2005 INFINITI QX4 Factory Service Manual

Page 2321 of 3419

INFINITI QX4 2005  Factory Service Manual LAN-42
[CAN]
CAN SYSTEM (TYPE 1)
Revision: October 20052005 QX56
3. CHECK HARNESS FOR OPEN CIRCUIT
Check continuity between harness connector M40 terminals 51J (L),
52J (P) and data link connector M22

Page 2322 of 3419

INFINITI QX4 2005  Factory Service Manual CAN SYSTEM (TYPE 1)
LAN-43
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: October 20052005 QX56
ECM Circuit CheckUKS0018L
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery

Page 2323 of 3419

INFINITI QX4 2005  Factory Service Manual LAN-44
[CAN]
CAN SYSTEM (TYPE 1)
Revision: October 20052005 QX56
Driver Seat Control Unit Circuit CheckUKS0018N
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery termi

Page 2324 of 3419

INFINITI QX4 2005  Factory Service Manual CAN SYSTEM (TYPE 1)
LAN-45
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: October 20052005 QX56
Display Control Unit Circuit CheckUKS0018P
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the

Page 2325 of 3419

INFINITI QX4 2005  Factory Service Manual LAN-46
[CAN]
CAN SYSTEM (TYPE 1)
Revision: October 20052005 QX56
Data Link Connector Circuit CheckUKS0018R
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.

Page 2326 of 3419

INFINITI QX4 2005  Factory Service Manual CAN SYSTEM (TYPE 1)
LAN-47
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: October 20052005 QX56
Front Air Control Circuit CheckUKS0018T
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the ne

Page 2327 of 3419

INFINITI QX4 2005  Factory Service Manual LAN-48
[CAN]
CAN SYSTEM (TYPE 1)
Revision: October 20052005 QX56
IPDM E/R Circuit CheckUKS0018V
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check te

Page 2328 of 3419

INFINITI QX4 2005  Factory Service Manual CAN SYSTEM (TYPE 1)
LAN-49
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: October 20052005 QX56
2. CHECK HARNESS FOR SHORT CIRCUIT
With all module and control unit connectors disconnected, check
continuit