ECU INFINITI QX56 2010 Factory Service Manual

SN-38
< ECU DIAGNOSIS >
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEM
ABNIA1147GB
Revision: April 20092010 QX56

SN
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEMSN-39
< ECU DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
ABNIA1148GB
Revision: April 20092010 QX56

SN-40
< ECU DIAGNOSIS >
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEM
ABNIA0088GB
Revision: April 20092010 QX56

SN
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEMSN-41
< ECU DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
ABNIA0089GB
Revision: April 20092010 QX56

SN-42
< ECU DIAGNOSIS >
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEM
ABNIA1318GB
Revision: April 20092010 QX56

SN
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEMSN-43
< ECU DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
ABNIA0091GB
Revision: April 20092010 QX56

SN-44
< ECU DIAGNOSIS >
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEM
DTC Index
INFOID:0000000005146212
DTC Malfunction Service Procedure
B2700 Front sonar sensor LH outer Replace sonar sensor. Refer to
SN-49, "
Removal and Installa-
tion".
B2701 Front sonar sensor LH outer harness 1. Check harness for open or short. Refer to SN-15, "
Diag-
nosis Procedure (With Front and Rear Sonar System)".
2. Replace sonar sensor. Refer to SN-49, "
Removal and In-
stallation".
B2702 Front sonar sensor RH outer Replace sonar sensor. Refer to
SN-49, "
Removal and Installa-
tion".
B2703 Front sonar sensor RH outer harness 1. Check harness for open or short. Refer to SN-15, "
Diag-
nosis Procedure (With Front and Rear Sonar System)".
2. Replace sonar sensor. Refer to SN-49, "
Removal and In-
stallation".
B2704 Rear sonar sensor LH outer Replace sonar sensor. Refer to
SN-49, "
Removal and Installa-
tion".
B2705 Rear sonar sensor LH outer harness 1. Check harness for open or short. Refer to SN-15, "
Diag-
nosis Procedure (With Front and Rear Sonar System)".
2. Replace sonar sensor. Refer to SN-49, "
Removal and In-
stallation".
B2706 Rear sonar sensor RH outer Replace sonar sensor. Refer to
SN-49, "
Removal and Installa-
tion".
B2707 Rear sonar sensor RH outer harness 1. Check harness for open or short. Refer to SN-15, "
Diag-
nosis Procedure (With Front and Rear Sonar System)".
2. Replace sonar sensor. Refer to SN-49, "
Removal and In-
stallation".
B2708 Rear sonar sensor LH inner Replace sonar sensor. Refer to
SN-49, "
Removal and Installa-
tion".
B2709 Rear sonar sensor LH inner harness 1. Check harness for open or short. Refer to SN-15, "
Diag-
nosis Procedure (With Front and Rear Sonar System)".
2. Replace sonar sensor. Refer to SN-49, "
Removal and In-
stallation".
B270A Rear sonar sensor RH inner Replace sonar sensor. Refer to
SN-49, "
Removal and Installa-
tion".
B270B Rear sonar sensor RH inner harness 1. Check harness for open or short. Refer to SN-15, "
Diag-
nosis Procedure (With Front and Rear Sonar System)".
2. Replace sonar sensor. Refer to SN-49, "
Removal and In-
stallation".
B270C Front sonar sensor LH inner Replace sonar sensor. Refer to
SN-49, "
Removal and Installa-
tion".
B270D Front sonar sensor LH inner harness 1. Check harness for open or short. Refer to SN-15, "
Diag-
nosis Procedure (With Front and Rear Sonar System)".
2. Replace sonar sensor. Refer to SN-49, "
Removal and In-
stallation".
B270E Front sonar sensor RH inner Replace sonar sensor. Refer to
SN-49, "
Removal and Installa-
tion".
B270F Front sonar sensor RH inner harness 1. Check harness for open or short. Refer to SN-15, "
Diag-
nosis Procedure (With Front and Rear Sonar System)".
2. Replace sonar sensor. Refer to SN-49, "
Removal and In-
stallation".
Revision: April 20092010 QX56

SR-12
< ON-VEHICLE REPAIR >
FRONT PASSENGER AIR BAG MODULE
• 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 SRC-13, "
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.
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
Revision: April 20092010 QX56

SR-18
< ON-VEHICLE REPAIR >
DIAGNOSIS SENSOR UNIT
• After replacing the air bag diagnosis sensor unit, confirm using CONSULT-III that the ECU discrimi-
nated number (identification number) of the new replacement air bag diagnosis sensor unit matches
the ECU discriminated number (identification number ) of the replaced (old) air bag diagnosis sensor
unit.
NOTE:
If the ECU discriminated number of the new replacement air bag diagnosis sensor unit differs from the ECU
discriminated number of the replaced air bag diagnosis sensor unit, reconfirm the parts information and verify
that the correct air bag diagnosis sensor unit was installed.
Revision: April 20092010 QX56

SRC-2
Diagnosis Procedure (Component Diagnosis) ........39
B1086 – B1089 SEAT BELT PRE-TENSION-
ER LH .................................................................
41
Description ........................................................... ...41
DTC Logic ...............................................................41
Diagnosis Procedure (Component Diagnosis) ........42
B1081 – B1084 SEAT BELT PRE-TENSION-
ER RH ................................................................
44
Description ..............................................................44
DTC Logic ...............................................................44
Diagnosis Procedure (Component Diagnosis) ........45
B1182 - B1185 SEAT BELT BUCKLE PRE-
TENSIONER LH .................................................
47
Description ........................................................... ...47
DTC Logic ...............................................................47
Diagnosis Procedure (Component Diagnosis) ........48
B1177 - B1180 SEAT BELT BUCKLE PRE-
TENSIONER RH ................................................
50
Description ........................................................... ...50
DTC Logic ...............................................................50
Diagnosis Procedure (Component Diagnosis) ........51
B1033 – B1035 CRASH ZONE SENSOR .........53
Description ........................................................... ...53
DTC Logic ...............................................................53
Diagnosis Procedure (Component Diagnosis) ........54
B1118 – B1120 SATELLITE SENSOR LH ........56
Description ........................................................... ...56
DTC Logic ...............................................................56
Diagnosis Procedure (Component Diagnosis) ........57
B1113 – B1115 SATELLITE SENSOR RH .......59
Description ........................................................... ...59
DTC Logic ...............................................................59
Diagnosis Procedure (Component Diagnosis) ........60
B1XXX AIR BAG DIAGNOSIS SENSOR UNIT ...62
Description ........................................................... ...62
DTC Logic ...............................................................62
Diagnosis Procedure (Component Diagnosis) ........63
B1023 PASSENGER AIR BAG OFF INDICA-
TOR ....................................................................
64
Description ........................................................... ...64
DTC Logic ...............................................................64
Diagnosis Procedure (Component Diagnosis) ........65
B1017 – B1022 OCCUPANT CLASSIFICA-
TION SYSTEM ................................................ ...
67
Description ........................................................... ...67
DTC Logic ...............................................................67
Diagnosis Procedure (Component Diagnosis) ........68
B1209 – B1211 COLLISION DETECTION ........70
Description ........................................................... ...70
DTC Logic ...............................................................70
Diagnosis Procedure (Component Diagnosis) ........70
ECU DIAGNOSIS .......................................71
DIAGNOSIS SENSOR UNIT .............................71
Wiring Diagram .................................................... ...71
Trouble Diagnosis with CONSULT-III .....................80
Trouble Diagnosis without CONSULT-III ................84
SYMPTOM DIAGNOSIS ............................89
SRS AIR BAG SYSTEM ................................. ...89
"AIR BAG" Warning Lamp Does Not Turn Off ..... ...89
"AIR BAG" Warning Lamp Does Not Turn On ........89
PASSENGER SEAT BELT WARNING SYS-
TEM ....................................................................
91
Seat Belt Warning System Does Not Function .... ...91
PRECAUTION ............................................92
PRECAUTIONS .............................................. ...92
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. ...
92
Precaution for SRS "AIR BAG" and "SEAT BELT
PRE-TENSIONER" Service ................................. ...
92
Occupant Classification System Precaution ...........92
Revision: April 20092010 QX56