sensor INFINITI QX56 2006 Factory Service Manual

SRS-24
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
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 visible damage.
3. Replace front passenger air bag module.
4. Replace the air bag diagnosis sen- sor 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 visible damage.
3. Replace the crash zone sensor.
4. Replace the air bag diagnosis sen- sor 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 visible damage.
3. Replace front LH seat back assem- bly (front LH side air bag module).
4. Replace the air bag diagnosis sen- sor 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
other.
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. Replace front RH seat back assem- bly (front RH side air bag module).
4. Replace the air bag diagnosis sen- sor 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
other.
SATELLITE SENS LH [UNIT FAIL]
[B1118] or [B1119]
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 visible damage.
3. Replace the LH side air bag (satel- lite) sensor.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
Diagnostic item
Explanation Repair order
Recheck SRS at each replacement

TROUBLE DIAGNOSISSRS-25
C
DE
F
G
I
J
K L
M A
B
SRS
Revision: November 2009 2006 QX56
SATELLITE SENS RH
[UNIT FAIL]
[ B 111 3 ] o r [ B 111 4 ]
SATELLITE SENS RH [COMM FAIL]
[B1115]

RH side air bag (satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace the RH side air bag (satel- lite) sensor.
4. Replace the air bag diagnosis sen- sor 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 visible damage.
3. Replace front LH seat belt pre-ten- sioner.
4. Replace the air bag diagnosis sen- sor 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 visible damage.
3. Replace front RH seat belt pre-ten- sioner.
4. Replace the air bag diagnosis sen- sor 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
shorted 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 visible damage.
3. Replace front LH seat belt buckle pre-tensioner.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
PRE-TEN2 FRONT LH
[VB-SHORT]
[B1183]

The circuit for front LH seat belt buckle pre-tensioner is
shorted to some power supply circuit.
PRE-TEN2 FRONT LH [GND-SHORT][B1184]

The circuit for front LH seat belt buckle pre-tensioner is
shorted to ground.
PRE-TEN2 FRONT LH [SHORT][B1185]

The circuits for the front LH seat belt buckle pre-tensioner
are shorted to each other.
Diagnostic item
Explanation Repair order
Recheck SRS at each replacement

TROUBLE DIAGNOSISSRS-27
C
DE
F
G
I
J
K L
M A
B
SRS
Revision: November 2009 2006 QX56
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 visible damage.
3. Replace RH side curtain air bag module.
4. Replace the air bag diagnosis sen- sor 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 sen- sor unit.
OCCUPANT SENS C/U [UNIT FAIL]
[B1017] or [B1021]

The OCS control unit is malfunctioning. 1. Replace RH front seat cushion/
occupant classification system con-
trol unit assembly.
OCCUPANT SENS C/U [UNIT FAIL] [B1020]

The OCS control unit is malfunctioning. 1. Replace the harness if it has visible
damage.
2. Replace the RH front seat cushion assembly. Do not disassemble the
seat cushion assembly.
3. Replace the RH front seat belt assembly.
OCCUPANT SENS C/U [COMM FAIL][B1022]

Communication between the OCS control unit and air bag
diagnosis sensor unit is interrupted. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace RH front seat cushion assembly. Do not disassemble the
seat cushion assembly.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
OCCUPANT SENS [UNIT FAIL][B1018]

OCS sensor is malfunctioning. 1. Visually check the wiring harness
connection to the OCS sensor.
2. Replace RH front seat cushion assembly. Do not disassemble the
seat cushion 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 visible damage.
3. Replace RH front seat belt assem- bly.
4. Replace RH front seat cushion assembly. Do not disassemble the
seat cushion assembly.
5. Replace the related harness.
Diagnostic item
Explanation Repair order
Recheck SRS at each replacement

TROUBLE DIAGNOSISSRS-33
C
DE
F
G
I
J
K L
M A
B
SRS
Revision: November 2009 2006 QX56
14. Repair the system as outlined by the “Repair order” in “Intermittent 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.
15. Go to SRS-28, "
DIAGNOSTIC PROCEDURE 3" , for final checking.
CONSULT-II Diagnostic Code Chart ("SELF-DIAG [PAST]" or "TROUBLE DIAG RECORD")
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-28, "DIAGNOSTIC PRO-
CEDURE 3" .

Self-diagnostic result “SELF-DIAG
[PAST] ” (previously stored in the
memory) might not be erased
after repair.

Intermittent malfunction has been
detected in the past.

Go to SRS-31, "DIAGNOSTIC PRO-
CEDURE 4 (CONTINUED FROM
DIAGNOSTIC PROCEDURE 2)" .

Go to SRS-31, "DIAGNOSTIC PRO-
CEDURE 5" .

No malfunction is detected. —
DRIVER AIRBAG MODULE [OPEN]
[B1049] or [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. Replace driver air bag module.
4. Replace the spiral cable.
5. Replace the air bag diagnosis sen- sor unit.
6. Replace the related harness.
DRIVER AIRBAG MODULE
[VB-SHORT]
[B1050] or [B1055]

Driver air bag module circuit is shorted to some power sup-
ply 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.
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 visible damage.
3. Replace front passenger air bag module.
4. Replace the air bag diagnosis sen- sor 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 visible damage.
3. Replace the crash zone sensor.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.

SRS-34
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
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. Replace front LH seat back assem- bly (front LH side air bag module).
4. Replace the air bag diagnosis sen- sor 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
other.
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. Replace front RH seat back assem- bly (front RH side air bag module).
4. Replace the air bag diagnosis sen- sor 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
other.
SATELLITE SENS LH [UNIT FAIL]
[B1118] or [B1119]
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 visible damage.
3. Replace the LH side air bag (satel- lite) sensor.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
SATELLITE SENS RH [UNIT FAIL]
[B1113] or [B1114]
SATELLITE SENS RH
[COMM FAIL][B1115]

RH side air bag (satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace the RH side air bag (satel- lite) sensor.
4. Replace the air bag diagnosis sen- sor 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 visible damage.
3. Replace front LH seat belt pre-ten- sioner.
4. Replace the air bag diagnosis sen- sor 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.
Diagnostic item
Explanation Repair order
Recheck SRS at each replacement

SRS-36
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
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 visible damage.
3. Replace RH side curtain air bag module.
4. Replace the air bag diagnosis sen- sor 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 visible damage.
3. Replace LH side curtain air bag module.
4. Replace the air bag diagnosis sen- sor 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 visible damage.
3. Replace RH side curtain air bag module.
4. Replace the air bag diagnosis sen- sor 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 sen- sor unit.
OCCUPANT SENS C/U [UNIT FAIL]
[B1017] or [B1021]

The OCS control unit is malfunctioning. 1. Replace RH front seat cushion/
occupant classification system con-
trol unit assembly.
OCCUPANT SENS C/U [UNIT FAIL] [B1020]

The OCS control unit is malfunctioning. 1. Replace the harness if it has visible
damage.
2. Replace the RH front seat cushion assembly. Do not disassemble the
seat cushion assembly.
3. Replace the RH front seat belt assembly.
Diagnostic item
Explanation Repair order
Recheck SRS at each replacement

TROUBLE DIAGNOSISSRS-37
C
DE
F
G
I
J
K L
M A
B
SRS
Revision: November 2009 2006 QX56
OCCUPANT SENS C/U
[COMM FAIL][B1022]

Communication between the OCS control unit and air bag
diagnosis sensor unit is interrupted. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible damage.
3. Replace RH front seat cushion assembly. Do not disassemble the
seat cushion assembly.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
OCCUPANT SENS [UNIT FAIL]
[B1018]

OCS sensor is malfunctioning. 1. Visually check the wiring harness
connection to the OCS sensor.
2. Replace RH front seat cushion assembly. Do not disassemble the
seat cushion 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 visible damage.
3. Replace RH front seat belt assem- bly.
4. Replace RH front seat cushion assembly. Do not disassemble the
seat cushion 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 visible damage.
3. Replace front passenger air bag off indicator.
4. Replace the air bag diagnosis sen- sor unit.
5. Replace the related harness.
FRONTAL COLLISION DETECTION[B1209]

Driver and front passenger air bag modules are deployed. 1. Refer to SRS-60, "COLLISION
DIAGNOSIS" .
SIDE COLLISION DETECTION
[B1210]

Side or curtain air bag modules are deployed (with side air
bags only). 1. Refer to SRS-60, "COLLISION
DIAGNOSIS" .
ROLLOVER DETECTION [B1211]

Curtain air bag module and seat belt pre-tensioner are
deployed. 1. Refer to SRS-60, "COLLISION
DIAGNOSIS" .
Diagnostic item Explanation
Repair order
Recheck SRS at each replacement

SRS-44
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
Trouble Diagnosis: “AIR BAG” Warning Lamp Does Not Turn OffEHS0016V
DIAGNOSTIC PROCEDURE 6
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-60, "COLLISION DIAGNOSIS" .
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-4, "
POWER SUPPLY ROUTING CIRCUIT" .
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-58,
"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-58, "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.
BCIA0030E

TROUBLE DIAGNOSISSRS-45
C
DE
F
G
I
J
K L
M A
B
SRS
Revision: November 2009 2006 QX56
Trouble Diagnosis: “AIR BAG” Warning Lamp Does Not Turn OnEHS0016W
DIAGNOSTIC PROCEDURE 7
1. CHECK METER FUSE
Check the 10A fuse [No. 14, located in the fuse block (J/B)].
Refer to PG-4, "
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 the fuse block (J/B)] and turn ignition switch ON.
Does the fuse blow again?
Yes >> Repair harness.
No >> Inspection End.
3. CHECK HARNESS CONNECTION BETWEEN AIR BAG DIAGNOSIS SENSOR UNIT AND COMBINA-
TION METER Disconnect the air bag diagnosis sensor unit harness connectors and turn ignition switch ON.
Does
“AIR BAG” warning lamp turn on?
Yes >> Replace the air bag diagnosis sensor unit. Refer to SRS-58, "Removal and Installation" .
No >> Check the combination meter ground circuits.

SPIRAL CABLESRS-49
C
DE
F
G
I
J
K L
M A
B
SRS
Revision: November 2009 2006 QX56
4. While pressing tabs, pull lighting and turn signal switch toward
driver door and disconnect from base.
5. Remove the screws, release the clip, and remove the spiral cable.
CAUTION:

Do not disassemble spiral cable.

Do not apply lubricant to the spiral cable.
6. Remove the spiral cable connectors. CAUTION:
With the steering linkage disconnected, the spiral cable may snap by turning the steering wheel
beyond the limited number of turns. The spiral cable can be turned counterclockwise about 2.5
turns from the neutral position.
INSTALLATION
Installation is in the reverse order of removal.

Align spiral cable correctly when installing steering wheel. Make
sure that the spiral cable is in the neutral position. The neutral
position is detected by turning left 2.6 revolutions from the right
end position and ending with the knob at the top.

If equipped with VDC, refer to BRC-62, "Adjustment of Steering
Angle Sensor Neutral Position" for steering angle sensor adjust-
ment.

After the work is completed, perform self-diagnosis to make sure
no malfunction is detected. Refer to SRS-20, "
SRS Operation
Check" .
CAUTION:

The spiral cable may snap due to steering operation if the
cable is not installed in the correct position.

With the steering linkage disconnected, the cable may snap
by turning the steering wheel beyond the limited number of
turns. The spiral cable can be turned counterclockwise
about 2.5 turns from the right end position.
LHIA0035E
LHIA0036E
WGIA0038E
PHIA0275E