2008 INFINITI QX56 battery voltage

WT-26
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
28 L/R Front blower monitor Input ONFront blower motor OFF
Battery voltage
Front blower motor ON 0V
29 W/B Hazard switch Input OFFON
0V
OFF 5V
30 Y/BR Glass hatch switch Input OFF Glass hatch switch released
Battery voltage
Glass hatch switch pressed 0
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: March 2010
2008 QX56

BCM (BODY CONTROL MODULE)WT-27
< ECU DIAGNOSIS >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
44 O Rear 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) Battery voltage
48 R/Y Rear door switch LH Input OFF ON (open)
0V
OFF (closed) Battery voltage
49 R Cargo lamp Output OFFAny 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 (left) 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: March 2010
2008 QX56

WT-28
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
58 W/R Optical sensorInput ONWhen 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: March 2010
2008 QX56

WT-32
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
NOTE:
Before performing the self-diagnosis, be sure to register the ID or else the actual malfunction location may be different from that dis-
played on CONSULT-III.
Self-Diagnosis (Without CONSULT-III)INFOID:0000000001735398
SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-III)
1. Turn ignition switch ON.
2. Ground the tire pressure warning check connector to initiate self diagnosis.
3. Compare the flashing pattern with the flash code chart below.
NOTE:
The system is normal when the low tire pressure warning lamp flashes 5 times and continues repeating. Self-
diagnosis results are erased automatically by turning the ignition switch “OFF”.
Diagnostic item Diagnostic item is detected when ··· Reference
page
LOW - PRESSURE - FL [C1704]
LOW - PRESSURE - FR [C1705]
LOW - PRESSURE - RR [C1706]
LOW - PRESSURE - RL [C1707] Tire pressures dropped below specified value. Refer to WT-8,
"System Description".
—
[NO-DATA] - FL [C1708]
[NO-DATA] - FR [C1709]
[NO-DATA] - RR [C1710]
[NO-DATA] - RL [C1711] Data from FL transmitter cannot be received.
Data from FR transmitter cannot be received.
Data from RR transmitter cannot be received.
Data from RL transmitter cannot be received.
WT-14
[CHECKSUM- ERR] - FL [C1712]
[CHECKSUM- ERR] - FR [C1713]
[CHECKSUM- ERR] - RR [C1714]
[CHECKSUM- ERR] - RL [C1715]Checksum data from FL transmitter is malfunctioning.
Checksum data from FR transmitter is malfunctioning.
Checksum data from RR transmitter is malfunctioning.
Checksum data from RL transmitter is malfunctioning.
WT-16
[PRESSDATA- ERR] - FL [C1716]
[PRESSDATA- ERR] - FR [C1717]
[PRESSDATA- ERR] - RR [C1718]
[PRESSDATA- ERR] - RL [C1719]Air pressure data from FL transmitter is malfunctioning.
Air pressure data from FR transmitter is malfunctioning.
Air pressure data from RR transmitter is malfunctioning.
Air pressure data from RL transmitter is malfunctioning.
WT-18
[CODE- ERR] - FL [C1720]
[CODE- ERR] - FR [C1721]
[CODE- ERR] - RR [C1722]
[CODE- ERR] - RL [C1723]Function code data from FL transmitter is malfunctioning.
Function code data from FR transmitter is malfunctioning.
Function code data from RR transmitter is malfunctioning.
Function code data from RL transmitter is malfunctioning.
WT-16
[BATT - VOLT - LOW] - FL [C1724]
[BATT - VOLT - LOW] - FR [C1725]
[BATT - VOLT - LOW] - RR [C1726]
[BATT - VOLT - LOW] - RL [C1727]Battery voltage of FL transmitter drops.
Battery voltage of FR transmitter drops.
Battery voltage of RR transmitter drops.
Battery voltage of RL transmitter drops.
WT-16
VHCL_SPEED_SIG_ERR [C1729]
Vehicle speed signal is in error. WT-19
IGN_CIRCUIT_OPEN [C1735]Vehicle ignition signal is in error. WT-20
ALEIA0050GB
Revision: March 2010 2008 QX56

BCM (BODY CONTROL MODULE)WT-33
< ECU DIAGNOSIS >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
Flash Code Malfunction partReference
page
15
16
17
18 Tire pressure dropped below specified value. Refer to
WT-8, "
System
Description". —
21
22
23
24 Transmitter no data (FL)
Transmitter no data (FR)
Transmitter no data (RR)
Transmitter no data (RL)
WT-14
31
32
33
34Transmitter chec
ksum error (FL)
Transmitter chec ksum error (FR)
Transmitter chec ksum error (RR)
Transmitter chec ksum error (RL) WT-16
35
36
37
38Transmitter pressure data error (FL)
Transmitter pressure data error (FR)
Transmitter pressure data error (RR)
Transmitter pressure data error (RL)
WT-18
41
42
43
44Transmitter function
code error (FL)
Transmitter function code error (FR)
Transmitter function code error (RR)
Transmitter function code error (RL) WT-16
45
46
47
48Transmitter battery voltage low (FL)
Transmitter battery voltage low (FR)
Transmitter battery voltage low (RR)
Transmitter battery voltage low (RL)
WT-16
52
Vehicle speed signal WT-19
54Vehicle ignition signal WT-20
Revision: March 2010 2008 QX56

WW-20
< COMPONENT DIAGNOSIS >
FRONT WIPER MOTOR LO CIRCUIT
1. Turn the ignition switch ON.
2. Select "FRONT WIPER" of IPDM E/R active test item.
3. While operating the test item, check voltage between IPDM E/Rharness connector and ground.
Is the measurement value normal?
YES >> GO TO 4
NO >> Replace IPDM E/R. Refer to PCS-34, "
Removal and Installation of IPDM E/R".
4. CHECK FRONT WIPER MOTOR (LO) OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R and front wiper motor.
3. Check continuity between IPDM E/R harness connector and front wiper motor harness connector.
Does continuity exist?
YES >> Replace front wiper motor. Refer to WW-77, "Wiper
Motor and Linkage".
NO >> Repair or replace harness.
Te r m i n a l s Te s t i t e m
Voltage
(Approx.)
(+)
(-)
IPDM E/R
GroundFRONT WIPER
Connector Terminal
E121 32 LO
Battery
voltage
OFF 0V
WKIA3759E
IPDM E/R Front wiper motor
Continuity
Connector Terminal Connector Terminal
E121 32 E233Yes
WKIA2830E
Revision: March 2010 2008 QX56

WW-22
< COMPONENT DIAGNOSIS >
FRONT WIPER MOTOR HI CIRCUIT
1. Turn the ignition switch ON.
2. Select "FRONT WIPER" of IPDM E/R active test item.
3. While operating the test item, check voltage between IPDM E/Rharness connector and ground.
Is the measurement value normal?
YES >> GO TO 4
NO >> Replace IPDM E/R. Refer to PCS-34, "
Removal and Installation of IPDM E/R".
4. CHECK FRONT WIPER MOTOR (HI) OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R and front wiper motor.
3. Check continuity between IPDM E/R harness connector and front wiper motor harness connector.
Does continuity exist?
YES >> Replace front wiper motor. Refer to WW-77, "Wiper
Motor and Linkage".
NO >> Repair or replace harness.
Te r m i n a l s Te s t i t e m
Voltage
(Approx.)
(+)
(-)
IPDM E/R
GroundFRONT WIPER
Connector Terminal
E121 35 HI
Battery
voltage
OFF 0 V
WKIA3760E
IPDM E/R Front wiper motor
Continuity
Connector Terminal Connector Terminal
E121 35 E232Yes
WKIA2852E
Revision: March 2010 2008 QX56

FRONT WIPER AUTO STOP SIGNAL CIRCUITWW-23
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
WW
N
O P
FRONT WIPER AUTO ST OP SIGNAL CIRCUIT
Component Function CheckINFOID:0000000001735583
1. CHECK FRONT WIPER (AUTO STOP) SIGNAL CHECK
CONSULT-III DATA MONITOR
1. Select "FR WIPER STOP" of IPDM E/R data monitor item.
2. Operate the front wiper.
3. Check that "FR WIPER STOP" changes to "ON" and "OFF" linked with the wiper operation.
Is the status of item normal?
YES >> Front wiper auto stop signal circuit is normal.
NO >> Refer to WW-23, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001735584
1. CHECK FRONT WIPER MOTOR (A UTO STOP) OUTPUT VOLTAGE
1. Turn the ignition switch ON.
2. Check voltage between IPDM E/R harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> GO TO 2
2. CHECK FRONT WIPER MOTOR (AUTO STOP) SHORT CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R and front wiper motor.
3. Check continuity between IPDM E/R harness connector and ground.
Does continuity exist?
YES >> Repair or replace harness.
NO >> Replace IPDM E/R. Refer to PCS-34, "
Removal and Installation of IPDM E/R".
3. CHECK FRONT WIPER MOTOR (AUTO STOP) CIRCUIT CONTINUITY
Monitor item ConditionMonitor status
FR WIPER STOP Front wiper motor Stop position
ON
Except stop position OFF
Te r m i n a l s
Voltage
(Approx.)
(+)
(-)
IPDM E/R Ground
Connector Terminal
E122 43 Battery voltage
WKIA1431E
IPDM E/R
GroundContinuity
Connector Terminal
E122 43 No
WKIA1429E
Revision: March 2010 2008 QX56