sensor INFINITI QX4 2005 Factory Service Manual

EC-10Revision: October 2005
INDEX FOR DTC
2005 QX56
P1052 1052 A/F SEN1 HTR (B2)EC-386
P1065 1065 ECM BACK UP/CIRCUITEC-393
P1121 1121 ETC ACTREC-397
P1122 1122 ETC FUNCTION/CIRCEC-399
P1124 1124 ETC MOT PWREC-405
P1126 1126 ETC MOT PWREC-405
P1128 1128 ETC MOTEC-410
P1146 1146 HO2S2 (B2)EC-415
P1147 1147 HO2S2 (B2)EC-426
P1148 1148 CLOSED LOOP-B1EC-437
P1166 1166 HO2S2 (B2)EC-415
P1167 1167 HO2S2 (B2)EC-426
P1168 1168 CLOSED LOOP-B2EC-437
P1211 1211 TCS C/U FUNCTNEC-438
P1212 1212 TCS/CIRCEC-439
P1217 1217 ENG OVER TEMPEC-440
P1225 1225 CTP LEARNINGEC-450
P1226 1226 CTP LEARNINGEC-452
P1229 1229 SENSOR POWER/CIRCEC-454
P1271 1271 A/F SEN1 (B1)EC-459
P1272 1272 A/F SENSOR1 (B1)EC-468
P1273 1273 A/F SENSOR1 (B1)EC-477
P1274 1274 A/F SENSOR1 (B1)EC-487
P1276 1276 A/F SENSOR1 (B1)EC-497
P1278 1278 A/F SENSOR1 (B1)EC-507
P1279 1279 A/F SENSOR1 (B1)EC-519
P1281 1281 A/F SENSOR1 (B2)EC-459
P1282 1282 A/F SENSOR1 (B2)EC-468
P1283 1283 A/F SENSOR1 (B2)EC-477
P1284 1284 A/F SENSOR1 (B2)EC-487
P1286 1286 A/F SENSOR1 (B2)EC-497
P1288 1288 A/F SENSOR1 (B2)EC-507
P1289 1289 A/F SENSOR1 (B2)EC-519
P1444 1444 PURG VOLUME CONT/VEC-531
P1446 1446 VENT CONTROL VALVEEC-539
P1564 1564 ASCD SWEC-545 (Models with ICC)
EC-552
(Models with ASCD)
P1568 1568
ACC COMMAND VALUE*
7EC-559
P1572 1572 ASCD BRAKE SWEC-560 (Models with ICC)
EC-569
(Models with ASCD)
P1574 1574
ASCD VHL SPD SEN*
6EC-577 (Models with ICC)
EC-579
(Models with ASCD)
P1610 - P1615 1610 - 1615 NATS MALFUNCTIONBL-137
DTC*1
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*
2ECM*3

INDEX FOR DTC
EC-11
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: October 20052005 QX56
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: The troubleshooting for this DTC needs CONSULT-II.
*5: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates.
*6: 2WD models
*7: Models with ICCP1706 1706 P-N POS SW/CIRCUITEC-581
P1716 1716 TURBINE REV S/CIRCAT- 1 3 1
P1730 1730 A/T INTERLOCKAT- 1 3 5
P1752 1752 I/C SOLENOID/CIRCAT- 1 4 0
P1754 1754 I/C SOLENOID FNCTNAT- 1 4 2
P1757 1757 FR/B SOLENOID/CIRCAT- 1 4 4
P1759 1759 FR/B SOLENOID FNCTAT- 1 4 6
P1762 1762 D/C SOLENOID/CIRCAT- 1 4 8
P1764 1764 D/C SOLENOID FNCTNAT- 1 5 0
P1767 1767 HLR/C SOL/CIRCAT- 1 5 2
P1769 1769 HLR/C SOL FNCTNAT- 1 5 4
P1772 1772 LC/B SOLENOID/CIRCAT- 1 5 6
P1774 1774 LC/B SOLENOID FNCTAT- 1 5 8
P1805 1805 BRAKE SW/CIRCUITEC-586
P2122 2122 APP SEN 1/CIRCEC-591
P2123 2123 APP SEN 1/CIRCEC-591
P2127 2127 APP SEN 2/CIRCEC-597
P2128 2128 APP SEN 2/CIRCEC-597
P2135 2135 TP SENSOREC-604
P2138 2138 APP SENSOREC-611
DTC*1
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*
2ECM*3

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

INDEX FOR DTC
EC-13
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: October 20052005 QX56CMP SEN/CIRC-B1 P0340 0340EC-291
CTP LEARNING P1225 1225EC-450
CTP LEARNING P1226 1226EC-452
CYL 1 MISFIRE P0301 0301EC-271
CYL 2 MISFIRE P0302 0302EC-271
CYL 3 MISFIRE P0303 0303EC-271
CYL 4 MISFIRE P0304 0304EC-271
CYL 5 MISFIRE P0305 0305EC-271
CYL 6 MISFIRE P0306 0306EC-271
CYL 7 MISFIRE P0307 0307EC-271
CYL 8 MISFIRE P0308 0308EC-271
D/C SOLENOID/CIRC P1762 1762AT-148
D/C SOLENOID FNCTN P1764 1764AT-150
ECM P0605 0605EC-383
ECM BACK UP/CIRCUIT P1065 1065EC-393
ECT SEN/CIRCUIT P0117 0117EC-195
ECT SEN/CIRCUIT P0118 0118EC-195
ECT SENSOR P0125 0125EC-208
ENG OVER TEMP P1217 1217EC-440
ETC ACTR P1121 1121EC-397
ETC FUNCTION/CIRC P1122 1122EC-399
ETC MOT P1128 1128EC-410
ETC MOT PWR P1124 1124EC-405
ETC MOT PWR P1126 1126EC-405
EVAP GROSS LEAK P0455 0455EC-349
EVAP PURG FLOW/MON P0441 0441EC-304
EVAP SMALL LEAK P0442 0442EC-309
EVAP SYS PRES SEN P0451 0451EC-332
EVAP SYS PRES SEN P0452 0452EC-335
EVAP SYS PRES SEN P0453 0453EC-341
EVAP VERY SML LEAK P0456 0456EC-357
FR/B SOLENOID/CIRC P1757 1757AT-144
FR/B SOLENOID FNCT P1759 1759AT-146
FTT SEN/CIRCUIT P0182 0182EC-259
FTT SEN/CIRCUIT P0183 0183EC-259
FTT SENSOR P0181 0181EC-253
FUEL LEV SEN SLOSH P0460 0460EC-366
FUEL LEVEL SENSOR P0461 0461EC-368
FUEL LEVL SEN/CIRC P0462 0462EC-370
FUEL LEVL SEN/CIRC P0463 0463EC-370
FUEL SYS-LEAN-B1 P0171 0171EC-236
FUEL SYS-LEAN-B2 P0174 0174EC-236
Items
(CONSULT-II screen terms)DTC*
1
Reference page
CONSULT-II
GST*
2ECM*3

EC-14Revision: October 2005
INDEX FOR DTC
2005 QX56
FUEL SYS-RICH-B1 P0172 0172EC-245
FUEL SYS-RICH-B2 P0175 0175EC-245
HLR/C SOL/CIRC P1767 1767AT- 1 5 2
HLR/C SOL FNCTN P1769 1769AT- 1 5 4
HO2S2 (B1) P0138 0138EC-216
HO2S2 (B1) P0139 0139EC-225
HO2S2 (B1) P1146 1146EC-415
HO2S2 (B1) P1147 1147EC-426
HO2S2 (B2) P0158 0158EC-216
HO2S2 (B2) P0159 0159EC-225
HO2S2 (B2) P1166 1166EC-415
HO2S2 (B2) P1167 1167EC-426
HO2S2 HTR (B1) P0037 0037EC-166
HO2S2 HTR (B1) P0038 0038EC-166
HO2S2 HTR (B2) P0057 0057EC-166
HO2S2 HTR (B2) P0058 0058EC-166
I/C SOLENOID/CIRC P1752 1752AT- 1 4 0
I/C SOLENOID FNCTN P1754 1754AT- 1 4 2
IAT SEN/CIRCUIT P0112 0112EC-191
IAT SEN/CIRCUIT P0113 0113EC-191
IAT SENSOR P0127 0127EC-211
ISC SYSTEM P0506 0506EC-374
ISC SYSTEM P0507 0507EC-376
KNOCK SEN/CIRC-B1 P0327 0327EC-279
KNOCK SEN/CIRC-B1 P0328 0328EC-279
KNOCK SEN/CIRC-B2 P0332 0332EC-279
KNOCK SEN/CIRC-B2 P0333 0333EC-279
L/PRESS SOL/CIRC P0745 0745AT-11 9
LC/B SOLENOID/CIRC P1772 1772AT- 1 5 6
LC/B SOLENOID FNCT P1774 1774AT- 1 5 8
MAF SEN/CIRCUIT P0101 0101EC-174
MAF SEN/CIRCUIT P0102 0102EC-183
MAF SEN/CIRCUIT P0103 0103EC-183
MULTI CYL MISFIRE P0300 0300EC-271
NATS MALFUNCTION P1610 - P1615 1610 - 1615BL-137
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000 —
P-N POS SW/CIRCUIT P1706 1706EC-581
PNP SW/CIRC P0705 0705AT- 1 0 4
PURG VOLUME CONT/V P0444 0444EC-318
PURG VOLUME CONT/V P0445 0445EC-318
PURG VOLUME CONT/V P1444 1444EC-531
Items
(CONSULT-II screen terms)DTC*
1
Reference page
CONSULT-II
GST*
2ECM*3

INDEX FOR DTC
EC-15
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: October 20052005 QX56
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: The troubleshooting for this DTC needs CONSULT-II.
*5: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates.
*6: 2WD models
*7: Models with ICCPW ST P SEN/CIRC P0550 0550EC-378
SENSOR POWER/CIRC P1229 1229EC-454
TCC SOLENOID/CIRC P0740 0740AT- 11 5
TCM P0700 0700AT-103
TCS C/U FUNCTN P1211 1211EC-438
TCS/CIRC P1212 1212EC-439
THERMSTAT FNCTN P0128 0128EC-214
TP SEN 1/CIRC P0222 0222EC-264
TP SEN 1/CIRC P0223 0223EC-264
TP SEN 2/CIRC P0122 0122EC-201
TP SEN 2/CIRC P0123 0123EC-201
TP SENSOR P2135 2135EC-604
TURBINE REV S/CIRC P1716 1716AT-131
TW CATALYST SYS-B1 P0420 0420EC-298
TW CATALYST SYS-B2 P0430 0430EC-298
VEH SPD SEN/CIR AT*5P0720 0720AT-108
VEH SPEED SEN/CIRC*5P0500 0500EC-372
VENT CONTROL VALVE P0447 0447EC-325
VENT CONTROL VALVE P1446 1446EC-539
Items
(CONSULT-II screen terms)DTC*
1
Reference page
CONSULT-II
GST*
2ECM*3

EC-16Revision: October 2005
PRECAUTIONS
2005 QX56
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
UBS00KZ0
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WAR NIN G:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
On Board Diagnostic (OBD) System of Engine and A/TUBS00KZ1
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:

Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves,
etc. will cause the MIL to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)

Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-67, "
HAR-
NESS CONNECTOR" .

Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MIL to light up due to the short circuit.

Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to the malfunction of the EVAP system or fuel injection system,
etc.

Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
PrecautionUBS00KZ2

Always use a 12 volt battery as power source.

Do not attempt to disconnect battery cables while engine is
running.

Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative
battery cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned OFF.

Before removing parts, turn ignition switch OFF and then
disconnect battery ground cable.
SEF 2 89 H

PRECAUTIONS
EC-17
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: October 20052005 QX56

Do not disassemble ECM.

If a battery cable is disconnected, the memory will return to
the ECM value.
The ECM will now start to self-control at its initial value.
Engine operation can vary slightly when the terminal is dis-
connected. However, this is not an indication of a malfunc-
tion. Do not replace parts because of a slight variation.

If the battery is disconnected, the following emission-
related diagnostic information will be lost within 24 hours.
–Diagnostic trouble codes
–1st trip diagnostic trouble codes
–Freeze frame data
–1st trip freeze frame data
–System readiness test (SRT) codes
–Test values

When connecting ECM harness connector, fasten it
securely with a lever as far as it will go as shown in the fig-
ure.

When connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.

Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in coil and condenser, thus resulting in
damage to ICs.

Keep engine control system harness at least 10 cm (4 in)
away from adjacent harness, to prevent engine control sys-
tem malfunctions due to receiving external noise, degraded
operation of ICs, etc.

Keep engine control system parts and harness dry.

Before replacing ECM, perform ECM Terminals and Refer-
ence Value inspection and make sure ECM functions prop-
erly. Refer to EC-117, "
ECM Terminals and Reference Value"
.

Handle mass air flow sensor carefully to avoid damage.

Do not disassemble mass air flow sensor.

Do not clean mass air flow sensor with any type of deter-
gent.

Do not disassemble electric throttle control actuator.

Even a slight leak in the air intake system can cause seri-
ous incidents.

Do not shock or jar the camshaft position sensor (PHASE), crankshaft position sensor (POS).
PBIB11 64 E
BBIA0387E
PBIB0090E
MEF040D

EC-20Revision: October 2005
PREPARATION
2005 QX56
PREPARATIONPFP:00002
Special Service ToolsUBS00KZ4
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool nameDescription
EG17650301
(J-33984-A)
Radiator cap tester
adapterAdapting radiator cap tester to radiator cap and ra-
diator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
KV10117100
(J-36471-A)
Heated oxygen sensor
wrenchLoosening or tightening heated oxygen sensors
with 22 mm (0.87 in) hexagon nut
KV10114400
(J-38365)
Heated oxygen sensor
wrenchLoosening or tightening heated oxygen sensors
a: 22 mm (0.87 in)
(J-44626)
Air fuel ratio (A/F) sen-
sor wrenchLoosening or tightening air fuel ratio (A/F) sensor 1
(J-44321)
Fuel pressure gauge
kitChecking fuel pressure
(J-44321-6)
Fuel pressure adapterConnecting fuel pressure gauge to quick connec-
tor type fuel lines.
(J-45488)
Quick connector re-
leaseRemove fuel tube quick connectors in engine
room.
S-NT564
S-NT379
S-NT636
LEM054
LEC642
LBIA0376E
PBIC0198E

EC-22Revision: October 2005
PREPARATION
2005 QX56
Commercial Service ToolsUBS00KZ5
Tool name
(Kent-Moore No.)Description
Leak detector
i.e.: (J-41416)Locating the EVAP leak
EVAP service port
adapter
i.e.: (J-41413-OBD)Applying positive pressure through EVAP service
port
Fuel filler cap adapter
i.e.: (MLR-8382)Checking fuel tank vacuum relief valve opening
pressure
Socket wrench Removing and installing engine coolant tempera-
ture sensor
Oxygen sensor thread
cleaner
i.e.: (J-43897-18)
(J-43897-12)Reconditioning the exhaust system threads before
installing a new oxygen sensor. Use with anti-
seize lubricant shown below.
a: 18 mm diameter with pitch 1.5 mm for Zirco-
nia Oxygen Sensor
b: 12 mm diameter with pitch 1.25 mm for Tita-
nia Oxygen Sensor
Anti-seize lubricant
i.e.: (Permatex
TM
133AR or equivalent
meeting MIL specifica-
tion MIL-A-907)Lubricating oxygen sensor thread cleaning tool
when reconditioning exhaust system threads.
S-NT703
S-NT704
S-NT815
S-NT705
AEM488
S-NT779