sensor unit and spiral cable.
DRIVER AIR BAG
MODULE
[VB-SHORT]
[B1055]

Driver air bag module circuit is shorted to a power supply circuit
(including the spiral cable).
DRIVER AIR BAG
MODULE
[GND-SHORT]
[B1056]

Driver air bag module circuit is shorted to ground (including the
spiral cable).
DRIVER AIR BAG
MODULE
[SHORT]
[B1057]

Driver air bag module circuit is shorted between lines.

TROUBLE DIAGNOSIS SRS-31
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SRS
Revision: 2006 July 2007 FX35/FX45
ASSIST A/B MODULE
[OPEN]
[B1070]
Front passenger air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. If the harness check result is OK, replace the diagnosis sensor unit
and front passenger air bag module.
ASSIST A/B MODULE
[VB-SHORT]
[B1071]

Front passenger air bag module circuit is shorted to a power
supply circuit.
ASSIST A/B MODULE
[GND-SHORT]
[B1072]

Front passenger air bag module circuit is shorted to ground.
ASSIST A/B MODULE
[SHORT]
[B1073]

Front passenger air bag module circuit is shorted between lines.
CRASH ZONE SEN
[UNIT FAIL]
[B1033]
[B1034]
CRASH ZONE SEN
[COMM FAIL]
[B1035]
CRASH ZONE SEN
[UNMATCH]
[B1036]

Crash zone sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. If the harness check result is OK, replace crash zone sensor and diag-
nosis sensor unit.
SIDE MODULE LH
[OPEN]
[B1134]

Front LH side air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. If the harness check result is OK, replace the diagnosis sensor unit
and LH side air bag module.
SIDE MODULE LH
[VB-SHORT]
[B1135]

Front LH side air bag module circuit is shorted to a power sup-
ply circuit.
SIDE MODULE LH
[GND-SHORT]
[B1136]

Front LH side air bag module circuit is shorted to ground.
SIDE MODULE LH
[SHORT]
[B1137]

Front LH side air bag module circuit is shorted between lines.
SIDE MODULE RH
[OPEN]
[B1129]

Front RH side air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. If the harness check result is OK, replace the diagnosis sensor unit
and RH side air bag module.
SIDE MODULE RH
[VB-SHORT]
[B1130]

Front RH side air bag module circuit is shorted to a power sup-
ply circuit.
SIDE MODULE RH
[GND-SHORT]
[B1131]

Front RH side air bag module circuit is shorted to ground.
SIDE MODULE RH
[SHORT]
[B1132]

Front RH side air bag module circuit is shorted between lines.
SATELLITE SENS LH
[UNIT FAIL]
[B1118]
[B1119]
SATELLITE SENS LH
[COMM FAIL]
[B1120]
SATELLITE SENS LH
[UNMATCH]
[B1121]

LH side air bag (Satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. If the harness check result is OK, replace the diagnosis sensor unit
and LH side air bag (Satellite) sen-
sor.
Diagnostic item Explanation
Repair order
“Recheck SRS at each replacement”

SRS-32
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
SATELLITE SENS RH
[UNIT FAIL]
[ B 111 3 ]
[ B 111 4 ]
SATELLITE SENS RH
[COMM FAIL]
[ B 111 5 ]
SATELLITE SENS RH
[UNMATCH]
[ B 111 6 ]
RH side air bag (Satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. If the harness check result is OK, replace the diagnosis sensor unit
and RH side air bag (Satellite) sen-
sor.
PRE-TEN FRONT LH
[OPEN]
[B1086]

Front LH pre-tensioner circuit is open.
1. Visually check the wiring harness connections.
2. Replace the harness if it has visible damage.
3. If the harness check result is OK, replace the diagnosis sensor unit
and front LH seat belt.
PRE-TEN FRONT LH
[VB-SHORT]
[B1087]

Front LH pre-tensioner circuit is shorted to a power supply cir-
cuit.
PRE-TEN FRONT LH
[GND-SHORT]
[B1088]

Front LH pre-tensioner circuit is shorted to ground.
PRE-TEN FRONT LH
[SHORT]
[B1089]

Front LH pre-tensioner circuit is shorted between lines.
PRE-TEN FRONT RH
[OPEN]
[B1081]

Front RH pre-tensioner circuit is open.
1. Visually check the wiring harness connections.
2. Replace the harness if it has visible damage.
3. If the harness check result is OK, replace the diagnosis sensor unit
and front RH seat belt.
PRE-TEN FRONT RH
[VB-SHORT]
[B1082]

Front RH pre-tensioner circuit is shorted to a power supply cir-
cuit.
PRE-TEN FRONT RH
[GND-SHORT]
[B1083]

Front RH pre-tensioner circuit is shorted to ground.
PRE-TEN FRONT RH
[SHORT]
[B1084]

Front RH pre-tensioner circuit is shorted between lines.
CURTAIN MODULE LH
[OPEN]
[B1150]

LH side curtain air bag module circuit is open.
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. If the harness check result is OK, replace the diagnosis sensor unit
and LH side curtain air bag module.
CURTAIN MODULE LH
[VB-SHORT]
[B1151]

LH side curtain air bag module circuit is shorted to a power sup-
ply circuit.
CURTAIN MODULE LH
[GND-SHORT]
[B1152]

LH side curtain air bag module circuit is shorted to ground.
CURTAIN MODULE LH
[SHORT]
[B1153]

LH side curtain air bag module circuit is shorted between lines.
Diagnostic item Explanation
Repair order
“Recheck SRS at each replacement”

TROUBLE DIAGNOSIS SRS-33
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B
SRS
Revision: 2006 July 2007 FX35/FX45
CURTAIN MODULE RH
[OPEN]
[B1145]
RH side curtain air bag module circuit is open.
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. If the harness check result is OK, replace the diagnosis sensor unit
and RH side curtain air bag module.
CURTAIN MODULE RH
[VB-SHORT]
[B1146]

RH side curtain air bag module circuit is shorted to a power sup-
ply circuit.
CURTAIN MODULE RH
[GND-SHORT]
[B1147]

RH side curtain air bag module circuit is shorted to ground.
CURTAIN MODULE RH
[SHORT]
[B1148]

RH side curtain air bag module circuit is shorted between lines.
CONTROL UNIT
[B1001-B1015]
[B1026-B1031]
[B1042-B1047]
[B1058-B1063]
[B1074-B1079]
[ B 11 0 6 - B 1111 ]
[B1122-B1127]
[B1138-B1143]
[B1202-B1207]

Diagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the diagnosis sensor unit.
PASS A/B INDCTR
CKT
[B1023]

Cutoff telltale circuit is open or shorted to grand or the circuits
are shorted each other. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace cutoff telltale.
4. Replace the diagnosis sensor unit.
OCCUPANT SENS C/U
[UNIT FAIL]
[B1017]
[B1020]
[B1021]

Trouble occurs in Occupant Classification System-CU.

Replace passenger side seat cush-
ion assembly.
OCCUPANT SENS C/U
[COMM FAIL]
[B1022]

Trouble occurs in Occupant Classification System-CU, circuit of
Occupant Classification System-CU—Diagnosis Senser Unit, or
Diagnosis Sensor Unit. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace passenger side seat cush- ion assembly.
4. Replace the diagnosis sensor unit.
OCCUPANT SENS
[UNIT FAIL]
B1018

Trouble occurs in Occupant Classification System-SENS.

Replace passenger side seat cush-
ion assembly.
BELT TENSION SENS
[UNIT FAIL]
[B1019]

Trouble occurs in Belt Tension sensor (BTS), circuit of BTS—
Occupant Classification System-CU, or Occupant Classification
System-CU. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace passenger side seat belt assembly.
4. Replace the diagnosis sensor unit.
Diagnostic item Explanation
Repair order
“Recheck SRS at each replacement”

TROUBLE DIAGNOSIS SRS-39
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SRS
Revision: 2006 July 2007 FX35/FX45
Trouble Diagnosis: “AIR BAG” Warning Lamp Does Not Turn OFFNHS0007J
DIAGNOSTIC PROCEDURE 7
1. CHECK THE DEPLOYMENT OF AIR BAG MODULE
Is air bag module deployed?
YES or NO
YES >> Refer to SRS-55, "COLLISION DIAGNOSIS" .
NO >> GO TO 2.
2. CHECK THE AIR BAG FUSE
Check 10A fuse [No. 13, located in fuse block (J/B)].
Refer to PG-3, "
POWER SUPPLY ROUTING CIRCUIT" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK AIR BAG FUSE AGAIN
Replace “AIR BAG” fuse and turn ignition switch ON.
Does the
“AIR BAG” fuse blow again?
YES >> Repair or replace main harness.
NO >> INSPECTION END
4. CHECK DIAGNOSIS SENSOR UNIT
Connect CONSULT-II and touch “START”.
Is “AIR BAG” displayed on CONSULT-II?
YES or NO
YES >> GO TO 5.
NO >> Visually check the wiring harness connection of diagno- sis sensor unit. If the harness connection check result is
OK, replace diagnosis sensor unit.
5. CHECK HARNESS CONNECTION
Is harness connection between warning lamp and diagnosis sensor unit OK?
OK or NG
OK >> Replace diagnosis sensor unit.
NG >> Connect “AIR BAG” warning lamp and diagnosis sensor unit connector properly. If “AIR BAG” warning lamp still does not go off, replace harness.
BCIA0030E

SRS-40
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
Trouble Diagnosis: “AIR BAG” Warning Lamp Does Not Turn ONNHS0007K
DIAGNOSTIC PROCEDURE 8
1. CHECK METER FUSE
Check 10A fuse [No. 14, located in fuse block (J/B)].
Refer to PG-3, "
POWER SUPPLY ROUTING CIRCUIT" .
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. CHECK METER FUSE AGAIN
Replace 10A fuse [No. 14, located in fuse block (J/B)] and turn ignition switch ON.
Does the meter fuse blow again?
YES >> Repair or replace the related harness.
NO >> INSPECTION END
3. CHECK HARNESS CONNECTION BETWEEN DIAGNOSIS SENSOR UNIT AND COMBINATION
METER
Disconnect diagnosis sensor unit connector and turn ignition switch ON.
Does “AIR BAG” warning lamp turn on?
YES or NO
YES >> Replace diagnosis sensor unit.
NO >> Replace combination meter assembly.

TROUBLE DIAGNOSIS SRS-41
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SRS
Revision: 2006 July 2007 FX35/FX45
Trouble Diagnosis: Passenger Seatbelt Warning SystemNHS0009V
1. CHECK THE SYSTEM 1
Check seatbelt warning lamp function.
Seatbelt warning lamp turns ON in the following conditions.

Driver seatbelt is fastened.

Occupant is on passenger seat.

Passenger seatbelt is not fasten.
OK or NG
OK >> GO TO 2.
NG >> Check the followings.

Harness between air bag diagnosis sensor unit and combination meter.

Seatbelt buckle switch (passenger side) circuit.

Seatbelt buckle switch (passenger side).
If these are OK, replace air bag diagnosis sensor unit.
2. CHECK THE SYSTEM 2
Check seatbelt warning lamp function.
Seatbelt warning lamp turns OFF in the following conditions.

Driver seatbelt is fastened.

Occupant is on passenger seat.

Passenger seatbelt is fastened.
OK or NG
OK >> System is OK.
NG >> Check the followings.

Seatbelt buckle switch (passenger side) circuit.

Seatbelt buckle switch (passenger side).
If these are OK, replace air bag diagnosis sensor unit.

SRS-50
CRASH ZONE SENSOR
Revision: 2006 July 2007 FX35/FX45
CRASH ZONE SENSORPFP:98531
Removal and InstallationNHS0007P
REMOVAL
CAUTION:

Before servicing SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3
minutes.

Do not use air tools or electric tools for servicing.
1. Remove front grille. Refer to EI-22, "
Removal and Installation" .
2. Remove crash zone sensor connector.
3. Remove crash zone sensor fixing nuts.
CAUTION:

Replace crash zone sensor if it has been dropped or sustained an impact.

Do not disassemble crash zone sensor.

Do not use old fixing nuts after removal; replace with new nuts.

Replace the crash zone sensor of deployed SRS driver air bag and deployed SRS front passenger
air bag.
INSTALLATION
Install in the reverse order of removal.
CAUTION:

Be careful not to damage the crash zone sensor harness.

After the work is completed, make sure no system malfunction is detected by air bag warning
lamp.

In case that malfunction is detected by the air bag warning lamp, reset by the self-diagnosis func-
tion and delete the memory by CONSULT −ll.

In case that malfunction is still detected after the above operation, perform self-diagnosis to repair
malfunctions. Refer to SRS-20, "
SRS Operation Check" .
PHIA0316E

SIDE AIR BAG (SATELLITE) SENSOR SRS-51
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SRS
Revision: 2006 July 2007 FX35/FX45
SIDE AIR BAG (SATELLITE) SENSORPFP:98830
Removal and InstallationNHS0007Q
REMOVAL
CAUTION:

Before servicing SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3
minutes.

Do not use air tools or electric tools for servicing.
1. Remove seat belt pre-tensioner. Refer to SB-4, "
Removal and Installation of Front Seat Belt" .
2. Remove side air bag (Satellite) sensor fixing nuts.
3. Remove the side air bag (Satellite) sensor connector.
CAUTION:

Do not use old nuts; replace with new ones.

Check side air bag (Satellite) sensor to ensure it is free of deformities, dents, cracks or rust. If it
shows any visible signs of damage, replace it with new one.

Do not disassemble side air bag (Satellite) sensor.

Replace side air bag (Satellite) sensor if it has been dropped or sustained an impact.

Replace the satellite sensor of deployed SRS front side air bag and deployed SRS side curtain air
bag.
INSTALLATION
Install in the reverse order of removal.
CAUTION:

Be careful not to damage the satellite sensor harness.

After the work is completed, make sure no system malfunction is detected by air bag warning
lamp.

In case that malfunction is detected by the air bag warning lamp, reset by the self-diagnosis func-
tion and delete the memory by CONSULT −ll.

In case that malfunction is still detected after the above operation, perform self-diagnosis to repair
malfunctions. Refer to SRS-20, "
SRS Operation Check" .
PHIA0314E