443 INFINITI FX35 2007 User Guide

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Revision: 2006 July 2007 FX35/FX45
DTC Confirmation Procedure ..............................
. 434
Wiring Diagram ................................................... . 435
Diagnostic Procedure .......................................... . 436
Component Inspection ........................................ . 440
DTC P0455 EVAP CONTROL SYSTEM ............... . 441
On Board Diagnosis Logic .................................. . 441
DTC Confirmation Procedure .............................. . 442
Diagnostic Procedure .......................................... . 443
DTC P0456 EVAP CONTROL SYSTEM ............... . 449
On Board Diagnosis Logic .................................. . 449
DTC Confirmation Procedure .............................. . 450
Overall Function Check ....................................... . 451
Diagnostic Procedure .......................................... . 452
DTC P0460 FUEL LEVEL SENSOR ..................... . 459
Component Description ....................................... . 459
On Board Diagnosis Logic .................................. . 459
DTC Confirmation Procedure .............................. . 459
Diagnostic Procedure .......................................... . 460
Removal and Installation ..................................... . 460
DTC P0461 FUEL LEVEL SENSOR ..................... . 461
Component Description ....................................... . 461
On Board Diagnosis Logic .................................. . 461
Overall Function Check ....................................... . 461
Diagnostic Procedure .......................................... . 462
Removal and Installation ..................................... . 462
DTC P0462, P0463 FUEL LEVEL SENSOR ......... . 463
Component Description ....................................... . 463
On Board Diagnosis Logic .................................. . 463
DTC Confirmation Procedure .............................. . 463
Diagnostic Procedure .......................................... . 464
Removal and Installation ..................................... . 464
DTC P0500 VSS .................................................... . 465
Description .......................................................... . 465
On Board Diagnosis Logic .................................. . 465
DTC Confirmation Procedure .............................. . 465
Overall Function Check ....................................... . 466
Diagnostic Procedure .......................................... . 466
DTC P0506 ISC SYSTEM ...................................... . 467
Description .......................................................... . 467
On Board Diagnosis Logic .................................. . 467
DTC Confirmation Procedure .............................. . 467
Diagnostic Procedure .......................................... . 468
DTC P0507 ISC SYSTEM ...................................... . 469
Description .......................................................... . 469
On Board Diagnosis Logic .................................. . 469
DTC Confirmation Procedure .............................. . 469
Diagnostic Procedure .......................................... . 470
DTC P0550 PSP SENSOR .................................... . 471
Component Description ....................................... . 471
CONSULT-II Reference Value in Data Monitor Mode . 471
On Board Diagnosis Logic .................................. . 471
DTC Confirmation Procedure .............................. . 471
Wiring Diagram ................................................... . 472
Diagnostic Procedure .......................................... . 473
Component Inspection ........................................ . 475
Removal and Installation ..................................... . 475
DTC P0603 ECM POWER SUPPLY ...................... . 476
Component Description ....................................... . 476 On Board Diagnosis Logic ...................................
.476
DTC Confirmation Procedure .............................. .476
Wiring Diagram .................................................... .477
Diagnostic Procedure .......................................... .478
DTC P0605 ECM .................................................... .480
Component Description ....................................... .480
On Board Diagnosis Logic ................................... .480
DTC Confirmation Procedure .............................. .480
Diagnostic Procedure .......................................... .481
DTC P0643 SENSOR POWER SUPPLY ............... .483
On Board Diagnosis Logic ................................... .483
DTC Confirmation Procedure .............................. .483
Wiring Diagram .................................................... .484
Diagnostic Procedure .......................................... .486
DTC P0850 PNP SWITCH ..................................... .488
Component Description ....................................... .488
CONSULT-II Reference Value in Data Monitor Mode .488
On Board Diagnosis Logic ................................... .488
DTC Confirmation Procedure .............................. .488
Overall Function Check ....................................... .489
Wiring Diagram .................................................... .490
Diagnostic Procedure .......................................... .491
DTC P1148, P1168 CLOSED LOOP CONTROL ... .493
On Board Diagnosis Logic ................................... .493
DTC P1211 TCS CONTROL UNIT ......................... .494
Description ........................................................... .494
On Board Diagnosis Logic ................................... .494
DTC Confirmation Procedure .............................. .494
Diagnostic Procedure .......................................... .494
DTC P1212 TCS COMMUNICATION LINE ........... .495
Description ........................................................... .495
On Board Diagnosis Logic ................................... .495
DTC Confirmation Procedure .............................. .495
Diagnostic Procedure .......................................... .495
DTC P1217 ENGINE OVER TEMPERATURE ....... .496
Description ........................................................... .496
CONSULT-II Reference Value in Data Monitor Mode .497
On Board Diagnosis Logic ................................... .497
Overall Function Check ....................................... .498
Wiring Diagram .................................................... .500
Diagnostic Procedure .......................................... .502
Main 12 Causes of Overheating .......................... .507
Component Inspection ......................................... .507
DTC P1225 TP SENSOR ....................................... .509
Component Description ....................................... .509
On Board Diagnosis Logic ................................... .509
DTC Confirmation Procedure .............................. .509
Diagnostic Procedure .......................................... .510
Removal and Installation ..................................... .510
DTC P1226 TP SENSOR ....................................... .511
Component Description ....................................... .511
On Board Diagnosis Logic ................................... .511
DTC Confirmation Procedure .............................. .511
Diagnostic Procedure .......................................... .512
Removal and Installation ..................................... .512
DTC P1421 COLD START CONTROL .................. .513
Description ........................................................... .513

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Revision: 2006 July 2007 FX35/FX45
Overall Function Check .......................................
1052
Diagnostic Procedure .......................................... 1053
DTC P0442 EVAP CONTROL SYSTEM ............... 1056
On Board Diagnosis Logic .................................. 1056
DTC Confirmation Procedure .............................. 1057
Diagnostic Procedure .......................................... 1059
DTC P0443 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE ............................. 1065
Description .......................................................... 1065
CONSULT-II Reference Value in Data Monitor Mode 1065
On Board Diagnosis Logic .................................. 1066
DTC Confirmation Procedure .............................. 1066
Wiring Diagram ................................................... 1067
Diagnostic Procedure .......................................... 1069
Component Inspection ........................................ 1072
Removal and Installation ..................................... 1072
DTC P0444, P0445 EVAP CANISTER PURGE VOL-
UME CONTROL SOLENOID VALVE .................... 1073
Description .......................................................... 1073
CONSULT-II Reference Value in Data Monitor Mode 1073
On Board Diagnosis Logic .................................. 1074
DTC Confirmation Procedure .............................. 1074
Wiring Diagram ................................................... 1075
Diagnostic Procedure .......................................... 1077
Component Inspection ........................................ 1078
Removal and Installation ..................................... 1079
DTC P0447 EVAP CANISTER VENT CONTROL
VALVE .................................................................... 1080
Component Description ....................................... 1080
CONSULT-II Reference Value in Data Monitor Mode
1080
On Board Diagnosis Logic .................................. 1080
DTC Confirmation Procedure .............................. 1081
Wiring Diagram ................................................... 1082
Diagnostic Procedure .......................................... 1083
Component Inspection ........................................ 1085
DTC P0448 EVAP CANISTER VENT CONTROL
VALVE .................................................................... 1087
Component Description ....................................... 1087
CONSULT-II Reference Value in Data Monitor Mode 1087
On Board Diagnosis Logic .................................. 1087
DTC Confirmation Procedure .............................. 1088
Wiring Diagram ................................................... 1089
Diagnostic Procedure .......................................... 1090
Component Inspection ........................................ 1091
DTC P0451 EVAP CONTROL SYSTEM PRESSURE
SENSOR ................................................................ 1093
Component Description ....................................... 1093
CONSULT-II Reference Value in Data Monitor Mode 1093
On Board Diagnosis Logic .................................. 1093
DTC Confirmation Procedure .............................. 1094
Diagnostic Procedure .......................................... 1094
Component Inspection ........................................ 1095
DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR ................................................................
1096
Component Description ....................................... 1096
CONSULT-II Reference Value in Data Monitor Mode 1096
On Board Diagnosis Logic ................................... 1096
DTC Confirmation Procedure .............................. 1097
Wiring Diagram .................................................... 1098
Diagnostic Procedure .......................................... 1099
Component Inspection ......................................... 11 0 1
DTC P0453 EVAP CONTROL SYSTEM PRESSURE
SENSOR ................................................................ 110 2
Component Description ....................................... 11 0 2
CONSULT-II Reference Value in Data Monitor Mode 11 0 2
On Board Diagnosis Logic ................................... 11 0 2
DTC Confirmation Procedure .............................. 11 0 3
Wiring Diagram .................................................... 11 0 4
Diagnostic Procedure .......................................... 11 0 5
Component Inspection ......................................... 11 0 9
DTC P0455 EVAP CONTROL SYSTEM ................ 111 0
On Board Diagnosis Logic ...................................1110
DTC Confirmation Procedure ..............................1111
Diagnostic Procedure ..........................................1112
DTC P0456 EVAP CONTROL SYSTEM ................ 111 8
On Board Diagnosis Logic ...................................1118
DTC Confirmation Procedure ..............................1119
Overall Function Check ....................................... 11 2 0
Diagnostic Procedure .......................................... 11 2 1
DTC P0460 FUEL LEVEL SENSOR ...................... 112 7
Component Description ....................................... 11 2 7
On Board Diagnosis Logic ................................... 11 2 7
DTC Confirmation Procedure .............................. 11 2 7
Diagnostic Procedure .......................................... 11 2 8
Removal and Installation ..................................... 11 2 8
DTC P0461 FUEL LEVEL SENSOR ...................... 112 9
Component Description ....................................... 11 2 9
On Board Diagnosis Logic ................................... 11 2 9
Overall Function Check ....................................... 11 2 9
Diagnostic Procedure .......................................... 11 3 0
Removal and Installation ..................................... 11 3 0
DTC P0462, P0463 FUEL LEVEL SENSOR ......... 113 1
Component Description ....................................... 11 3 1
On Board Diagnosis Logic ................................... 11 3 1
DTC Confirmation Procedure .............................. 11 3 1
Diagnostic Procedure .......................................... 11 3 2
Removal and Installation ..................................... 11 3 2
DTC P0500 VSS ..................................................... 113 3
Description ........................................................... 11 3 3
On Board Diagnosis Logic ................................... 11 3 3
DTC Confirmation Procedure .............................. 11 3 3
Overall Function Check ....................................... 11 3 4
Diagnostic Procedure .......................................... 11 3 4
DTC P0506 ISC SYSTEM ...................................... 113 5
Description ........................................................... 11 3 5
On Board Diagnosis Logic ................................... 11 3 5
DTC Confirmation Procedure .............................. 11 3 5
Diagnostic Procedure .......................................... 11 3 6
DTC P0507 ISC SYSTEM ...................................... 113 7
Description ........................................................... 11 3 7

EC-16
[VQ35DE]
INDEX FOR DTC
Revision: 2006 July 2007 FX35/FX45
P0139 0139 HO2S2 (B1) EC-293
P0150 0150 A/F SENSOR1 (B2)EC-229
P0151 0151 A/F SENSOR1 (B2)EC-239
P0152 0152 A/F SENSOR1 (B2)EC-248
P0153 0153 A/F SENSOR1 (B2)EC-257
P0157 0157 HO2S2 (B2)EC-269
P0158 0158 HO2S2 (B2)EC-280
P0159 0159 HO2S2 (B2)EC-293
P0171 0171 FUEL SYS-LEAN-B1EC-304
P0172 0172 FUEL SYS-RICH-B1EC-316
P0174 0174 FUEL SYS-LEAN-B2EC-304
P0175 0175 FUEL SYS-RICH-B2EC-316
P0181 0181 FTT SENSOREC-327
P0182 0182 FTT SEN/CIRCUITEC-333
P0183 0183 FTT SEN/CIRCUITEC-333
P0222 0222 TP SEN 1/CIRCEC-338
P0223 0223 TP SEN 1/CIRCEC-338
P0300 0300 MULTI CYL MISFIREEC-345
P0301 0301 CYL 1 MISFIREEC-345
P0302 0302 CYL 2 MISFIREEC-345
P0303 0303 CYL 3 MISFIREEC-345
P0304 0304 CYL 4 MISFIREEC-345
P0305 0305 CYL 5 MISFIREEC-345
P0306 0306 CYL 6 MISFIREEC-345
P0327 0327 KNOCK SEN/CIRC-B1EC-355
P0328 0328 KNOCK SEN/CIRC-B1EC-355
P0335 0335 CKP SEN/CIRCUITEC-360
P0340 0340 CMP SEN/CIRC-B1EC-367
P0345 0345 CMP SEN/CIRC-B2EC-367
P0420 0420 TW CATALYST SYS-B1EC-376
P0430 0430 TW CATALYST SYS-B2EC-376
P0441 0441 EVAP PURG FLOW/MONEC-382
P0442 0442 EVAP SMALL LEAKEC-387
P0443 0443 PURG VOLUME CONT/VEC-396
P0444 0444 PURG VOLUME CONT/VEC-404
P0445 0445 PURG VOLUME CONT/VEC-404
P0447 0447 VENT CONTROL VALVE EC-411
P0448 0448 VENT CONTROL VALVEEC-418
P0451 0451 EVAP SYS PRES SENEC-424
P0452 0452 EVAP SYS PRES SENEC-427
P0453 0453 EVAP SYS PRES SENEC-433
P0455 0455 EVAP GROSS LEAKEC-441
DTC*1
Items
(CONSULT-II screen terms) Reference page
CONSULT-II
GST*
2ECM*3

INDEX FOR DTC EC-21
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45HLR/C SOL/CIRC P1767 1767 AT- 1 5 8
HO2S2 (B1) P0137 0137EC-269
HO2S2 (B1) P0138 0138EC-280
HO2S2 (B1) P0139 0139EC-293
HO2S2 (B2) P0157 0157EC-269
HO2S2 (B2) P0158 0158EC-280
HO2S2 (B2) P0159 0159EC-293
HO2S2 HTR (B1) P0037 0037EC-172
HO2S2 HTR (B1) P0038 0038EC-172
HO2S2 HTR (B2) P0057 0057EC-172
HO2S2 HTR (B2) P0058 0058EC-172
I/C SOLENOID FNCTN P1754 1754 AT- 1 4 8
I/C SOLENOID/CIRC P1752 1752AT- 1 4 6
IAT SEN/CIRCUIT P0112 0112EC-204
IAT SEN/CIRCUIT P0113 0113EC-204
IAT SENSOR P0127 0127EC-224
ICC COMMAND VALUE*6P1568 1568EC-529
IN PULY SPEED P1715 1715 EC-551
INT/V TIM CONT-B1 P0011 0011EC-160
INT/V TIM CONT-B2 P0021 0021EC-160
INT/V TIM V/CIR-B1 P0075 0075EC-180
INT/V TIM V/CIR-B2 P0081 0081EC-180
ISC SYSTEM P0506 0506EC-467
ISC SYSTEM P0507 0507EC-469
KNOCK SEN/CIRC-B1 P0327 0327EC-355
KNOCK SEN/CIRC-B1 P0328 0328EC-355
L/PRESS SOL/CIRC P0745 0745 AT- 1 2 9
LC/B SOLENOID FNCT P1774 1774AT- 1 6 4
LC/B SOLENOID/CIRC P1772 1772AT- 1 6 2
MAF SEN/CIRCUIT P0101 0101EC-187
MAF SEN/CIRCUIT P0102 0102EC-196
MAF SEN/CIRCUIT P0103 0103EC-196
MULTI CYL MISFIRE P0300 0300EC-345
NATS MALFUNCTION P1610 - P1615 1610 - 1615 EC-52
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED. P0000 0000 —
P-N POS SW/CIRCUIT P0850 0850 EC-488
PNP SW/CIRC P0705 0705 AT- 11 2
PURG VOLUME CONT/V P0443 0443EC-396
PURG VOLUME CONT/V P0444 0444EC-404
PURG VOLUME CONT/V P0445 0445EC-404
PW ST P SEN/CIRC P0550 0550EC-471
Items
(CONSULT-II screen terms) DTC*
1
Reference page
CONSULT-II
GST*
2ECM*3

PREPARATION EC-27
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Revision: 2006 July 2007 FX35/FX45
PREPARATIONPFP:00002
Special Service ToolsNBS003KZ
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name Description
KV10117100
(J-36471-A)
Heated oxygen
sensor wrench Loosening or tightening heated oxygen sensor
with 22 mm (0.87 in) hexagon nut
KV10114400
(J-38365)
Heated oxygen
sensor wrench Loosening or tightening air fuel ratio (A/F) sensor
a: 22 mm (0.87 in)
(J-44321)
Fuel pressure gauge
kit Checking fuel pressure
(J-44321-6)
Fuel pressure adapter Connecting fuel pressure gauge to quick
connector type fuel lines.
(J-44626)
Air fuel ratio (A/F)
sensor wrench Loosening or tightening air fuel ratio (A/F) sensor
1
(J-45488)
Quick connector
release Remove fuel tube quick connectors in engine
room.
S-NT379
S-NT636
LEC642
LBIA0376E
LEM054
PBIC0198E

ON BOARD DIAGNOSTIC (OBD) SYSTEM EC-55
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45A/F SENSOR1 (B1) P0131 0131 —×2 ×EC-239
A/F SENSOR1 (B1) P0132 0132 — ×2 ×EC-248
A/F SENSOR1 (B1) P0133 0133 ××2×EC-257
HO2S2 (B1) P0137 0137 ××2×EC-269
HO2S2 (B1) P0138 0138 ××2×EC-280
HO2S2 (B1) P0139 0139 ××2×EC-293
A/F SENSOR1 (B2) P0150 0150 — ×2 ×EC-229
A/F SENSOR1 (B2) P0151 0151 — ×2 ×EC-239
A/F SENSOR1 (B2) P0152 0152 — ×2 ×EC-248
A/F SENSOR1 (B2) P0153 0153 ××2×EC-257
HO2S2 (B2) P0157 0157 ××2×EC-269
HO2S2 (B2) P0158 0158 ××2×EC-280
HO2S2 (B2) P0159 0159 ××2×EC-293
FUEL SYS-LEAN-B1 P0171 0171 — — 2 ×EC-304
FUEL SYS-RICH-B1 P0172 0172 — — 2 ×EC-316
FUEL SYS-LEAN-B2 P0174 0174 — — 2 ×EC-304
FUEL SYS-RICH-B2 P0175 0175 — — 2 ×EC-316
FTT SENSOR P0181 0181 — — 2 ×EC-327
FTT SEN/CIRCUIT P0182 0182 — — 2 ×EC-333
FTT SEN/CIRCUIT P0183 0183 — — 2 ×EC-333
TP SEN 1/CIRC P0222 0222 — — 1 ×EC-338
TP SEN 1/CIRC P0223 0223 — — 1 ×EC-338
MULTI CYL MISFIRE P0300 0300 — — 2 ×EC-345
CYL 1 MISFIRE P0301 0301 — — 2 ×EC-345
CYL 2 MISFIRE P0302 0302 — — 2 ×EC-345
CYL 3 MISFIRE P0303 0303 — — 2 ×EC-345
CYL 4 MISFIRE P0304 0304 — — 2 ×EC-345
CYL 5 MISFIRE P0305 0305 — — 2 ×EC-345
CYL 6 MISFIRE P0306 0306 — — 2 ×EC-345
KNOCK SEN/CIRC-B1 P0327 0327 — — 2 — EC-355
KNOCK SEN/CIRC-B1 P0328 0328 — — 2 —EC-355
CKP SEN/CIRCUIT P0335 0335 — — 2×EC-360
CMP SEN/CIRC-B1 P0340 0340 — — 2 ×EC-367
CMP SEN/CIRC-B2 P0345 0345 — — 2 ×EC-367
TW CATALYST SYS-B1 P0420 0420 ××2×EC-376
TW CATALYST SYS-B2 P0430 0430 ××2×EC-376
EVAP PURG FLOW/MON P0441 0441 ××2×EC-382
EVAP SMALL LEAK P0442 0442 ××2×EC-387
PURG VOLUME CONT/V P0443 0443 — — 2 ×EC-396
PURG VOLUME CONT/V P0444 0444 — — 2 ×EC-404
PURG VOLUME CONT/V P0445 0445 — — 2 ×EC-404
VENT CONTROL VALVE P0447 0447 — — 2 ×EC-411
Items
(CONSULT-II screen terms) DTC*
1
SRT code
Test value/
Te s t l i m i t
(GST only) Trip MIL
Reference
page
CONSULT-II
GST*
2ECM*3

EC-86
[VQ35DE]
BASIC SERVICE PROCEDURE
Revision: 2006 July 2007 FX35/FX45
2. Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT”
mode with CONSULT-II.
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel pressure.
5. Turn ignition switch OFF.
Without CONSULT-II
1. Remove fuel pump fuse located in IPDM E/R.
2. Start engine.
3. After engine stalls, crank it two or three times to release all fuel pressure.
4. Turn ignition switch OFF.
5. Reinstall fuel pump fuse after servicing fuel system.
FUEL PRESSURE CHECK
CAUTION:
Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
NOTE:

Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel
pressure cannot be completely released because S50 models do not have fuel return system.

Use Fuel Pressure Gauge Kit (J-44321) to check fuel pressure.
1. Release fuel pressure to zero. Refer to EC-85, "
FUEL PRESSURE RELEASE" .
2. Install the inline fuel quick disconnected fitting between fuel damper and fuel injector tube.
3. Connect the fuel pressure test gauge (quick connector adapter hose) to the inline fuel quick disconnected fitting.
4. Turn ignition switch ON and check for fuel leakage.
5. Start engine and check for fuel leakage.
6. Read the indication of fuel pressure gauge.
7. If result is unsatisfactory, go to next step.
8. Check the following.

Fuel hoses and fuel tubes for clogging

Fuel filter for clogging

Fuel pump

Fuel pressure regulator for clogging
If OK, replace fuel pressure regulator.
If NG, repair or replace.
SEF214Y
PBIB1603E
At idling: Approximately 350 kPa (3.57 kg/cm2 , 51 psi)
PBIB1571E

EC-94
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
*: Models with ICC. 2

P0031 P0032 P0051 P0052 Air fuel ratio (A/F) sensor 1 heater

P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater

P0075 P0081 Intake valve timing control solenoid valve

P0130 P0131 P0132 P0133 P0150 P0151 P0152 P0153 P2A00 P2A03 Air fuel ratio (A/F) sensor 1

P0137 P0138 P0139 P0157 P0158 P0159 Heated oxygen sensor 2

P0441 EVAP control system purge flow monitoring

P0443 P0444 P0445 EVAP canister purge volume control solenoid valve

P0447 P0448 EVAP canister vent control valve

P0451 P0452 P0453 EVAP control system pressure sensor

P0550 Power steering pressure sensor

P0603 ECM power supply

P0710 P0717 P0720 P0740 P0744 P0745 P1730 P1752 P1754 P1757 P1759 P1762 P1764 P1767 P1769 P1772
P1774 A/T related sensors, solenoid valves and switches

P1217 Engine over temperature (OVERHEAT)

P1805 Brake switch

P2100 P2103 P2118 Electric throttle control actuator

P2101 Electric throttle control function
3

P0011 P0021 Intake valve timing control

P0171 P0172 P0174 P0175 Fuel injection system function

P0300 - P0306 Misfire

P0420 P0430 Three way catalyst function

P0442 EVAP control system (SMALL LEAK)

P0455 EVAP control system (GROSS LEAK)

P0456 EVAP control system (VERY SMALL LEAK)

P0506 P0507 Idle speed control system

P1148 P1168 Closed loop control

P1211 TCS control unit

P1212 TCS communication line

P1421 COLD START CONTROL

P1564 ICC steering switch/ASCD steering switch

P1568 ICC command valve*

P1572 ICC brake switch/ASCD brake switch

P1574 ICC vehicle speed sensor/ASCD vehicle speed sensor

P1715 Turbine revolution sensor

P2119 Electric throttle control actuator
Priority Detected items (DTC)

TROUBLE DIAGNOSIS EC-127
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
*: Leaving cooling fan OFF with CONSULT-II while engine is running may cause the engine to overheat.
DTC & SRT CONFIRMATION MODE
SRT STATUS Mode
For details, refer to EC-59, "SYSTEM READINESS TEST (SRT) CODE" .
SRT WORK SUPPORT Mode
This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.
DTC WORK SUPPORT Mode
POWER BAL-
ANCE

Engine: After warming up, idle
the engine.

A/C switch: OFF

Selector lever: P or N

Cut off each fuel injector signal
one at a time using CONSULT-II. Engine runs rough or dies.

Harness and connectors

Compression

Fuel injector

Power transistor

Spark plug

Ignition coil
COOLING FAN*

Ignition switch: ON

Turn the cooling fan “HI”, “MID”,
“LOW” and “OFF” using CON-
SULT-II. Cooling fan moves and stops.
Harness and connectors

Cooling fan motor

IPDM E/R
ENG COOLANT
TEMP

Engine: Return to the original
trouble condition

Change the engine coolant tem-
perature using CONSULT-II. If trouble symptom disappears, see
CHECK ITEM.

Harness and connectors

Engine coolant temperature sen-
sor

Fuel injector
FUEL PUMP
RELAY

Ignition switch: ON
(Engine stopped)

Turn the fuel pump relay “ON”
and “OFF” using CONSULT-II
and listen to operating sound. Fuel pump relay makes the operat-
ing sound.
Harness and connectors

Fuel pump relay
PURG VOL
CONT/V

Engine: After warming up, run
engine at 1,500 rpm.

Change the EVAP canister purge
volume control solenoid valve
opening percent using CON-
SULT-II. Engine speed changes according to
the opening percent.
Harness and connectors

Solenoid valve
FUEL/T TEMP
SEN

Change the fuel tank temperature using CONSULT-II.
VENT CON-
TROL/V

Ignition switch: ON
(Engine stopped)

Turn solenoid valve “ON” and
“OFF” with the CONSULT-II and
listen to operating sound. Solenoid valve makes an operating
sound.
Harness and connectors

Solenoid valve
V/T ASSIGN
ANGLE

Engine: Return to the original
trouble condition

Change intake valve timing using
CONSULT-II. If trouble symptom disappears, see
CHECK ITEM.

Harness and connectors

Intake valve timing control sole-
noid valve
TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
Test mode Test item Corresponding DTC No. Reference page
EVAPORATIVE SYS-
TEM PURG FLOW P0441 P0441
EC-382
EVP SML LEAK P0442/P1442* P0442EC-387
EVP V/S LEAK P0456/P1456* P0456EC-449
PURG VOL CN/V P1444 P0443EC-396

EC-396
[VQ35DE]
DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Revision: 2006 July 2007 FX35/FX45
DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
PFP:14920
DescriptionNBS003WH
SYSTEM DESCRIPTION
*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM through CAN communication line.
This system controls flow rate of fuel vapor from the EVAP canister. The opening of the vapor by-pass pas-
sage in the EVAP canister purge volume control solenoid valve changes to control the flow rate. The EVAP
canister purge volume control solenoid valve repeats ON/OFF operation according to the signal sent from the
ECM. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is
determined by considering various engine conditions. When the engine is operating, the flow rate of fuel vapor
from the EVAP canister is regulated as the air flow changes.
COMPONENT DESCRIPTION
The EVAP canister purge volume control solenoid valve uses a ON/
OFF duty to control the flow rate of fuel vapor from the EVAP canis-
ter. The EVAP canister purge volume control solenoid valve is
moved by ON/OFF pulses from the ECM. The longer the ON pulse,
the greater the amount of fuel vapor that will flow through the valve.
CONSULT-II Reference Value in Data Monitor ModeNBS003WI
Specification data are reference values.
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
1
EVAP canister
purge flow control EVAP canister purge vol-
ume control solenoid valve
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Battery Battery voltage*
1
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Fuel tank temperature sensor Fuel temperature in fuel tank
Wheel sensor Vehicle speed*
2
SEF337U
MONITOR ITEM CONDITION SPECIFICATION
PURG VOL C/V

Engine: After warming up

Selector lever: P or N

Air conditioner switch: OFF

No load Idle
(Accelerator pedal is not depressed
even slightly, after engine starting) 0%
2,000 rpm —