2008 INFINITI QX56 Factory Service Manual

Page 2737 of 4083

INFINITI QX56 2008  Factory Service Manual PCS-4
< BASIC INSPECTION >[IPDM E/R]
DIAGNOSIS AND REPAIR WORKFLOW
Inspect according to Diagnostic Procedure of the system.
NOTE:
The Diagnostic Procedure described based on open circuit inspection. A

Page 2738 of 4083

INFINITI QX56 2008  Factory Service Manual PCS
RELAY CONTROL SYSTEMPCS-5
< FUNCTION DIAGNOSIS > [IPDM E/R]
C
D
E
F
G H
I
J
K L
B A
O P
N
FUNCTION DIAGNOSIS
RELAY CONTROL SYSTEM
System DiagramINFOID:0000000001696480
AWMIA1109GB
Revision: March

Page 2739 of 4083

INFINITI QX56 2008  Factory Service Manual PCS-6
< FUNCTION DIAGNOSIS >[IPDM E/R]
RELAY CONTROL SYSTEM
System Description
INFOID:0000000001696481
IPDM E/R activates the internal cont rol circuit to perform the relay ON-OFF control according to

Page 2740 of 4083

INFINITI QX56 2008  Factory Service Manual PCS
RELAY CONTROL SYSTEMPCS-7
< FUNCTION DIAGNOSIS > [IPDM E/R]
C
D
E
F
G H
I
J
K L
B A
O P
N
Component Parts LocationINFOID:0000000001696482
1. IPDM E/R E118, E119, E120, E121, 
E122, E123, E124
ALMI

Page 2741 of 4083

INFINITI QX56 2008  Factory Service Manual PCS-8
< FUNCTION DIAGNOSIS >[IPDM E/R]
POWER CONTROL SYSTEM
POWER CONTROL SYSTEM
System DiagramINFOID:0000000001696483
System DescriptionINFOID:0000000001696484
COOLING FAN CONTROL
IPDM E/R controls t

Page 2742 of 4083

INFINITI QX56 2008  Factory Service Manual PCS
SIGNAL BUFFER SYSTEMPCS-9
< FUNCTION DIAGNOSIS > [IPDM E/R]
C
D
E
F
G H
I
J
K L
B A
O P
N
SIGNAL BUFFER SYSTEM
System DiagramINFOID:0000000001696485
System DescriptionINFOID:0000000001696486
IPDM

Page 2743 of 4083

INFINITI QX56 2008  Factory Service Manual PCS-10
< FUNCTION DIAGNOSIS >[IPDM E/R]
POWER CONSUMPTION CONTROL SYSTEM
POWER CONSUMPTIO
N CONTROL SYSTEM
System DiagramINFOID:0000000001696487
System DescriptionINFOID:0000000001696488
OUTLINE
• I

Page 2744 of 4083

INFINITI QX56 2008  Factory Service Manual PCS
POWER CONSUMPTION CONTROL SYSTEMPCS-11
< FUNCTION DIAGNOSIS > [IPDM E/R]
C
D
E
F
G H
I
J
K L
B A
O P
N
Component Parts LocationINFOID:0000000001696489
1. IPDM E/R E118, E119, E120, E121, 
E122, E1