2005 INFINITI QX4 display

REAR VIEW MONITOR
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Revision: October 20052005 QX56
13. CHECK REAR VIEW CAMERA CONTROL UNIT COMPOSITE SIGNAL
1. Connect rear view camera control unit connector and display
unit connector.
2. Turn ignition switch ON.
3. Check voltage signal between rear view camera control unit har-
ness connector B73 terminal 12 (W) and ground.
OK or NG
OK >> Replace the display unit. Refer to AV-158, "Removal and Installation of Display Unit" .
NG >> Replace the rear view camera control unit. Refer to DI-87, "
Removal and Installation of Rear View
Camera Control Unit" .
Removal and Installation of Rear View Camera Control UnitEKS00BDO
REMOVAL
1. Remove luggage side finishers LH. Refer to EI-40, "LUGGAGE
FLOOR TRIM" .
2. Remove screws (2) and remove rear view camera control unit.
INSTALLATION
Installation is in the reverse order of removal.
Removal and Installation of Rear View CameraEKS00BDP
REMOVAL
1. Remove back door lower finisher. Refer to EI-42, "BACK DOOR TRIM" .
2. Remove connector.
3. Remove screws (2) and remove rear view camera.
INSTALLATION
Installation is in the reverse order of removal.12 (W) - Ground:
WKIA1827E
SKIA4896E
LKIA0478E
LKIA0479E

EC-8Revision: October 2005
INDEX FOR DTC
2005 QX56
INDEX FOR DTCPFP:00024
DTC No. IndexUBS00KYY
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-163, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
DTC*1
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*
2ECM*3
U1000
1000*4CAN COMM CIRCUITEC-163
U1001
1001*4CAN COMM CIRCUITEC-163
P0000 0000NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.—
P0037 0037 HO2S2 HTR (B1)EC-166
P0038 0038 HO2S2 HTR (B1)EC-166
P0057 0057 HO2S2 HTR (B2)EC-166
P0058 0058 HO2S2 HTR (B2)EC-166
P0101 0101 MAF SEN/CIRCUITEC-174
P0102 0102 MAF SEN/CIRCUITEC-183
P0103 0103 MAF SEN/CIRCUITEC-183
P0112 0112 IAT SEN/CIRCUITEC-191
P0113 0113 IAT SEN/CIRCUITEC-191
P0117 0117 ECT SEN/CIRCUITEC-195
P0118 0118 ECT SEN/CIRCUITEC-195
P0122 0122 TP SEN 2/CIRCEC-201
P0123 0123 TP SEN 2/CIRCEC-201
P0125 0125 ECT SENSOREC-208
P0127 0127 IAT SENSOREC-211
P0128 0128 THERMSTAT FNCTNEC-214
P0138 0138 HO2S2 (B1)EC-216
P0139 0139 HO2S2 (B1)EC-225
P0158 0158 HO2S2 (B2)EC-216
P0159 0159 HO2S2 (B2)EC-225
P0171 0171 FUEL SYS-LEAN-B1EC-236
P0172 0172 FUEL SYS-RICH-B1EC-245
P0174 0174 FUEL SYS-LEAN-B2EC-236
P0175 0175 FUEL SYS-RICH-B2EC-245
P0181 0181 FTT SENSOREC-253
P0182 0182 FTT SEN/CIRCUITEC-259
P0183 0183 FTT SEN/CIRCUITEC-259
P0222 0222 TP SEN 1/CIRCEC-264
P0223 0223 TP SEN 1/CIRCEC-264
P0300 0300 MULTI CYL MISFIREEC-271
P0301 0301 CYL 1 MISFIREEC-271
P0302 0302 CYL 2 MISFIREEC-271
P0303 0303 CYL 3 MISFIREEC-271

EC-12Revision: October 2005
INDEX FOR DTC
2005 QX56
Alphabetical IndexUBS00KYZ
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-163, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
Items
(CONSULT-II screen terms)DTC*
1
Reference page
CONSULT-II
GST*
2ECM*3
A/F SENSOR1 (B1) P1271 1271EC-459
A/F SENSOR1 (B1) P1272 1272EC-468
A/F SENSOR1 (B1) P1273 1273EC-477
A/F SENSOR1 (B1) P1274 1274EC-487
A/F SENSOR1 (B1) P1276 1276EC-497
A/F SENSOR1 (B1) P1278 1278EC-507
A/F SENSOR1 (B1) P1279 1279EC-519
A/F SENSOR1 (B2) P1281 1281EC-459
A/F SENSOR1 (B2) P1282 1282EC-468
A/F SENSOR1 (B2) P1283 1283EC-477
A/F SENSOR1 (B2) P1284 1284EC-487
A/F SENSOR1 (B2) P1286 1286EC-497
A/F SENSOR1 (B2) P1288 1288EC-507
A/F SENSOR1 (B2) P1289 1289EC-519
A/F SEN1 HTR (B1) P1031 1031EC-386
A/F SEN1 HTR (B1) P1032 1032EC-386
A/F SEN1 HTR (B2) P1051 1051EC-386
A/F SEN1 HTR (B2) P1052 1052EC-386
A/T INTERLOCK P1730 1730AT- 1 3 5
A/T TCC S/V FNCTN P0744 0744AT-11 7
ACC COMMAND VALUE*7P1568 1568EC-559
APP SEN 1/CIRC P2122 2122EC-591
APP SEN 1/CIRC P2123 2123EC-591
APP SEN 2/CIRC P2127 2127EC-597
APP SEN 2/CIRC P2128 2128EC-597
APP SENSOR P2138 2138EC-611
ASCD BRAKE SW P1572 1572EC-560 (Models with ICC)
EC-569
(Models with ASCD)
ASCD SW P1564 1564EC-545
(Models with ICC)
EC-552
(Models with ASCD)
ASCD VHL SPD SEN*
6P1574 1574EC-577 (Models with ICC)
EC-579
(Models with ASCD)
ATF TEMP SEN/CIRC P0710 0710AT- 1 2 6
BRAKE SW/CIRCUIT P1805 1805EC-586
CAN COMM CIRCUIT U1000
1000*4EC-163
CAN COMM CIRCUIT U1001
1001*4EC-163
CKP SEN/CIRCUIT P0335 0335EC-284
C L O S E D L O O P - B 1 P 11 4 8 11 4 8EC-437
C L O S E D L O O P - B 2 P 11 6 8 11 6 8EC-437

EC-18Revision: October 2005
PRECAUTIONS
2005 QX56

After performing each TROUBLE DIAGNOSIS, perform DTC
Confirmation Procedure or Overall Function Check.
The DTC should not be displayed in the DTC Confirmation
Procedure if the repair is completed. The Overall Function
Check should be a good result if the repair is completed.

When measuring ECM signals with a circuit tester, never
allow the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.

Do not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM's
transistor. Use a ground other than ECM terminals, such as
the ground.

B1 indicates the bank 1, B2 indicates the bank 2 as shown
in the figure.
SEF 2 17 U
SEF 3 48 N
PBIB11 44 E

EVAPORATIVE EMISSION SYSTEM
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Revision: October 20052005 QX56
How to Detect Fuel Vapor LeakageUBS00KZI
CAUTION:

Never use compressed air or a high pressure pump.

Do not exceed 4.12 kPa (0.042 kg/cm2 , 0.6 psi) of pressure in EVAP system.
NOTE:

Do not start engine.

Improper installation of EVAP service port adapter to the EVAP service port may cause a leak.
WITH CONSULT-II
1. Attach the EVAP service port adapter securely to the EVAP service port.
2. Also attach the pressure pump and hose to the EVAP service port adapter.
3. Turn ignition switch ON.
4. Select the “EVAP SYSTEM CLOSE” of “WORK SUPPORT
MODE” with CONSULT-II.
5. Touch “START”. A bar graph (Pressure indicating display) will
appear on the screen.
6. Apply positive pressure to the EVAP system until the pressure
indicator reaches the middle of the bar graph.
7. Remove EVAP service port adapter and hose with pressure
pump.
8. Locate the leak using a leak detector. Refer to EC-33, "
EVAPO-
RATIVE EMISSION LINE DRAWING" .
PEF 8 38 U
PEF 9 17 U
SEF 2 00 U

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
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IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)PFP:28591
DescriptionUBS00L1L

If the security indicator lights up with the ignition switch in
the ON position or “NATS MALFUNCTION” is displayed on
“SELF-DIAG RESULTS” screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer to BL-137, "
IVIS (INFINITI VEHICLE IMMOBILIZER
SYSTEM-NATS)" .

Confirm no self-diagnostic results of IVIS (NATS) is dis-
played before touching “ERASE” in “SELF-DIAG RESULTS”
mode with CONSULT-II.

When replacing ECM, initialization of IVIS (NATS) system
and registration of all IVIS (NATS) ignition key IDs must be
carried out with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner. Regarding the procedures of IVIS (NATS)
initialization and IVIS (NATS) ignition key ID registration, refer to CONSULT-II operation manual,
IVIS/NVIS.
SEF 5 43 X

EC-48Revision: October 2005
ON BOARD DIAGNOSTIC (OBD) SYSTEM
2005 QX56
ON BOARD DIAGNOSTIC (OBD) SYSTEMPFP:00028
IntroductionUBS00KZP
The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:
The above information can be checked using procedures listed in the table below.
×: Applicable —: Not applicable
*: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.
The malfunction indicator lamp (MIL) on the instrument panel lights up when the same malfunction is detected
in two consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to EC-103,
"Fail-safe Chart" .)
Two Trip Detection LogicUBS00KZQ
When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MIL will not light up at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MIL lights up. The MIL lights up at the same time when the DTC is stored. <2nd
trip> The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MIL,
and store DTC and Freeze Frame data, even in the 1st trip, as shown below.
×: Applicable —: Not applicable
When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when there is
malfunction on engine control system.
Emission-related diagnostic information Diagnostic service
Diagnostic Trouble Code (DTC) Service $03 of SAE J1979
Freeze Frame data Service $02 of SAE J1979
System Readiness Test (SRT) code Service $01 of SAE J1979
1st Trip Diagnostic Trouble Code (1st Trip DTC) Service $07 of SAE J1979
1st Trip Freeze Frame data
Test values and Test limits Service $06 of SAE J1979
Calibration ID Service $09 of SAE J1979
DTC 1st trip DTCFreeze
Frame data1st trip Freeze
Frame dataSRT code SRT status Test value
CONSULT-II×× × × × ×—
GST×× ×—×××
ECM××*— — —×—
ItemsMIL DTC 1st trip DTC
1st trip 2nd trip
1st trip
displaying2nd trip
displaying1st trip
displaying2nd trip
display-
ing BlinkingLighting
upBlinkingLighting
up
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0308 is being detected×———— —×—
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0308 is being detected——×——×——
One trip detection diagnoses
(Refer to EC-49, "
EMISSION-
RELATED DIAGNOSTIC INFOR-
MATION ITEMS" .)—×——×———
Except above — — —×—××—

ON BOARD DIAGNOSTIC (OBD) SYSTEM
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Revision: October 20052005 QX56
*7: When the ECM is in the mode of displaying SRT status, MIL may flash. For the details, refer to EC-57, "How to Display SRT Status" .
*8: 2WD models
*9: Models with ICC
DTC AND 1ST TRIP DTC
The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip
DTC will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MIL will not
light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MIL lights up. In other words,
the DTC is stored in the ECM memory and the MIL lights up when the same malfunction occurs in two consec-
utive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or light up the MIL during the
1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in EC-62, "
HOW
TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" .
For malfunctions in which 1st trip DTCs are displayed, refer to EC-49, "
EMISSION-RELATED DIAGNOSTIC
INFORMATION ITEMS" . These items are required by legal regulations to continuously monitor the system/
component. In addition, the items monitored non-continuously are also displayed on CONSULT-II.
1st trip DTC is specified in Service $07 of SAE J1979. 1st trip DTC detection occurs without lighting up the MIL
and therefore does not warn the driver of a malfunction. However, 1st trip DTC detection will not prevent the
vehicle from being tested, for example during Inspection/Maintenance (I/M) tests.
When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame
data as specified in Work Flow procedure Step 2, refer to EC-96, "
WORK FLOW" . Then perform DTC Confir-
mation Procedure or Overall Function Check to try to duplicate the malfunction. If the malfunction is dupli-
cated, the item requires repair.
How to Read DTC and 1st Trip DTC
DTC and 1st trip DTC can be read by the following methods.
With CONSULT-II
With GST
CONSULT-II or GST (Generic Scan Tool) Examples: P0340, P1148, P1706, etc.
These DTCs are prescribed by SAE J2012.
(CONSULT-II also displays the malfunctioning component or system.)
No Tools
The number of blinks of the MIL in the Diagnostic Test Mode II (Self-Diagnostic Results) indicates the DTC.
Example: 0340, 1148, 1706, etc.
These DTCs are controlled by NISSAN.

1st trip DTC No. is the same as DTC No.

Output of a DTC indicates a malfunction. However, GST or the Diagnostic Test Mode II do not indi-
cate whether the malfunction is still occurring or has occurred in the past and has returned to nor-
mal. CONSULT-II can identify malfunction status as shown below. Therefore, using CONSULT-II (if
available) is recommended.
A sample of CONSULT-II display for DTC and 1st trip DTC is shown below. DTC or 1st trip DTC of a malfunc-
tion is displayed in SELF-DIAGNOSTIC RESULTS mode of CONSULT-II. Time data indicates how many times
the vehicle was driven after the last detection of a DTC.
If the DTC is being detected currently, the time data will be [0].