wiring INFINITI M35 2007 Factory Service Manual

TROUBLE DIAGNOSIS
SRS-9
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2007 April2007 M35/M45
TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionNHS00090
CAUTION:

Do not use electrical test equipment on any circuit related to the SRS unless instructed in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

Do not repair, splice or modify the SRS wiring harness. If the harness is damaged, replace it with a
new one.

Keep ground portion clean.
DIAGNOSIS FUNCTION
The SRS self-diagnosis results can be read by using “AIR BAG” warning lamp and/or CONSULT-II.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system mal-
function through the operation of the “AIR BAG” warning lamp.
The Diagnosis mode allows the technician to locate and inspect the malfunctioning part.
The mode applications for the “AIR BAG” warning lamp and CONSULT-II are as follows:
HOW TO PERFORM TROUBLE DIAGNOSIS FOR QUICK AND ACCURATE REPAIR
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a malfunction. It is important to fully understand the symp-
toms or conditions for a customer complaint.
Information from Customer
WHAT..... Vehicle model
WHEN..... Date, Frequencies
WHERE..... Road conditions
HOW..... Operating conditions, Symptoms
Preliminary Check
Make sure the following parts are in good order.

Battery (Refer to SC-4, "How to Handle Battery" .)

Fuse (Refer to SRS-13, "Wiring Diagram — SRS —" .)

System component-to-harness connections
User mode Diagnosis mode Display type
“AIR BAG” warning lamp X X ON-OFF operation
CONSULT-II — X Monitoring

TROUBLE DIAGNOSIS
SRS-13
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2007 April2007 M35/M45
Wiring Diagram — SRS —NHS00093
THWT0226E

TROUBLE DIAGNOSIS
SRS-23
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2007 April2007 M35/M45
DRIVER AIRBAG
MODULE
[OPEN]
[B1049] [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 the driver air bag module. .)
4. Replace the spiral cable.
5. Replace the diagnosis sensor unit.
6. Replace the related harness. DRIVER AIRBAG
MODULE
[VB-SHORT]
[B1050] [B1055]

Driver air bag module circuit is shorted to a power supply circuit
(including the spiral cable).
DRIVER AIRBAG
MODULE
[GND-SHORT]
[B1051] [B1056]

Driver air bag module circuit is shorted to ground (including the
spiral cable).
DRIVER AIRBAG
MODULE
[SHORT]
[B1052] [B1057]

Driver air bag module circuit is shorted between lines.
ASSIST A/B MODULE
[OPEN]
[B1065] [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 the front passenger air bag
module.
4. Replace the diagnosis sensor unit.
5. Replace the related harness. ASSIST A/B MODULE
[VB-SHORT]
[B1066] [B1071]

Front passenger air bag module circuit is shorted to a power
supply circuit.
ASSIST A/B MODULE
[GND-SHORT]
[B1067] [B1072]

Front passenger air bag module circuit is shorted to ground.
ASSIST A/B MODULE
[SHORT]
[B1068] [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. Replace the crash zone sensor.
4. Replace the 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 visible
damage.
3. Replace the front LH seatback
assembly (front LH side air bag
module).
4. Replace the diagnosis sensor unit.
5. Replace the related harness. 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. Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”

SRS-24
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
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 the front RH seatback
assembly (front RH side air bag
module).
4. Replace the diagnosis sensor unit.
5. Replace the related harness. 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]
[ B 111 8 ]
[ B 111 9 ]
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. Replace the LH side air bag (Satel-
lite) sensor.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
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. Replace the RH side air bag (Satel-
lite) sensor.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
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. Replace the front LH seat belt.
4. Replace the diagnosis sensor unit.
5. Replace the related harness. 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. Replace the front RH seat belt.
4. Replace the diagnosis sensor unit.
5. Replace the related harness. 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. Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”

TROUBLE DIAGNOSIS
SRS-25
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2007 April2007 M35/M45
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. Replace the LH side curtain air bag
module.
4. Replace the diagnosis sensor unit.
5. Replace the related harness. CURTAIN MODULE LH
[VB-SHORT]
[B1151]

LH side curtain air bag module circuit is shorted to some power
supply circuits.
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.
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. Replace the RH side curtain air bag
module.
4. Replace the diagnosis sensor unit.
5. Replace the related harness. 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.
OCCUPANT SENS C/U
[UNIT FAIL]
[B1017]
[B1020]
[B1021]

Occupant classification system control unit is malfunctioning. 1. Visuary check the wiring harness
connection.
2. Replace front passenger seat cush-
ion/occupant classification system
control unit assembly.
OCCUPANT SENS C/U
[COMM FAIL]
[B1022]

Communication between the occupant classification system
control unit and air bag diagnosis sensor unit is interrupted, or
occupant classification system control unit is malfunctioning.1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front passenger seat cush-
ion/occupant classification system
control unit assembly.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
OCCUPANT SENS
[UNIT FAIL]
[B1018]

Occupant classification sensor is malfunctioning.
Replace front passenger seat cush-
ion/occupant classification system
control unit assembly. Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”

SRS-26
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
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.
BELT TENSION SENS
[UNIT FAIL]
[B1019]
Belt tension sensor circuit between belt tension sensor and
occupant classification system control unit, or diagnosis sensor
unit is malfunctioning.1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front seat belt (passenger
side) assembly.
4. Replace front passenger seat cush-
ion/occupant classification system
control unit assembly.
PASS A/B INDCTR
CKT
[B1023]

Front passenger air bag off indicator or related circuit is mal-
functioning.1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front passenger air bag off
indicator (The installation position is
an overhead consoul).
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
FRONTAL COLLISION
DETECTION
[B1209]

Seat belt pre-tensioner and front air bag are deployed.
Go to SRS-54, "For Frontal Colli-
sion" .
SIDE COLLISION
DETECTION
[B1210]

Side and curtain air bag is deployed.
Go to SRS-56, "For Side Collision" . Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”

SRS-30
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
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-diagnosis 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 checking.
DTC No. Index (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)
SRS697
SHIA0182E
Diagnostic item ExplanationRepair 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 AIRBAG
MODULE
[OPEN]
[B1049] [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 AIRBAG
MODULE
[VB-SHORT]
[B1050] [B1055]

Driver air bag module circuit is shorted to a power supply circuit
(including the spiral cable).
DRIVER AIRBAG
MODULE
[GND-SHORT]
[B1051] [B1056]

Driver air bag module circuit is shorted to ground (including the
spiral cable).
DRIVER AIRBAG
MODULE
[SHORT]
[B1052] [B1057]

Driver air bag module circuit is shorted between lines.

TROUBLE DIAGNOSIS
SRS-31
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2007 April2007 M35/M45
ASSIST A/B MODULE
[OPEN]
[B1065] [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]
[B1066] [B1071]

Front passenger air bag module circuit is shorted to a power
supply circuit.
ASSIST A/B MODULE
[GND-SHORT]
[B1067] [B1072]

Front passenger air bag module circuit is shorted to ground.
ASSIST A/B MODULE
[SHORT]
[B1068] [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 ExplanationRepair order
“Recheck SRS at each replacement”

SRS-32
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
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 circuits.
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 ExplanationRepair order
“Recheck SRS at each replacement”

TROUBLE DIAGNOSIS
SRS-33
C
D
E
F
G
I
J
K
L
MA
B
SRS
Revision: 2007 April2007 M35/M45
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.
OCCUPANT SENS C/U
[UNIT FAIL]
[B1017]
[B1020]
[B1021]

Occupant classification system control unit is malfunctioning.
1. Replace front passenger seat cush-
ion/occupant classification system
control unit assembly.
OCCUPANT SENS C/U
[COMM FAIL]
[B1022]

Communication between the occupant classification system
control unit and air bag diagnosis sensor unit is interrupted,
diagnosis sensor unit is malfunction, or occupant classification
system control unit is malfunctioning.1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front passenger seat cush-
ion/occupant classification system
control unit assembly.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
OCCUPANT SENS
[UNIT FAIL]
[B1018]

Occupant classification sensor is malfunctioning.
Replace front passenger seat cush-
ion/occupant classification system
control unit assembly.
BELT TENSION SENS
[UNIT FAIL]
[B1019]

Belt tension sensor circuit between belt tension sensor and
occupant classification system control unit, or diagnosis sensor
unit is malfunctioning.1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front seat belt (passenger
side) assembly.
4. Replace front passenger seat cush-
ion/occupant classification system
control unit assembly. Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”