Infiniti QX56 (JA60). Manual — part 499
DIAGNOSIS SYSTEM (IPDM E/R)
EXL-25
< FUNCTION DIAGNOSIS >
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ACTIVE TEST
Test item
TAIL&CLR REQ
[OFF/ON]
×
Displays the status of the position light request signal received from BCM via CAN
communication.
HL LO REQ
[OFF/ON]
×
Displays the status of the low beam request signal received from BCM via CAN
communication.
HL HI REQ
[OFF/ON]
×
Displays the status of the high beam request signal received from BCM via CAN
communication.
FR FOG REQ
[OFF/ON]
×
Displays the status of the front fog lamp request signal received from BCM via
CAN communication.
FR WIP REQ
[STOP/1LOW/LOW/HI]
×
Displays the status of the front wiper request signal received from BCM via CAN
communication.
WIP AUTO STOP
[STOP P/ACT P]
×
Displays the status of the front wiper auto stop signal judged by IPDM E/R.
WIP PROT
[OFF/Block]
×
Displays the status of the front wiper fail-safe operation judged by IPDM E/R.
ST RLY REQ
[OFF/ON]
Displays the status of the starter request signal received from ECM via CAN com-
munication.
IGN RLY
[OFF/ON]
×
Displays the status of the ignition relay judged by IPDM E/R.
RR DEF REQ
[OFF/ON]
×
Displays the status of the rear defogger request signal received from AV control
unit via CAN communication.
OIL P SW
[OPEN/CLOSE]
Displays the status of the oil pressure switch judged by IPDM E/R.
DTRL REQ
[OFF]
Displays the status of the daytime light request signal received from BCM via CAN
communication.
HOOD SW
[OPEN/CLOSE]
Displays the status of the hood switch judged by IPDM E/R.
THFT HRN REQ
[OFF/ON]
Displays the status of the theft warning horn request signal received from BCM
via CAN communication.
HORN CHIRP
[OFF/ON]
Displays the status of the horn reminder signal received from BCM via CAN com-
munication.
Monitor Item
[Unit]
MAIN SIG-
NALS
Description
Test item
Operation
Description
REAR DEFOGGER
OFF
OFF
ON
Operates rear window defogger relay.
FRONT WIPER
OFF
OFF
LO
Operates the front wiper relay.
HI
Operates the front wiper relay and front wiper high relay.
MOTOR FAN
1
OFF
2
OFF
3
Operates the cooling fan relay.
4
Operates the cooling fan relay.
EXL-26
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (IPDM E/R)
EXTERNAL LAMPS
OFF
OFF
TAIL
Operates the tail lamp relay.
LO
Operates the headlamp low relay.
HI
Operates the headlamp low relay and the headlamp high LH/RH relays at 1 sec-
ond intervals.
FOG
Operates the front fog lamp relay
HORN
ON
Operates horn relay for 20 ms.
Test item
Operation
Description
POWER SUPPLY AND GROUND CIRCUIT
EXL-27
< COMPONENT DIAGNOSIS >
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COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis Procedure
INFOID:0000000005369888
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not blown.
Is the fuse blown?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK GROUND CIRCUIT
Terminal No.
Signal name
Fuses and fusible link No.
57
Battery power supply
22 (15A)
70
F (50A)
11
Ignition ACC or ON
4 (10A)
38
Ignition ON or START
59 (10A)
Connector
Terminals
Power
source
Condition
Voltage (V) (Ap-
prox.)
(+)
(-)
M18
11
Ground
ACC
power
supply
Ignition
switch
ACC or
ON
Battery voltage
38
Ground
Ignition
power
supply
Ignition
switch ON
or START
Battery voltage
M20
57
Ground
Battery
power
supply
Ignition
switch
OFF
Battery voltage
70
Ground
Battery
power
supply
Ignition
switch
OFF
Battery voltage
LIIA2415E
EXL-28
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair or replace harness.
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) : Di-
agnosis Procedure
INFOID:0000000005369889
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSES AND FUSIBLE LINK
Check that the following IPDM E/R fuses or fusible link are not blown.
Is the fuse blown?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK BATTERY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R.
3. Check voltage between IPDM E/R harness connectors and
ground.
Is the measurement value normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
BCM
Ground
Continuity
Connector
Terminal
M20
67
Yes
LIIA0915E
Terminal No.
Signal name
Fuses and fusible link No.
1
Battery
A, D
2
Battery
C
12
Ignition switch ON or START
59
Terminals
Ignition switch position
(+)
(
−)
OFF
ON
START
Connector
Terminal
E118 (A)
1
Ground
Battery
voltage
Battery
voltage
Battery
voltage
2
Battery
voltage
Battery
voltage
Battery
voltage
E119 (B)
12
0V
Battery
voltage
Battery
voltage
AWMIA0023ZZ
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