2009 INFINITI QX56 battery

REAR POWER VENT WINDOW RELAY (OPEN) CHECKPWC-49
< COMPONENT DIAGNOSIS >
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1. Disconnect rear power vent window switch.
2. Check continuity between rear power vent window relay (OPEN) connector M87 terminal 2 and rear power vent window switch
connector M95 terminal 3.
Is the inspection result normal?
YES >> Refer to PWC-44, "Diagnosis Procedure - (Early Pro-
duction)".
NO >> Repair or replace harness.
Diagnosis Procedure - (Late Production)INFOID:0000000005864666
1.CHECK REAR POWER VENT WINDOW RE LAY (OPEN) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power vent window relay (OPEN).
3. Turn ignition switch ON.
4. Check voltage between rear power vent window relay (OPEN) connector and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace harness.
2.CHECK REAR POWER VENT WINDOW RELAY (OPEN)
Check continuity between rear power vent window relay (OPEN) ter-
minals 3 and 4, 3 and 5.
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace rear power vent window relay (OPEN).
3.CHECK REAR POWER VENT WINDO W RELAY (OPEN) GROUND CIRCUIT
Check continuity between rear power vent window relay (OPEN)
connector M87 terminal 4 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness. 2 - 3 : Continuity should exist.
LIIA1568E
Connector
Te r m i n a l s
Voltage (V)
(Approx.)
(+) (-)
M87 1
Ground Battery voltage
5
LIIA1565E
Terminals Condition Continuity
34 12V direct current supply
between terminals 1 and 2
No
No current supply Yes
35 12V direct current supply
between terminals 1 and 2
Ye s
No current supply No
WIIA0291E
4 - Ground : Continuity should exist.
LIIA1567E
Revision: December 20092009 QX56

REAR POWER VENT WINDOW RELAY (CLOSE) CHECKPWC-51
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REAR POWER VENT WINDOW RELAY (CLOSE) CHECK
DescriptionINFOID:0000000005864667
Rear power vent windows OPEN/CLOSE by receiving the signal from rear power vent window switch.
Diagnosis Procedure - (Early Production)INFOID:0000000005864668
1.CHECK REAR POWER VENT WINDOW RE LAY (CLOSE) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power vent window relay (CLOSE).
3. Turn ignition switch ON.
4. Check voltage between rear power vent window relay (CLOSE) connector and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace harness.
2.CHECK REAR POWER VENT WINDOW RELAY (CLOSE)
Check continuity between rear pow er vent window relay (CLOSE)
terminals 3 and 4, 3 and 5.
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace rear power vent window relay (CLOSE).
3.CHECK REAR POWER VENT WINDO W RELAY (CLOSE) GROUND CIRCUIT
Check continuity between rear pow er vent window relay (CLOSE)
connector M89 terminal 4 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4.CHECK REAR POWER VENT WI NDOW RELAY (CLOSE) CIRCUIT
ConnectorTe r m i n a l s
Voltage (V)
(Approx.)
(+) (-)
M89 1
Ground Battery voltage
5
LIIA1565E
Terminals Condition Continuity
34 12V direct current supply
between terminals 1 and 2
No
No current supply Yes
35 12V direct current supply
between terminals 1 and 2
Ye s
No current supply No
WIIA0291E
4 - Ground : Continuity should exist.
LIIA1567E
Revision: December 20092009 QX56

PWC-52
< COMPONENT DIAGNOSIS >
REAR POWER VENT WINDOW RELAY (CLOSE) CHECK
1. Disconnect rear power vent window switch.
2. Check continuity between rear power vent window relay
(CLOSE) connector M89 terminal 2 and rear power vent window
switch M95 terminal 4.
Is the inspection result normal?
YES >> Refer to PWC-44, "Diagnosis Procedure - (Early Pro-
duction)".
NO >> Repair or replace harness.
Diagnosis Procedure - (Late Production)INFOID:0000000005864669
1.CHECK REAR POWER VENT WINDOW RE LAY (CLOSE) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power vent window relay (CLOSE).
3. Turn ignition switch ON.
4. Check voltage between rear power vent window relay (CLOSE) connector and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace harness.
2.CHECK REAR POWER VENT WINDOW RELAY (CLOSE)
Check continuity between rear power vent window relay (CLOSE)
terminals 3 and 4, 3 and 5.
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace rear power vent window relay (CLOSE).
3.CHECK REAR POWER VENT WINDO W RELAY (CLOSE) GROUND CIRCUIT
Check continuity between rear power vent window relay (CLOSE)
connector M89 terminal 4 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness. 2 - 4 : Continuity should exist.
LIIA1569E
Connector
Te r m i n a l s
Voltage (V)
(Approx.)
(+) (-)
M89 1
Ground Battery voltage
5
LIIA1565E
Terminals Condition Continuity
34 12V direct current supply
between terminals 1 and 2
No
No current supply Yes
35 12V direct current supply
between terminals 1 and 2
Ye s
No current supply No
WIIA0291E
4 - Ground : Continuity should exist.
LIIA1567E
Revision: December 20092009 QX56

BCM (BODY CONTROL MODULE)PWC-57
< ECU DIAGNOSIS >
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Te r m i n a l Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
1BR/W Ignition keyhole illumi-
nation Output OFFDoor is locked (SW OFF) Battery voltage
Door is unlocked (SW ON) 0V
2SB Combination switch
input 5 Input ON
Lighting, turn, wiper OFF
Wiper dial position 4
3G/Y Combination switch
input 4 Input ONLighting, turn, wiper OFF
Wiper dial position 4
4Y Combination switch
input 3 Input ON
Lighting, turn, wiper OFF
Wiper dial position 4
5G/B Combination switch
input 2
Input ONLighting, turn, wiper OFF
Wiper dial position 4
6V Combination switch
input 1
9GR/R Rear window defogger
switch
Input ONRear window defogger switch
ON
0V
Rear window defogger switch
OFF 5V
10 G Hazard lamp flash Input OFF ON (opening or closing) 0V
OFF (other than above) Battery voltage
11 O Ignition switch (ACC
or ON)
InputACC or
ON Ignition switch ACC or ON Battery voltage
12 R/L Front door switch RH Input OFF ON (open) 0V
OFF (closed) Battery voltage
13 GR Rear door switch RH Input OFF ON (open) 0V
OFF (closed) Battery voltage
15 L/W Tire pressure warning
check connector
Input OFF — 5V
18 P Remote keyless entry
receiver and optical
sensor (ground)
Output OFF — 0V
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
Revision: December 20092009 QX56

PWC-58
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
19 V/WRemote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G/W Remote keyless entry
receiver (signal) Input OFFStand-by (keyfob buttons re-
leased)
When remote keyless entry
receiver receives signal from
keyfob (keyfob buttons
pressed)
21 G NATS antenna amp. Input OFF
→
ON Ignition switch (OFF
→ ON) Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
22 W/V BUS — — Ignition switch ON or power
window timer operates
23 G/O Security indicator
lamp Output OFF
Goes OFF
→ illuminates (Ev-
ery 2.4 seconds) Battery voltage
→ 0V
25 BR NATS antenna amp. Input OFF
→
ON Ignition switch (OFF
→ ON) Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
26 Y/L Rear wiper auto stop
switch 2 Input ONRise up position (rear wiper
arm on stopper)
0V
A Position (full clockwise stop
position) 0V
Forward sweep (counterclock-
wise direction) Fluctuating
B Position (full counterclock-
wise stop position) Battery voltage
Reverse sweep (clockwise di-
rection) Fluctuating
27 W/R Compressor ON sig-
nal Input ONA/C switch OFF 5V
A/C switch ON 0V
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
LIIA1893E
LIIA1894E
LIIA1895E
PIIA2344E
Revision: December 20092009 QX56

BCM (BODY CONTROL MODULE)PWC-59
< ECU DIAGNOSIS >
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28 L/R Front blower monitor Input ON Front blower motor OFF Battery voltage
Front blower motor ON 0V
29 W/B Hazard switch Input OFF ON 0V
OFF 5V
30 Y/BR Glass hatch switch Input OFF Glass hatch switch released 0
Glass hatch switch pressed Battery
32 R/G Combination switch
output 5
Output ONLighting, turn, wiper OFF
Wiper dial position 4
33 R/Y Combination switch
output 4 Output ONLighting, turn, wiper OFF
Wiper dial position 4
34 L Combination switch
output 3 Output ON
Lighting, turn, wiper OFF
Wiper dial position 4
35 O/B Combination switch
output 2
Output ONLighting, turn, wiper OFF
Wiper dial position 4
36 R/W Combination switch
output 1
37 B/R Key switch and igni-
tion knob switch Input OFFIntelligent Key inserted Battery voltage
Intelligent Key inserted 0V
38 W/L Ignition switch (ON) Input ON — Battery voltage
39 L CAN-H — — — —
40 P CAN-L — — — —
42 GR Glass hatch ajar
switch Input ONGlass hatch open 0
Glass hatch closed Battery
43 R/B Back door latch (door
ajar switch) Input OFFON (open) 0V
OFF (closed) Battery voltage
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
Revision: December 20092009 QX56

PWC-60
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
44 ORear wiper auto stop
switch 1 Input ONRise up position (rear wiper
arm on stopper)
0V
A Position (full clockwise stop
position) Battery voltage
Forward sweep (counterclock-
wise direction) Fluctuating
B Position (full counterclock-
wise stop position) 0V
Reverse sweep (clockwise di-
rection) Fluctuating
47 SB Front door switch LH Input OFF ON (open) 0V
OFF (closed) Ba
ttery voltage
48 R/Y Rear door switch LH Input OFF ON (open) 0V
OFF (closed) Ba
ttery voltage
49 R Cargo lamp Output OFF Any door open (ON) 0V
All doors closed (OFF) Battery voltage
51 G/Y Trailer turn signal
(right) Output ON Turn right ON
52 G/B Trailer turn signal (l eft) Output ON Turn left ON
53 L/W Glass hatch lock actu-
ator
Output OFFGlass hatch switch released 0
Glass hatch switch pressed Battery
54 Y Rear wiper output cir-
cuit 2 Input ONRise up position (rear wiper
arm on stopper)
0V
A Position (full clockwise stop
position) 0V
Forward sweep (counterclock-
wise direction) 0V
B Position (full counterclock-
wise stop position) Battery voltage
Reverse sweep (clockwise di-
rection) Battery voltage
55 SB Rear wiper output cir-
cuit 1 Output ONOFF 0
ON Battery voltage
56 R/G Battery saver output Output OFF
30 minutes after ignition
switch is turned OFF 0V
ON — Battery voltage
57 Y/R Battery power supply Input OFF — Battery voltage
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
SKIA3009J
SKIA3009J
Revision: December 20092009 QX56

BCM (BODY CONTROL MODULE)PWC-61
< ECU DIAGNOSIS >
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58 W/R Optical sensor Input ON When optical sensor is illumi-
nated
3.1V or more
When optical sensor is not illu-
minated 0.6V or less
59 G Front door lock as-
sembly LH actuator
(unlock) Output OFF
OFF (neutral) 0V
ON (unlock) Battery voltage
60 G/B Turn signal (left) Output ON Turn left ON
61 G/Y Turn signal (right) Output ON Turn right ON
62 R/W Step lamp LH and RH Output OFF ON (any door open) 0V
OFF (all doors closed) Battery voltage
63 L Interior room/map
lamp Output OFFAny door
switchON (open) 0V
OFF (closed) Battery voltage
65 V All door lock actuators
(lock) Output OFFOFF (neutral) 0V
ON (lock) Battery voltage
66 G/Y Front door lock actua-
tor RH, rear door lock
actuators LH/RH and
back door lock actua-
tor (unlock) Output OFF
OFF (neutral) 0V
ON (unlock) Battery voltage
67 B Ground Input ON — 0V
68 W/L Power window power
supply (RAP) Output —Ignition switch ON Battery voltage
Within 45 seconds after igni-
tion switch OFF
Battery voltage
More than 45 seconds after ig-
nition switch OFF 0V
When front door LH or RH is
open or power window timer
operates 0V
69 W/R Power window power
supply
Output — — Battery voltage
70 W/B Battery power supply Input OFF — Battery voltage
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
SKIA3009J
SKIA3009J
Revision: December 20092009 QX56