wiring INFINITI QX56 2007 Factory Service Manual

SRS-12
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Wiring Diagram - SRS -
INFOID:0000000003532864
WHWA0312E

SRS-22
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Diagnostic code is displayed on "SELF-DIAG [CURRENT]".
If no malfunction is detected on "SELF-DIAG [CURRENT]", but mal-
function is detected in "SRS Operation Check", the following cases
may exist:
• "SELF-DIAG [PAST]" memory might not be erased.
• The SRS system malfunctions intermittently.
Refer to "DIAGNOSTIC PROCEDURE 4".
CONSULT-II Diagnostic Code Chart
WHIA0151E
SRS701
Diagnostic item ExplanationRepair order
Recheck SRS at each replacement
NO DTC IS DETECTEDMalfunction is indicat-
ed by the “AIR BAG”
warning lamp in User
mode.Low battery voltage (Less than 9V) 1. Go to SC-4
.
2. Go to "DIAGNOSTIC PROCE-
DURE 3" .
“SELF-DIAG [PAST]” memory might
not be erased.Go to "DIAGNOSTIC PROCEDURE 4"
.
Intermittent malfunction has been
detected in the past.Go to "DIAGNOSTIC PROCEDURE 5"
.
No malfunction is detected in User mode. —
DRIVER AIRBAG MODULE
[OPEN]
[B1049] or [B1054]Driver air bag module circuit is open (including the spiral ca-
ble).1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace driver air bag module.
4. Replace the spiral cable.
5. Replace the air bag diagnosis
sensor unit.
6. Replace the related harness. DRIVER AIRBAG MODULE
[VB-SHORT]
[B1050] or [B1055]Driver air bag module circuit is shorted to some power supply
circuit (including the spiral cable).
DRIVER AIRBAG MODULE
[GND-SHORT]
[B1051] or [B1056]Driver air bag module circuit is shorted to ground (including
the spiral cable).
DRIVER AIRBAG MODULE
[SHORT]
[B1052] or [B1057]Driver air bag module circuits are shorted to each other.

TROUBLE DIAGNOSIS
SRS-23
< SERVICE INFORMATION >
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ASSIST A/B MODULE
[OPEN]
[B1065] or [B1070]Front passenger air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace front passenger air bag
module.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. ASSIST A/B MODULE
[VB-SHORT]
[B1066] or [B1071]Front passenger air bag module circuit is shorted to some
power supply circuit.
ASSIST A/B MODULE
[GND-SHORT]
[B1067] or [B1072]Front passenger air bag module circuit is shorted to ground.
ASSIST A/B MODULE
[SHORT]
[B1068] or [B1073]Front passenger air bag module circuits are shorted to each
other.
CRASH ZONE SEN
[UNIT FAIL]
[B1033] or [B1034]
CRASH ZONE SEN
[COMM FAIL]
[B1035]Crash zone sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace the crash zone sensor.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness.
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 visi-
ble damage.
3. Replace front LH seat back as-
sembly (front LH side air bag
module).
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. SIDE MODULE LH
[VB-SHORT]
[B1135]Front LH side air bag module circuit is shorted to some power
supply 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 circuits are shorted to each oth-
er.
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 visi-
ble damage.
3. Replace front RH seat back as-
sembly (front RH side air bag
module).
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. SIDE MODULE RH
[VB-SHORT]
[B1130]Front RH side air bag module circuit is shorted to some power
supply 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 circuits are shorted to each oth-
er.
SATELLITE SENS LH
[UNIT FAIL]
[ B 111 8 ] o r [ B 111 9 ]
SATELLITE SENS LH
[COMM FAIL]
[B1120]LH side air bag (satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace the LH side air bag (sat-
ellite) sensor.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement

SRS-24
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
SATELLITE SENS RH
[UNIT FAIL]
[B1113] or [B1114]
SATELLITE SENS RH
[COMM FAIL]
[ B 111 5 ]RH side air bag (satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace the RH side air bag (sat-
ellite) sensor.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness.
PRE-TEN FRONT LH
[OPEN]
[B1086]The circuit for front LH seat belt pre-tensioner is open. 1. Visually check the wiring harness
connections.
2. Replace the harness if it has visi-
ble damage.
3. Replace front LH seat belt pre-
tensioner.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. PRE-TEN FRONT LH
[VB-SHORT]
[B1087]The circuit for front LH seat belt pre-tensioner is shorted to
some power supply circuit.
PRE-TEN FRONT LH
[GND-SHORT]
[B1088]The circuit for front LH seat belt pre-tensioner is shorted to
ground.
PRE-TEN FRONT LH
[SHORT]
[B1089]The circuits for the front LH seat belt pre-tensioner are shorted
to each other.
PRE-TEN FRONT RH
[OPEN]
[B1081]The circuit for front RH seat belt pre-tensioner is open. 1. Visually check the wiring harness
connections.
2. Replace the harness if it has visi-
ble damage.
3. Replace front RH seat belt pre-
tensioner.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. PRE-TEN FRONT RH
[VB-SHORT]
[B1082]The circuit for front RH seat belt pre-tensioner is shorted to
some power supply circuit.
PRE-TEN FRONT RH
[GND-SHORT]
[B1083]The circuit for front RH seat belt pre-tensioner is shorted to
ground.
PRE-TEN FRONT RH
[SHORT]
[B1084]The circuits for the front RH seat belt pre-tensioner are short-
ed to each other.
PRE-TEN2 FRONT LH
[OPEN]
[B1182]The circuit for front LH seat belt buckle pre-tensioner is open. 1. Visually check the wiring harness
connections.
2. Replace the harness if it has visi-
ble damage.
3. Replace front LH seat belt buckle
pre-tensioner.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. PRE-TEN2 FRONT LH
[VB-SHORT]
[B1183]The circuit for front LH seat belt buckle pre-tensioner is short-
ed to some power supply circuit.
PRE-TEN2 FRONT LH
[GND-SHORT]
[B1184]The circuit for front LH seat belt buckle pre-tensioner is short-
ed to ground.
PRE-TEN2 FRONT LH
[SHORT]
[B1185]The circuits for the front LH seat belt buckle pre-tensioner are
shorted to each other.
PRE-TEN2 FRONT RH
[OPEN]
[B1177]The circuit for front RH seat belt buckle pre-tensioner is open. 1. Visually check the wiring harness
connections.
2. Replace the harness if it has visi-
ble damage.
3. Replace front RH seat belt buckle
pre-tensioner.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. PRE-TEN2 FRONT RH
[VB-SHORT]
[B1178]The circuit for front RH seat belt buckle pre-tensioner is short-
ed to some power supply circuit.
PRE-TEN2 FRONT RH
[GND-SHORT]
[B1179]The circuit for front RH seat belt buckle pre-tensioner is short-
ed to ground.
PRE-TEN2 FRONT RH
[SHORT]
[B1180]The circuits for the front RH seat belt buckle pre-tensioner are
shorted to each other. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement

TROUBLE DIAGNOSIS
SRS-25
< SERVICE INFORMATION >
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SRS
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FR CURTN MODULE LH
[OPEN]
[B1198]The LH side front curtain air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace LH side curtain air bag
module.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. FR CURTN MODULE LH
[VB-SHORT]
[B1199]The LH side front curtain air bag module circuit is shorted to
some power supply circuits.
FR CURTN MODULE LH
[GND-SHORT]
[B1200]The LH side front curtain air bag module circuit is shorted to
ground.
FR CURTN MODULE LH
[SHORT]
[B1201]The circuits for the LH side front curtain air bag module are
shorted to each other.
FR CURTN MODULE RH
[OPEN]
[B1193]The RH side front curtain air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace RH side curtain air bag
module.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. FR CURTN MODULE RH
[VB-SHORT]
[B1194]The RH side front curtain air bag module circuit is shorted to
some power supply circuits.
FR CURTN MODULE RH
[GND-SHORT]
[B1195]The RH side front curtain air bag module circuit is shorted to
ground.
FR CURTN MODULE RH
[SHORT]
[B1196]The circuits for the RH side front curtain air bag module are
shorted to each other.
CURTAIN MODULE LH
[OPEN]
[B1150]The LH side rear curtain air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace LH side curtain air bag
module.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. CURTAIN MODULE LH
[VB-SHORT]
[B1151]The LH side rear curtain air bag module circuit is shorted to
some power supply circuits.
CURTAIN MODULE LH
[GND-SHORT]
[B1152]The LH side rear curtain air bag module circuit is shorted to
ground.
CURTAIN MODULE LH
[SHORT]
[B1153]The circuits for the LH side rear curtain air bag module are
shorted to each other.
CURTAIN MODULE RH
[OPEN]
[B1145]The RH side rear curtain air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace RH side curtain air bag
module.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness. CURTAIN MODULE RH
[VB-SHORT]
[B1146]The RH side rear curtain air bag module circuit is shorted to
some power supply circuits.
CURTAIN MODULE RH
[GND-SHORT]
[B1147]
The RH side rear curtain air bag module circuit is shorted to
ground.
CURTAIN MODULE RH
[SHORT]
[B1148]The circuits for the RH side rear curtain air bag module are
shorted to each other.
CONTROL UNIT
[B1XXX]Air bag diagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the air bag diagnosis
sensor unit.
OCCUPANT SENS C/U
[UNIT FAIL]
[B1017], [B1020] or [B1021]Occupant classification system is malfunctioning. 1. Replace RH front seat cushion/
occupant classification system
control unit assembly. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement

SRS-26
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
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.
DIAGNOSTIC PROCEDURE 3
Final Check of SRS Using CONSULT-II—Diagnosis Mode
Refer to GI-36, "CONSULT-II Start Procedure" .
OCCUPANT SENS C/U
[COMM FAIL]
[B1022]Communication between the occupant classification system
control unit and air bag diagnosis sensor unit is interrupted.1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace RH front seat cushion/
occupant classification system
control unit assembly.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness.
OCCUPANT SENS
[UNIT FAIL]
[B1018]Occupant classification sensor is malfunctioning. 1. Replace RH front seat cushion/
occupant classification system
control unit assembly.
BELT TENSION SENS
[UNIT FAIL]
[B1019]Belt tension sensor is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace RH front seat belt as-
sembly.
4. Replace RH front seat cushion/
occupant classification system
control unit assembly.
5. Replace the related harness.
PASS A/B INDCTR CKT
[B1023]Front passenger air bag off indicator is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace front passenger air bag
off indicator.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness.
FRONTAL COLLISION
DETECTION
[B1209]Driver and front passenger air bag modules are deployed. 1. Refer to SRS-49
.
SIDE COLLISION
DETECTION
[B1210]Side or curtain air bag modules are deployed (with side air
bags only).
ROLLOVER DETECTION
[B1211]Curtain air bag module and seat belt pre-tensioner are de-
ployed. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement

TROUBLE DIAGNOSIS
SRS-33
< SERVICE INFORMATION >
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1.CHECK CONDITION OF AIR BAG MODULE
Inspect for any deployed air bag modules or seat belt pre-tensioners.
Are any air bag modules or seat belt pre-tensioners deployed?
Yes >> Refer to SRS-49 .
No >> GO TO 2.
2.CHECK THE AIR BAG FUSE
Check 10A fuse [No. 13, located in the fuse block (J/B)].
Refer to PG-3
.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.CHECK AIR BAG FUSE AGAIN
Replace 10A fuse [No. 13, located in the fuse block (J/B)] and turn ignition switch ON.
Does the fuse blow again?
Yes >> Repair harness.
No >> Inspection End.
4.CHECK AIR BAG DIAGNOSIS SENSOR UNIT
Connect CONSULT-II and touch “START”.
Is
“AIR BAG” displayed on CONSULT-II?
Yes >> GO TO 5.
No >> Visually inspect the air bag diagnosis sensor unit har-
ness connections. If the connections are OK, replace
the air bag diagnosis sensor unit. Refer to SRS-47,
"Removal and Installation" .
5.CHECK HARNESS CONNECTION
Check for loose connections between the combination meter and the air bag diagnosis sensor unit.
OK or NG
OK >> Replace air bag diagnosis sensor unit. Refer to SRS-47, "Removal and Installation" .
NG >> Properly connect the combination meter and air bag diagnosis sensor unit harness connectors. If
“AIR BAG” warning lamp still does not turn off, replace the wiring harness.
Trouble Diagnosis: "AIR BAG" Warning Lamp Does Not Turn OnINFOID:0000000003532872
DIAGNOSTIC PROCEDURE 8
1.CHECK METER FUSE
Check the 10A fuse [No. 14, located in the fuse block (J/B)] .
Refer to PG-3
.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.REPLACE METER FUSE AND CHECK AGAIN
Replace 10A fuse [No. 14, located in the fuse block (J/B)] and turn ignition switch ON.
Does the fuse blow again?
Yes >> Replace harness.
No >> Inspection End.
BCIA0030E

FRONT PASSENGER AIR BAG MODULE
SRS-39
< SERVICE INFORMATION >
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FRONT PASSENGER AIR BAG MODULE
Removal and InstallationINFOID:0000000003532875
The passenger air bag module originally installed in the vehicle uses direct-connect style harness connectors.
Service replacement passenger air bag modules use tab-locking style harness connectors. If the passenger
air bag module is replaced or if the direct-connect harness connectors are damaged, the vehicle wiring har-
ness must be modified to allow connection of the service replacement passenger air bag module. Refer to
"WIRING HARNESS MODIFICATION" for wiring harness modification procedure.
REMOVAL
CAUTION:
• Do not attempt to repair or replace damaged direct-connect front passenger air bag module connec-
tors. If a direct-connect harness connector is damaged, the front passenger air bag must be
replaced and the wiring harness modified.
• Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait at least 3
minutes.
• Always work from the side of or under front passenger air bag module.
1. Remove the glove box. Refer to IP-10
.
2. Remove 2 nuts (through glove box opening) retaining front pas-
senger air bag module to instrument panel crossmember.
3. Disconnect the air bag module electrical connectors.
• For removal/installation of the direct-connect SRS connectors,
refer to SRS-6, "
Direct-connect SRS Component Connectors"
.
4. Remove the instrument panel assembly from the vehicle. Refer
to IP-10
.
5. Remove front passenger air bag module nuts and remove air
bag module from the instrument panel assembly.
CAUTION:
• When servicing the SRS, do not work from directly in front of
air bag module.
• Always place front passenger air bag module with caution
label side facing upward.
• Do not insert any foreign objects (screwdriver, etc.) into air
bag module or harness connectors.
• Do not disassemble air bag module.
• Do not use old nuts after removal; replace with new nuts.
• Do not expose the front passenger air bag module to tempera-
tures exceeding 90°C (194°F).
• Replace the air bag module if it has been dropped or sus-
tained an impact.
• Do not allow oil, grease or water to come in contact with the
air bag module.
• For removal/installation of the direct-connect SRS connec-
tors, refer to SRS-6, "
Direct-connect SRS Component Con-
nectors" .
INSTALLATION
Original Passenger Air Bag Module
WHIA0110E
WHIA0111E
SBF814E

SRS-40
< SERVICE INFORMATION >
FRONT PASSENGER AIR BAG MODULE
Installation is in the reverse order of removal.
• For removal/installation of the direct-connect SRS connectors, refer to SRS-6, "
Direct-connect SRS Compo-
nent Connectors".
CAUTION:
• Always work from the side of or under front passenger air bag module.
• After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer
to SRS-20, "
SRS Operation Check".
Service Replacement Passenger Air Bag Module
1. Install the front passenger air bag module to the instrument
panel pad assembly.
2. Install the instrument panel assembly. Refer to IP-10
.
3. Connect the front passenger air bag module harness connector to yellow 4-pin service replacement air
bag connector and fasten connector to mounting bracket.
CAUTION:
• Always work from the side of or under front passenger air bag module.
• After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer
to SRS-20, "
SRS Operation Check".
WIRING HARNESS MODIFICATION
The passenger air bag module originally installed in the vehicle uses direct-connect style harness connectors.
Service replacement passenger air bag modules use tab-locking style harness connectors. If the passenger
air bag module is replaced or if the direct-connect harness connectors are damaged, the vehicle wiring har-
ness must be modified to allow connection of the service replacement passenger air bag module.
NOTE:
The wiring harness modification is to be performed only if the vehicle is equipped with the original passenger
air bag which uses direct-connect harness connectors. If the passenger air bag is to be replaced in a vehicle
that has already had the service replacement passenger air bag installed, the wiring harness modification is
not required.
CAUTION:
• Do not attempt to repair or replace damaged direct-connect front passenger air bag module connec-
tors. If a direct-connect harness connector is damaged, the front passenger air bag must be
replaced and the wiring harness modified.
• Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait at least 3
minutes.
• Always work from the side of or under front passenger air bag module.
• After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer
to SRS-20, "
SRS Operation Check" .
1. Locate the yellow and orange direct-connect passenger air bag module harness connectors.
2. Use wire cutters to cut back both previously used direct-connect passenger air bag module harness con-
nectors from the vehicle wiring harness approximately 50 mm (1.9 in) from the connectors.
3. Remove approximately 150 mm (5.9 in) of the vehicle harness covering from the cut end.
WHIA0110E

FRONT PASSENGER AIR BAG MODULE
SRS-41
< SERVICE INFORMATION >
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4. Slide a piece of dual-wall heat shrink tubing (provided in the pas-
senger air bag service kit) onto each wire of the previously used
vehicle wiring harness.
5. Fold each wire back and insert into the end of the heat shrink
tubing so that the end of the wire is approximately centered in
the heat shrink tubing.
6. Use a heat gun to shrink the heat shrink tubing and seal the wire.
7. Use electrical tape to secure the modified circuits to the outside of the wiring harness.
8. Locate the front passenger air bag service replacement connec-
tor that is taped back to the main harness. Unwrap the tape to
access the yellow service replacement connector and remove
the dust cover from the connector.
LHIA0017E
WHIA0062E
WHIA0118E