Infiniti QX4 (R50). Manual — part 135
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 585
ECM Terminals and Reference Value . . . . . .585
On Board Diagnosis Logic. . . . . . . . . ...586
Possible Cause. . . . . . . . . . . . . . 586
DTC Confirmation Procedure . . . . . . . . ..586
Wiring Diagram . . . . . . . . . . . . . . 587
Diagnostic Procedure . . . . . . . . . . . ..588
DTC P1491 VACUUM CUT VALVE BYPASS
VALVE. . . . . . . . . . . . . . . . . . ..591
Description . . . . . . . . . . . . . . . ...591
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 591
ECM Terminals and Reference Value . . . . . .591
On Board Diagnosis Logic. . . . . . . . . ...592
Possible Cause. . . . . . . . . . . . . . 592
DTC Confirmation Procedure . . . . . . . . ..592
Overall Function Check . . . . . . . . . . ...593
Wiring Diagram . . . . . . . . . . . . . . 594
Diagnostic Procedure . . . . . . . . . . . ..595
DTC P1605 A/T DIAGNOSIS COMMUNICATION
LINE . . . . . . . . . . . . . . . . . . . .603
Component Description . . . . . . . . . . ...603
On Board Diagnosis Logic. . . . . . . . . ...603
Possible Cause. . . . . . . . . . . . . . 603
DTC Confirmation Procedure . . . . . . . . ..603
DTC P1706 PARK/NEUTRAL POSITION (PNP)
SWITCH . . . . . . . . . . . . . . . . . ...604
Component Description . . . . . . . . . . ...604
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 604
ECM Terminals and Reference Value . . . . . .604
On Board Diagnosis Logic. . . . . . . . . ...604
Possible Cause. . . . . . . . . . . . . . 604
DTC Confirmation Procedure . . . . . . . . ..605
Overall Function Check . . . . . . . . . . ...606
Wiring Diagram . . . . . . . . . . . . . . 607
Diagnostic Procedure . . . . . . . . . . . ..608
VARIABLE INDUCTION AIR CONTROL SYSTEM
(VIAS). . . . . . . . . . . . . . . . . . ...610
Description . . . . . . . . . . . . . . . ...610
ECM Terminals and Reference Value . . . . . . 611
Wiring Diagram . . . . . . . . . . . . . . 612
Diagnostic Procedure . . . . . . . . . . . ..613
INJECTOR . . . . . . . . . . . . . . . . ...616
Component Description . . . . . . . . . . ...616
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 616
ECM Terminals and Reference Value . . . . . .616
Wiring Diagram . . . . . . . . . . . . . . 617
Diagnostic Procedure . . . . . . . . . . . ..618
START SIGNAL. . . . . . . . . . . . . . ...621
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 621
ECM Terminals and Reference Value . . . . . .621
Wiring Diagram . . . . . . . . . . . . . . 622
Diagnostic Procedure . . . . . . . . . . . ..623
FUEL PUMP. . . . . . . . . . . . . . . . .625
System Description. . . . . . . . . . . . ..625
Component Description . . . . . . . . . . ...625
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 625
ECM Terminals and Reference Value . . . . . .626
Wiring Diagram . . . . . . . . . . . . . . 627
Diagnostic Procedure . . . . . . . . . . . ..628
POWER STEERING OIL PRESSURE SWITCH. . .634
Component Description . . . . . . . . . . ...634
CONSULT-II Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . . 634
ECM Terminals and Reference Value . . . . . .634
Wiring Diagram . . . . . . . . . . . . . . 635
Diagnostic Procedure . . . . . . . . . . . ..636
REFRIGERANT PRESSURE SENSOR . . . . . ..639
Description . . . . . . . . . . . . . . . ...639
ECM Terminals and Reference Value . . . . . .639
Wiring Diagram . . . . . . . . . . . . . . 640
Diagnostic Procedure . . . . . . . . . . . ..641
ELECTRICAL LOAD SIGNAL. . . . . . . . . .643
ECM Terminals and Reference Value . . . . . .643
Wiring Diagram . . . . . . . . . . . . . . 644
Diagnostic Procedure . . . . . . . . . . . ..645
MIL & DATA LINK CONNECTORS . . . . . . . 648
Wiring Diagram . . . . . . . . . . . . . . 648
SERVICE DATA AND SPECIFICATIONS (SDS) . ...649
Fuel Pressure Regulator. . . . . . . . . . ..649
Idle Speed and Ignition Timing. . . . . . . . 649
Mass Air Flow Sensor. . . . . . . . . . . ..649
Engine Coolant Temperature Sensor . . . . . ..649
Heated Oxygen Sensor 1 Heater (Front) . . . . 649
Fuel Pump . . . . . . . . . . . . . . . ...649
IACV-AAC Valve . . . . . . . . . . . . . ..649
Injector . . . . . . . . . . . . . . . . . .649
Resistor. . . . . . . . . . . . . . . . . 649
Throttle Position Sensor . . . . . . . . . . ..650
Calculated Load Value. . . . . . . . . . . .650
Intake Air Temperature Sensor. . . . . . . . 650
Heated Oxygen Sensor 2 Heater (Rear). . . . .650
Crankshaft Position Sensor (REF) . . . . . . ..650
Fuel Tank Temperature Sensor . . . . . . . ...650
Camshaft Position Sensor (PHASE) . . . . . ...650
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
CONTENTS
(Cont’d)
EC-7
Alphabetical & P No. Index for DTC
NBEC0001
ALPHABETICAL INDEX FOR DTC
NBEC0001S01
Items
(CONSULT-II screen terms)
DTC*1
Reference page
Unable to access ECM
—
ABSL PRES SEN/CIRC
P0105
AIR TEMP SEN/CIRC
P0110
A/T 1ST GR FNCTN
P0731
A/T 2ND GR FNCTN
P0732
A/T 3RD GR FNCTN
P0733
A/T 4TH GR FNCTN
P0734
A/T COMM LINE
P0600*2
A/T DIAG COMM LINE
P1605
A/T TCC S/V FNCTN
P0744
ATF TEMP SEN/CIRC
P0710
CAM PS/CIRC (PHS)
P0340
CLOSED LOOP-B1
P1148
CLOSED LOOP-B2
P1168
CLOSED TP SW/CIRC
P0510
COOLANT T SEN/CIRC*3
P0115
*COOLANT T SEN/CIRC
P0125
CPS/CIRC (POS) COG
P1336
CPS/CIRCUIT (POS)
P0335
CPS/CIRCUIT (REF)
P1335
CYL 1 MISFIRE
P0301
CYL 2 MISFIRE
P0302
CYL 3 MISFIRE
P0303
CYL 4 MISFIRE
P0304
CYL 5 MISFIRE
P0305
CYL 6 MISFIRE
P0306
ECM
P0605
ENGINE SPEED SIG
P0725
ENG OVER TEMP
P0217
ENG OVER TEMP
P1217
EVAP GROSS LEAK
P0455
EVAP PURG FLOW/MON
P1447
EVAP SYS PRES SEN
P0450
EVAP SMALL LEAK
P0440
EVAP VERY SMALL LEAK
P1441
TROUBLE DIAGNOSIS — INDEX
Alphabetical & P No. Index for DTC
EC-8
Items
(CONSULT-II screen terms)
DTC*1
Reference page
FUEL LEVL SEN/CIRC
P0464
FUEL LEVL SEN/CIRC
P1464
FUEL LEVEL SENSOR
P0461
FUEL LV SE (SLOSH)
P0460
FUEL SYS-LEAN/BK1
P0171
FUEL SYS-LEAN/BK2
P0174
FUEL SYS-RICH/BK1
P0172
FUEL SYS-RICH/BK2
P0175
FUEL TEMP SEN/CIRC
P0180
HO2S1 HTR (B1)
P0135
HO2S1 HTR (B2)
P0155
HO2S1 (B1)
P0130
HO2S1 (B1)
P0131
HO2S1 (B1)
P0132
HO2S1 (B1)
P0133
HO2S1 (B1)
P0134
HO2S1 (B2)
P0150
HO2S1 (B2)
P0151
HO2S1 (B2)
P0152
HO2S1 (B2)
P0153
HO2S1 (B2)
P0154
HO2S2 (B1)
P0137
HO2S2 (B1)
P0138
HO2S2 (B1)
P0139
HO2S2 (B1)
P0140
HO2S2 (B2)
P0157
HO2S2 (B2)
P0158
HO2S2 (B2)
P0159
HO2S2 (B2)
P0160
HO2S2 HTR (B1)
P0141
HO2S2 HTR (B2)
P0161
IACV/AAC VLV/CIRC
P0505
IGN SIGNAL-PRIMARY
P1320
INTK TIM S/CIRC-B1
P1140
INTK TIM S/CIRC-B2
P1145
INT/V TIM CONT-B1
P1110
INT/V TIM CONT-B2
P1135
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — INDEX
Alphabetical & P No. Index for DTC (Cont’d)
EC-9
Items
(CONSULT-II screen terms)
DTC*1
Reference page
INT/V TIM V/CIR-B1
P1111
INT/V TIM V/CIR-B2
P1136
KNOCK SEN/CIRC-B1
P0325*2
L/PRES SOL/CIRC
P0745
MAF SEN/CIRCUIT*3
P0100
MULTI CYL MISFIRE
P0300
NATS MALFUNCTION
P1610 - P1615*2
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
P0000
—
O/R CLTCH SOL/CIRC
P1760
P-N POS SW/CIRCUIT
P1706
PNP SW/CIRC
P0705
PURG VOLUME CONT/V
P0443
PURG VOLUME CONT/V
P1444
SFT SOL A/CIRC*3
P0750
SFT SOL B/CIRC*3
P0755
SWIRL CONT SOL/V
P1130
SWL CON VC SW/CIRC
P1165
TCC SOLENOID/CIRC
P0740
TP SEN/CIRC A/T*3
P1705
TRTL POS SEN/CIRC*3
P0120
TW CATALYST SYS-B1
P0420
TW CATALYST SYS-B2
P0430
VC CUT/V BYPASS/V
P1491
VC/V BYPASS/V
P1490
VEH SPEED SEN/CIRC*4
P0500
VEH SPD SEN/CIR A/T*4
P0720
VENT CONTROL VALVE
P0446
VENT CONTROL VALVE
P1446
VENT CONTROL VALVE
P1448
*1: 1st trip DTC No. is the same as DTC No.
*2: This DTC is displayed with CONSULT-II only.
*3: When the fail-safe operation occurs, the MIL illuminates.
*4: The MIL illuminates when both the “Revolution sensor signal” and the “Vehicle speed sensor signal” meet the fail-safe condition at
the same time.
NOTE:
I
Regarding R50 models, “-B1” and “BK1” indicate right bank and “-B2” and “BK2” indicate left bank.
I
Bank 1 (-B1 or BK1) includes No. 1 cylinder.
TROUBLE DIAGNOSIS — INDEX
Alphabetical & P No. Index for DTC (Cont’d)
EC-10
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