INFINITI QX56 2004 Factory Service Manual

SRS-30
TROUBLE DIAGNOSIS
Revision: August 20072004 QX56
DIAGNOSTIC PROCEDURE 4 (CONTINUED FROM DIAGNOSTIC PROCEDURE 2)
Check SRS Repair History
1. CONSIDER POSSIBILITY THAT SELF-DIAGNOSTIC RESULT WAS NOT ERASED AFTER REPAIR
Check repair history of the SRS.
Have any previous repairs been made to the SRS?
Yes >> Self-diagnostic result “SELF-DIAG [PAST]” (previously stored in the memory) might not be erased
after repair. Go to SRS-28, "
DIAGNOSTIC PROCEDURE 3" .
No >> Go to SRS-22, "
DIAGNOSTIC PROCEDURE 2" .
DIAGNOSTIC PROCEDURE 5
Check SRS Intermittent Malfunction Using CONSULT-II—Diagnosis Mode
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunction might be detected
in self-diagnosis depending on control unit which carries out CAN communication.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector.
3. Turn ignition switch ON.
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “AIR BAG”.
If "AIR BAG" is not indicated, refer to GI-39, "
CONSULT-II Data
Link Connector (DLC) Circuit" .
BBIA0369E
BCIA0029E
BCIA0030E

TROUBLE DIAGNOSIS
SRS-31
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: August 20072004 QX56
6. Touch “SELF-DIAG [PAST]”.
7. If diagnostic codes are displayed on “SELF-DIAG [PAST]”, go to
step 10.
If no malfunction is detected on “SELF-DIAG [PAST]”, touch
“BACK” and go back to “SELECT DIAG MODE”.
8. Touch “TROUBLE DIAG RECORD”.
NOTE:
With “TROUBLE DIAG RECORD”, diagnosis results previ-
ously erased by a reset operation can be displayed.
9. Diagnostic code is displayed on “TROUBLE DIAG RECORD”.
10. Touch “PRINT”.
11. Compare diagnostic codes to SRS-32, "
CONSULT-II Diagnostic
Code Chart ("SELF-DIAG [PAST]" or "TROUBLE DIAG
RECORD")" .
12. Touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears.
13. Turn ignition switch OFF, then turn off and disconnect CON-
SULT-II, and both battery cables.
BCIA0031E
WHIA0152E
SRS7 02
BCIA0031E
WHIA0153E

SRS-32
TROUBLE DIAGNOSIS
Revision: August 20072004 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 ExplanationRepair order
Recheck SRS at each replacement
NO DTC IS DETECTEDWhen 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-30, "DIAGNOSTIC PRO-
CEDURE 4 (CONTINUED FROM
DIAGNOSTIC PROCEDURE 2)" .

Go to SRS-30, "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.

TROUBLE DIAGNOSIS
SRS-33
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: August 20072004 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]
[ B 111 5 ]

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 ExplanationRepair order
Recheck SRS at each replacement

SRS-34
TROUBLE DIAGNOSIS
Revision: August 20072004 QX56
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.
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 visible
damage.
3. Replace front RH seat belt buckle
pre-tensioner.
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness. PRE-TEN2 FRONT RH
[VB-SHORT]
[B1178]

The circuit for front RH seat belt buckle pre-tensioner is
shorted to some power supply circuit.
PRE-TEN2 FRONT RH
[GND-SHORT]
[B1179]

The circuit for front RH seat belt buckle pre-tensioner is
shorted to ground.
PRE-TEN2 FRONT RH
[SHORT]
[B1180]

The circuits for the front RH seat belt buckle pre-tensioner
are shorted to each other.
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 visible
damage.
3. Replace LH side curtain air bag
module.
4. Replace the air bag diagnosis sen-
sor 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. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement

TROUBLE DIAGNOSIS
SRS-35
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: August 20072004 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 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 con-
trol unit assembly.
OCCUPANT SENS C/U
[COMM FAIL]
[B1022]

Communication between the occupant classification sys-
tem control unit and air bag diagnosis sensor unit is inter-
rupted.1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace RH front seat cushion/
occupant classification system con-
trol unit assembly.
4. Replace the air bag diagnosis sen-
sor 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 con-
trol unit assembly. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement

SRS-36
TROUBLE DIAGNOSIS
Revision: August 20072004 QX56
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/
occupant classification system con-
trol unit assembly.
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. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement

TROUBLE DIAGNOSIS
SRS-37
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: August 20072004 QX56
Trouble Diagnosis Without CONSULT-IIEHS000WI
DIAGNOSTIC PROCEDURE 6
Inspect SRS Malfunction Using "AIR BAG" Warning Lamp—Diagnosis Mode
NOTE:
SRS will not enter Diagnosis mode if no malfunction is detected in User mode.
1. Turn ignition switch ON.
2. After “AIR BAG” warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second.
3. Wait more than 3 seconds.
4. Repeat steps 1 to 3 two more times (3 times total).
5. Turn ignition switch ON.
SRS is now in Diagnosis mode.
"AIR BAG" warning lamp operates in Diagnosis mode as follows:

SRS-38
TROUBLE DIAGNOSIS
Revision: August 20072004 QX56
WARNING LAMP FLASH CODE CHART
SHIA0026E
WHIA0260E
WHIA0198E
WHIA0261E

TROUBLE DIAGNOSIS
SRS-39
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: August 20072004 QX56
WHIA0200E
WHIA0262E
WHIA0250E
WHIA0263E