ignition INFINITI QX56 2006 Factory Service Manual

TROUBLE DIAGNOSESWT-13
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Revision: November 2009 2006 QX56
Terminals and Reference Values for BCMEES001I6
( ): Wire colorTerminals
ItemCondition Voltage (V)
(Approx.)
+ –
15 (L/W)
Ground Tire pressure warning check
connector
—
5
18 (P) Remote keyless entry receiver
(Ground) —
0
19 (V/W) Remote keyless entry receiver
(Power supply) Stand-by
Press any of the electronic
switches
20 (G/W) Remote keyless entry receiver
(Signal) Stand-by
Press any of the electronic
switches
38 (W/L) Ignition switch Ignition switch ON or START Battery voltage
39 (L) Data line (CAN-H) ——
40 (P) Data line (CAN-L) ——
67 (B) GND —0
70 (W/B) Battery power supply —Battery voltage
OCC3879D
OCC3882D
OCC3881D
OCC3880D

WT-14
TROUBLE DIAGNOSES
Revision: November 20092006 QX56
ID Registration ProcedureEES0025P
ID REGISTRATION WITH TRANSMITTER ACTIVATION TOOL
NOTE:
This procedure must be done after replacement of a low tire pressure warning transmitter or BCM.
New replacement transmitters are provided "asleep" and must first be "woken up" using Transmitter
Activation Tool J-45295 before ID registration can be performed.
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunction might be detected
during self-diagnosis depending on control unit which carries out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CONSULT-II CONVERTER to the data link con-
nector, then turn the ignition switch ON.
2. Select "START (NISSAN BASED VHCL)".
3. Touch “BCM” on "SELECT SYSTEM" screen.
NOTE:
If "BCM" is not indicated, go to GI-40, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
4. Select “AIR PRESSURE MONITOR ” on "SELECT TEST ITEM" screen.
5. Select “WORK SUPPORT ” on "SELECT DIAG MODE" screen,
and select "ID REGIST".
BCIA0029E
BCIA0030E
BCIA0031E

WT-16
TROUBLE DIAGNOSES
Revision: November 20092006 QX56
ID REGISTRATION WITHOUT TRANSMITTER ACTIVATION TOOL
NOTE:
This procedure must be done after replacement of a low tire pressure warning transmitter or BCM.
New replacement transmitters are provided "asleep" and must first be "woken up" using Transmitter
Activation Tool J-45295 before ID registration can be performed.
1. With the ignition switch OFF, connect CONSULT-II and CONSULT-II CONVERTER to the data link con-
nector, then turn the ignition switch ON.
2. Select "START (NISSAN BASED VHCL)".
3. Touch “BCM” on "SELECT SYSTEM" screen.
NOTE:
If "BCM" is not indicated, go to GI-40, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
4. Select “AIR PRESSURE MONITOR” on “SELECT TEST ITEM"
screen.
5. Select “WORK SUPPORT ” on “SELECT DIAG MODE" screen,
and select "ID REGIST".
6. Adjust the tire pressure to the values shown in the table below for ID registration, and drive the vehicle at 15 km/h (9.4 MPH) or
more for a few minutes.
7. After completing all ID registrations, press “END” to complete the procedure.
BCIA0029E
BCIA0030E
BCIA0031E
Tire position
Tire pressure kPa (kg/cm2 , psi)
Front – Left 250 (2.5, 36)
Front – Right 230 (2.3, 33)
Rear – Right 210 (2.1, 30)
Rear – Left 190 (1.9, 27)

WT-18
TROUBLE DIAGNOSES
Revision: November 20092006 QX56
Transmitter Wake Up OperationEES001I8
WITH TRANSMITTER ACTIVATION TOOL
NOTE:
This procedure must be done after replacement of a low tire pressure warning transmitter or BCM.
New replacement transmitters are provided "asleep" and must first be "woken up" using Transmitter
Activation Tool J-45295 before ID registration can be performed.
1. With the transmitter activation tool (J-45295) pushed against the
front left transmitter, press the button for 5 seconds.

With ignition switch ON, as the low tire pressure warning lamp
flashes per the following diagram, the respective transmitter
then must be woken up.
2. When the BCM finishes assigning each tire ID, the BCM flashes the hazard warning lamps and trailer flasher lamps (if equipped) and sends flashing indicator status by CAN according to the following time
chart. Please see trailer flasher specification details of trailer flashing lamps since the BCM controls trailer
flasher lamps as brake lamps.
3. After completing wake up of all transmitters, make sure low tire pressure warning lamp goes out. Tool number
— (J-45295)
SEIA0101E
LEIA0059E

TROUBLE DIAGNOSESWT-21
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Data Monitor Mode
NOTE:
Before performing the self-diagnosis, be sure to register the ID, or the actual malfunction location may be different from that displayed on
CONSULT-II. MONITOR
CONDITION SPECIFICATION
VHCL SPEED Drive vehicle. Vehicle speed (km/h or MPH)
AIR PRESS FL
AIR PRESS FR
AIR PRESS RR
AIR PRESS RL

Drive vehicle for a few minutes.
Tire pressure (kPa or psi)
or

Ignition switch ON and activation tool
is transmitting activation signals.
ID REGST FL1
ID REGST FR1
ID REGST RR1
ID REGST RL1 Ignition switch ON Registration ID: DONE
No registration ID: YET
WARNING LAMP Low tire pressure warning lamp on: ON
Low tire pressure warning lamp off: OFF
BUZZER Buzzer in combination meter on: ON
Buzzer in combination meter off: OFF

TROUBLE DIAGNOSESWT-23
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Revision: November 2009 2006 QX56
Preliminary CheckEES001IB
BASIC INSPECTION
1. CHECK ALL TIRE PRESSURES
Check all tire pressures. Refer to WT-38, "
Tire" .
OK or NG
OK >> GO TO 2.
NG >> Adjust tire pressure to specified value.
2. CHECK LOW TIRE PRESSURE WARNING LAMP ACTIVATION
1. Check low tire pressure warning lamp activation.
2. Does low tire pressure warning lamp activate for 1 second when ignition switch is turned ON?
YES >> GO TO 3.
NO >> Check fuse and combination meter.
3. CHECK CONNECTOR
1. Disconnect BCM harness connector.
2. Check terminals for damage or loose connection.
3. Reconnect harness connector.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK TRANSMITTER ACTIVATION TOOL
Check transmitter activation tool battery.
OK or NG
OK >> Carry out self-diagnosis.
NG >> Replace transmitter activation tool battery.

WT-24
TROUBLE DIAGNOSES
Revision: November 20092006 QX56
Malfunction Code/Symptom ChartEES001IC
Code/SymptomMalfunction partReference
page
15
16
17
18 Front-left tire pressure drops to 193 kPa (2.0 kg/cm
2 , 28 psi) or less
Front-right tire pressure drops to 193 kPa (2.0 kg/cm2 , 28 psi) or less
Rear-right tire pressure drops to 193 kPa (2.0 kg/cm2 , 28 psi) or less
Rear-left tire pressure drops to 193 kPa (2.0 kg/cm2 , 28 psi) or less —
21
22
23
24 Transmitter no data (front - left)
Transmitter no data (front - right)
Transmitter no data (rear - right)
Transmitter no data (rear - left) WT-26,
"Inspection 1:
Transmitter or
Control Unit
(BCM)"
31
32
33
34
Transmitter checksum error (front - left)
Transmitter checksum error (front - right)
Transmitter checksum error (rear - right)
Transmitter checksum error (rear - left) WT-26,
"Inspection 2:
Transmitter -
1"
35
36
37
38Transmitter pressure data error (front - left)
Transmitter pressure data error (front - right)
Transmitter pressure data error (rear - right)
Transmitter pressure data error (rear - left) WT-27,
"Inspection 3:
Transmitter -
2"
41
42
43
44Transmitter function code error (front - left)
Transmitter function code error (front - right)
Transmitter function code error (rear - right)
Transmitter function code error (rear - left) WT-26,
"Inspection 2:
Transmitter -
1"
45
46
47
48Transmitter battery voltage low (front - left)
Transmitter battery voltage low (front - right)
Transmitter battery voltage low (rear - right)
Transmitter battery voltage low (rear - left) WT-26,
"Inspection 2:
Transmitter -
1"
52
Vehicle speed signal WT-28, "Inspection 4:
Vehicle Speed
Signal"
Low tire pressure warning lamp does
not come on when ignition switch is
turned on.Fuse or combination meter
BCM connector or circuit
BCM WT-29,
"Inspection 1:
Warning
Lamp Does
Not Come On
When Ignition
Switch Is
Turned On"
Low tire pressure warning lamp stays
on when ignition switch is turned on.
Combination meter
BCM connector or circuit
BCM WT-30,
"Inspection 2:
Low Tire
Pressure
Warning
Lamp Stays
On When
Ignition
Switch Is
Turned On"
Low tire pressure warning lamp
flashes when ignition switch is turned
on.
BCM harness connector or circuit
BCM
Transmitter's mode OFF
ID registration incomplete "not yet" WT-32,
"Inspection 3:
Warning
Lamp Flashes
When Ignition
Switch Is
Turned
On"WT-32

TROUBLE DIAGNOSESWT-25
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Revision: November 2009 2006 QX56
Hazard warning lamps flash when igni-
tion switch is turned on.BCM harness connector or circuit
BCM WT-32,
"Inspection 3:
Warning
Lamp Flashes
When Ignition
Switch Is
Turned On"
“
TIRE PRESSURE ” information in dis-
play does not exist. Fuse
Display unit
BCM WT-34,
"Inspection 5:
“TIRE PRES-
SURE” Infor-
mation In
Display Unit
Does Not
Exist"
ID registration cannot be completed.
Transmitter
Remote keyless entry receiver harness connector or circuit
Remote keyless entry receiver
BCM harness connector or circuit
BCM WT-35,
"Inspection 6:
ID Registra-
tion Cannot
Be Com-
pleted"
Code/Symptom
Malfunction partReference
page

WT-28
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: November 20092006 QX56
Inspection 4: Vehicle Speed SignalEES001Q3
MALFUNCTION CODE NO. 52 (DTC C1729)
1. SELF-DIAGNOSTIC RESULT CHECK
1. With the ignition switch OFF, connect CONSULT-II and CONSULT-II CONVERTER to the data link con- nector, then turn the ignition switch ON.
2. Select “START (NISSAN BASED VHCL) ”.
3. Select "BCM" on “SELECT SYSTEM” screen.
NOTE:
If the BCM is not indicated, refer to GI-40, "
CONSULT-II Data
Link Connector (DLC) Circuit" .
4. Select "BCM" on "SELECT TEST ITEM" screen, and select "SELF-DIAG RESULTS".
5. Check display contents in self-diagnostic results.
Is "CAN COMM CIRCUIT" displayed in the self-diagnosis display items?
YES >> Malfunction in CAN communication system. GO TO LAN-26, "CAN COMMUNICATION"
NO >> GO TO 2.
2. CHECK BCM
Perform BCM diagnosis. Refer to BCS-11, "
CONSULT–II INSPECTION PROCEDURE" .
Inspection results OK?
OK >> Perform Vehicle Speed Sensor Inspection. Refer to EC-443, "Diagnostic Procedure" .
NG >> Replace BCM. Refer to BCS-20, "
BCM" .
BCIA0029E
BCIA0030E
BCIA0031E

TROUBLE DIAGNOSIS FOR SYMPTOMSWT-29
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Revision: November 2009 2006 QX56
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Inspection 1: Warning Lamp Does Not Come On When Ignition Switch Is Turned
On
EES001Q4
DIAGNOSTIC PROCEDURE
1. SELF-DIAGNOSTIC RESULT CHECK
1. With the ignition switch OFF, connect CONSULT-II and CONSULT-II CONVERTER to the data link con- nector, then turn the ignition switch ON.
2. Select “START (NISSAN BASED VHCL) ”.
3. Select "BCM" on “SELECT SYSTEM” screen.
NOTE:
If the BCM is not indicated, refer to GI-40, "
CONSULT-II Data
Link Connector (DLC) Circuit" .
4. Select "BCM" on "SELECT TEST ITEM" screen, and select "SELF-DIAG RESULTS".
5. Check display contents in self-diagnostic results.
Is "CAN COMM CIRCUIT" displayed in the self-diagnosis display items?
YES >> Malfunction in CAN communication system. Go To LAN-26, "CAN COMMUNICATION" .
NO >> GO TO 2.
2. CHECK COMBINATION METER
Check combination meter operation.
Inspection results OK?
OK >> GO TO 3.
NG >> Check combination meter. Refer to DI-8, "
Combination Meter" .
BCIA0029E
BCIA0030E
BCIA0031E