Infiniti G35 (V35). Manual — part 657
PG-22
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Concept of Auto Active Test
●
IPDM E/R actuates auto active test mode when it receives door switch signal from BCM via CAN commu-
nication line. Therefore, when auto active test mode is activated successfully, CAN communication
between IPDM E/R and BCM is normal.
●
If any of systems controlled by IPDM E/R cannot be operated, possible cause can be easily diagnosed
using auto active test.
Diagnosis chart in auto active test mode
Symptom
Inspection contents
Possible cause
Rear window defogger
does not operate.
Perform auto active
test. Does rear win-
dow defogger oper-
ate?
YES
●
BCM signal input circuit malfunction
NO
●
Rear window defogger relay malfunction
●
Harness/connector malfunction between IPDM E/R and rear window
defogger relay
●
Open circuit of rear window defogger
●
IPDM E/R malfunction
Any of front wipers, tail
and parking lamps, front
fog lamps, and head
lamps (Hi, Lo) do not
operate.
Perform auto active
test. Does system in
question operate?
YES
●
BCM signal input system malfunction
NO
●
Lamp/wiper motor malfunction
●
Lamp/wiper motor ground circuit malfunction
●
Harness/connector malfunction between IPDM E/R and system in question
●
IPDM E/R (integrated relay) malfunction
A/C compressor does
not operate.
Perform auto active
test. Does magnetic
clutch operate?
YES
●
BCM signal input circuit malfunction
●
CAN communication signal between BCM and ECM.
●
CAN communication signal between ECM and IPDM E/R
NO
●
Magnetic clutch malfunction
●
Harness/connector malfunction between IPDM E/R and magnetic clutch
●
IPDM E/R (integrated relay) malfunction
Cooling fan does not
operate.
Perform auto active
test. Does cooling
fan operate?
YES
●
ECM signal input circuit
●
CAN communication signal between ECM and IPDM E/R
NO
●
Cooling fan motor malfunction
●
Harness/connector malfunction between IPDM E/R and cooling fan motor
●
IPDM E/R (integrated relay) malfunction
Oil pressure warning
lamp does not operate.
Perform auto active
test. Does oil pres-
sure warning lamp
blink?
YES
●
Harness/connector malfunction between IPDM E/R and oil pressure switch
●
Oil pressure switch malfunction
●
IPDM E/R malfunction
NO
●
CAN communication signal between IPDM E/R and combination meter
●
Combination meter
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PG-23
C
D
E
F
G
H
I
J
L
M
A
B
PG
Schematic
NKS000QK
TKWM5245E
PG-24
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R Terminal Arrangement
NKS000QL
CKIM0763E
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PG-25
C
D
E
F
G
H
I
J
L
M
A
B
PG
IPDM E/R Power/Ground Circuit Inspection
NKS000QM
1.
CHECK FUSE AND FUSIBLE LINK
Make sure the following fusible links or IPDM E/R fuses are not blown.
OK or NG
OK
>> GO TO 2.
NG
>> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new one.
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R harness connector E3.
3.
Check voltage between IPDM E/R harness connector E3 termi-
nals 1, 2 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair harness and connector.
3.
CHECK GROUND CIRCUIT
1.
Disconnect IPDM E/R harness connectors E8 and E9.
2.
Check continuity between IPDM E/R harness connectors E8 ter-
minal 38, E9 terminal 50, 60 and ground.
OK or NG
OK
>> INSPECTION END
NG
>> Repair harness and connector.
Terminal No.
Power source
Fuse, fusible link No.
1
Battery
E
2
C
—
71
78
1, 2 – Ground
: Battery voltage
PKIB6562E
38, 50, 60 – Ground
: Continuity should exist.
SKIA6184E
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