2008 INFINITI QX56 ECU

SN-38
< ECU DIAGNOSIS >
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEM
AANIA0142GB
Revision: March 20102008 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
AANIA0143GB
Revision: March 2010 2008 QX56

SN-40
< ECU DIAGNOSIS >
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEM
AANIA0144GB
Revision: March 20102008 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
ALNIA0925GB
Revision: March 2010 2008 QX56

SN-42
< ECU DIAGNOSIS >
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEM
AANIA0150GB
Revision: March 20102008 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
AANIA0151GB
Revision: March 2010 2008 QX56

SN-44
< ECU DIAGNOSIS >
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEM
DTC Index
INFOID:0000000001754075
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.
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.
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.
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.
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.
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.
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.
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.
2. Replace sonar sensor. Refer to
SN-49, "
Removal and In-
stallation".
Revision: March 2010 2008 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: March 2010 2008 QX56