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CAN SYSTEM (TYPE 2)LAN-71
[CAN]
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Revision: November 2009 2006 QX56
Case 12
Check display control unit circuit. Refer to LAN-131, "Display Control Unit Circuit Inspection" .
PKIC3530E
PKIC3028E
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CAN SYSTEM (TYPE 3)LAN-89
[CAN]
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Revision: November 2009 2006 QX56
Case 8
Check display control unit circuit. Refer to LAN-131, "Display Control Unit Circuit Inspection" .
PKIC3506E
PKIC2912E
Page 2382 of 3383
CAN SYSTEM (TYPE 4)LAN-113
[CAN]
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Revision: November 2009 2006 QX56
Case 12
Check display control unit circuit. Refer to LAN-131, "Display Control Unit Circuit Inspection" .
PKIC3551E
PKIC3046E
Page 2400 of 3383
![INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYSTEMLAN-131
[CAN]
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Revision: November 2009 2006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect driver seat control unit connector.
2. Check resi INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYSTEMLAN-131
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Revision: November 2009 2006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect driver seat control unit connector.
2. Check resi](/manual-img/42/57028/w960_57028-2399.png)
TROUBLE DIAGNOSIS FOR SYSTEMLAN-131
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Revision: November 2009 2006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect driver seat control unit connector.
2. Check resistance between driver seat control unit harness con- nector terminals.
OK or NG
OK >> Replace driver seat control unit.
NG >> Repair harness between driver seat control unit and har- ness connector B69.
Combination Meter Circuit InspectionUKS004TM
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of combination meter for damage, bend and loose connection (meter side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect combination meter connector.
2. Check resistance between combination meter harness connec- tor terminals.
OK or NG
OK >> Replace combination meter.
NG >> Repair harness between combination meter and data link connector.
Display Control Unit Circuit InspectionUKS004TN
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of display control unit for damage, bend and loose connection (control unit side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
Driver seat control unit connector TerminalResistance
(Approx.)
P2 319 54 – 66 Ω
PKIA6842E
Combination
meter connector TerminalResistance
(Approx.)
M24 1112 54 – 66 Ω
PKIA6837E
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![INFINITI QX56 2006 Factory Service Manual LAN-132
[CAN]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: November 20092006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect display control unit connector.
2. Check resistance between display control INFINITI QX56 2006 Factory Service Manual LAN-132
[CAN]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: November 20092006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect display control unit connector.
2. Check resistance between display control](/manual-img/42/57028/w960_57028-2400.png)
LAN-132
[CAN]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: November 20092006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect display control unit connector.
2. Check resistance between display control unit harness connec- tor terminals.
OK or NG
OK >> Replace display control unit.
NG >> Repair harness between display control unit and data link connector.
BCM Circuit InspectionUKS004TO
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of BCM for damage, bend and loose connection (control module side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect BCM connector.
2. Check resistance between BCM harness connector terminals.
OK or NG
OK >> Replace BCM. Refer to BCS-20, "BCM" .
NG >> Repair harness between BCM and data link connector.
Data Link Connector Circuit InspectionUKS004TP
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connector of data link connector for damage, bend and loose connection (con- nector side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
Display control unit connector TerminalResistance
(Approx.)
M95 25 26 54 – 66 Ω
SKIA6884E
BCM connector TerminalResistance
(Approx.)
M18 394054 – 66 Ω
SKIA6869E
Page 2423 of 3383

LT-16
HEADLAMP (FOR USA)
Revision: November 20092006 QX56
CONSULT-II Function (BCM)EKS00B81
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.
2. Touch "START (NISSAN BASED VHCL)".
3. Touch "BCM" on "SELECT SYSTEM" screen. If "BCM" is not indicated, go to GI-40, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnostic
test item Diagnostic mode
Description
Inspection by part WORK SUPPORT
Supports inspections and adjustments. Commands are transmitted to the BCM
for setting the status suitable for required operation, input/output signals are
received from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time. ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read. ECU PART NUMBER BCM part number can be read.CONFIGURATION Performs BCM configuration read/write functions.
BBIA0369E
BCIA0029E
BCIA0030E
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HEADLAMP (FOR USA)LT-17
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Revision: November 2009 2006 QX56
4. Touch "HEAD LAMP" on "SELECT TEST ITEM" screen.
WORK SUPPORT
Operation Procedure
1. Touch "HEAD LAMP" on "SELECT TEST ITEM" screen.
2. Touch "WORK SUPPORT" on "SELECT DIAG MODE" screen.
3. Touch item on "SELECT WORK ITEM" screen.
4. Touch "START".
5. Touch "CHANGE SETT".
6. The setting will be changed and "CUSTOMIZING COMPLETED" will be displayed.
7. Touch "END".
Display Item List
DATA MONITOR
Operation Procedure
1. Touch "HEAD LAMP" on "SELECT TEST ITEM" screen.
2. Touch "DATA MONITOR" on "SELECT DIAG MODE" screen.
3. Touch either "ALL SIGNALS" or "SELECTION FROM MENU" on the "SELECT MONITOR ITEM" screen.
4. Touch "START".
5. When "SELECTION FROM MENU" is selected, touch individual items to be monitored. When "ALL SIG-
NALS" is selected, all the items will be monitored.
6. Touch "RECORD" while monitoring, then the status of the monitored item can be recorded. To stop recording, touch "STOP".
Display Item List
LKIA0183E
Item DescriptionCONSULT-II Factory setting
BATTERY SAVER SET Exterior lamp battery saver control mode can be changed
in this mode. Selects exterior lamp battery saver control
mode between ON/OFF. ON
×
OFF —
ALL SIGNALS Monitors all the signals.
SELECTION FROM MENU Selects and monitors individual signal.
Monitor item Contents
IGN ON SW "ON/OFF" Displays "IGN position (ON)/OFF, ACC position (OFF)" judged from the ignition switch signal.
ACC ON SW "ON/OFF" Displays "ACC (ON)/OFF, Ignition OFF (OFF)" status judged from ignition switch signal.
HI BEAM SW "ON/OFF"Displays status (high beam switch: ON/Others: OFF) of high beam switch judged from lighting
switch signal.
HEAD LAMP SW 1 "ON/OFF" Displays status (headlamp switch 1: ON/Others: OFF) of headlamp switch 2 judged from light-
ing switch signal.
HEAD LAMP SW 2 "ON/OFF" Displays status (headlamp switch 2: ON/Others: OFF) of headlamp switch 2 judged from light-
ing switch signal.
LIGHT SW 1ST "ON/OFF" Displays status (lighting switch 1st position: ON/Others: OFF) of lighting switch judged from
lighting switch signal.
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LT-18
HEADLAMP (FOR USA)
Revision: November 20092006 QX56
ACTIVE TEST
Operation Procedure
1. Touch "HEAD LAMP" on "SELECT TEST ITEM" screen.
2. Touch "ACTIVE TEST" on "SELECT DIAG MODE" screen.
3. Touch item to be tested and check operation of the selected item.
4. During the operation check, touching "BACK" deactivates the operation.
Display Item List
SELF-DIAGNOSTIC RESULTS
Operation Procedure
1. Touch "BCM" on "SELECT TEST ITEM" screen.
2. Touch "SELF-DIAG RESULTS" on "SELECT DIAG MODE" screen.
3. Self-diagnostic results are displayed.
Display Item List
AUTO LIGHT SW "ON/OFF"Displays status of the lighting switch as judged from the lighting switch signal. (AUTO position:
ON/Other than AUTO position: OFF)
PASSING SW "ON/OFF"Displays status (flash-to-pass switch: ON/Others: OFF) of flash-to-pass switch judged from
lighting switch signal.
FR FOG SW "ON/OFF"Displays status (front fog lamp switch: ON/Others: OFF) of front fog lamp switch judged from
lighting switch signal.
DOOR SW-DR "ON/OFF" Displays status of the front door LH as judged from the front door LH switch signal. (Door is
open: ON/Door is closed: OFF)
DOOR SW-AS "ON/OFF" Displays status of the front door RH as judged from the front door RH switch signal. (Door is
open: ON/Door is closed: OFF)
DOOR SW-RR "ON/OFF" Displays status of the rear door as judged from the rear door switch (RH) signal. (Door is open:
ON/Door is closed: OFF)
DOOR SW-RL "ON/OFF" Displays status of the rear door as judged from the rear door switch (LH) signal. (Door is open:
ON/Door is closed: OFF)
BACK DOOR SW "ON/OFF" Displays status of the back door as judged from the back door switch signal. (Door is open:
ON/Door is closed: OFF)
TURN SIGNAL R "ON/OFF" Displays status (Turn right: ON/Others: OFF) as judged from lighting switch signal.
TURN SIGNAL L "ON/OFF" Displays status (Turn left: ON/Others: OFF) as judged from lighting switch signal.
CARGO LAMP SW "ON/OFF" Displays status of cargo lamp switch.
OPTICAL SENSOR [0 - 5V] Displays "ambient light (close to 5V when dark/close to 0V when light)" judged from optical
sensor signal.
Monitor item
Contents
Test itemDescription
TAIL LAMP Allows tail lamp relay to operate by switching ON-OFF.
HEAD LAMP Allows headlamp relay (HI, LO) to operate by switching ON-OFF.
FR FOG LAMP Allows fog lamp relay to operate by switching ON-OFF.
CARGO LAMP Allows cargo lamp to operate by switching ON-OFF.
CORNERING LAMP Not used.
Monitored item CONSULT-ll display Description
CAN communication CAN communication [U1000] Malfunction is detected in CAN communication.
CAN communication system CAN communication system 1 to 6 [U1000] Malfunction is detected in CAN system.