INFINITI FX35 2006 Service Manual

SNOW MODE SWITCH EC-667
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Revision: 2006 December 2006 FX35/FX45
SNOW MODE SWITCHPFP:25310
DescriptionNBS0040B
The snow mode switch signal is sent to the “unified meter and A/C amp.” from the snow mode switch. The
“unified meter and A/C amp.” then sends the signal to the ECM by CAN communication line.
The snow mode is used for driving or starting the vehicle on snowy roads or slippery areas. If the snow mode
is activated, the vehicle speed will not be accelerated immediately than your original pedal in due to avoid the
vehicle slip. In other words, ECM controls the rapid engine torque change by controlling the electric throttle
control actuator operating speed.
CONSULT-II Reference Value in the Data Monitor ModeNBS0040C
MONITOR ITEM CONDITION SPECIFICATION
SNOW MODE SW

Ignition switch: ON Snow mode switch: ON ON
Snow mode switch: OFF OFF

EC-668
[VQ35DE]
SNOW MODE SWITCH
Revision: 2006 December 2006 FX35/FX45
Wiring DiagramNBS0040D
TBWM1415E

SNOW MODE SWITCH EC-669
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Revision: 2006 December 2006 FX35/FX45
Diagnostic ProcedureNBS0040E
1. CHECK SNOW MODE SWITICH OVERALL FUNCTION-I
1. Turn ignition switch ON.
2. Select “SNOW MODE SW” in “DATA MONITOR” mode with CONSULT-II.
3. Check “SNOW MODE SW” indication under the following condi- tions.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK SNOW MODE SWITICH OVERALL FUNCTION-II
1. Turn ignition switch ON.
2. Start engine.
3. Check the snow mode indicator in the snow mode switch under the following condition.
OK or NG
OK >> INSPECTION END
NG >> GO TO 7.
3. CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to DI-31, "
SELF-DIAG RESULTS" .
OK or NG
OK >> GO TO 4.
NG >> Go to DI-28, "
UNIFIED METER AND A/C AMP" .
4. CHECK SNOW MODE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect snow mode switch harness connector.
3. Turn ignition switch ON.
4. Check voltage between snow mode switch terminal 1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
CONDITION INDICATION
Snow mode switch: ON ON
Snow mode switch: OFF OFF
PBIB2009E
CONDITION INDICATOR
Snow mode switch: ON Illuminated
Snow mode switch: OFF Not illuminated
Voltage: Battery voltage.
PBIB2562E

EC-670
[VQ35DE]
SNOW MODE SWITCH
Revision: 2006 December 2006 FX35/FX45
5. DETECT MALFUNCTIONING PART
Check the following.

Fuse block (J/B) M1

10A fuse

Harness for open or short between snow mode switch and fuse.
>> Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK SNOW MODE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect “unified meter and A/C amp.” harness connector.
3. Check harness continuity between snow mode switch terminal 4 and “unified meter and A/C amp.” termi- nal 12. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body. Refer to EC-818, "
Ground Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Repair or replace ground connections.
8. CHECK SNOW MODE INDICATOR LAMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between snow mode switch terminal 2 and ground. Refer to Wiring Diagram.
2. Also check harness for short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to power in harness or connectors. Continuity should exist.
PBIB2625E
Continuity should exist.

SNOW MODE SWITCH EC-671
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Revision: 2006 December 2006 FX35/FX45
9. CHECK SNOW MODE SWITCH
Refer to EC-1350, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace snow mode switch.
10. CHECK INTERMITTENT INCIDENT
Refer to EC-811, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Component InspectionNBS0040F
SNOW MODE SWITCH
1. Check continuity between snow mode switch terminals 1 and 4
under the following conditions.
If NG, replace snow mode switch.
If OK, go to following step.
2. Check continuity between snow mode switch terminals 2 and 4 under the following conditions.
If NG, replace snow mode switch.
CONDITION CONTINUITY
Snow mode switch: ON Should exist.
Snow mode switch: OFF Should not exist.
PBIB2563E
CONDITION CONTINUITY 1 Should exist.
2 Should not exist.
PBIB2564E

EC-672
[VQ35DE]
MIL AND DATA LINK CONNECTOR
Revision: 2006 December 2006 FX35/FX45
MIL AND DATA LINK CONNECTORPFP:24814
Wiring DiagramNBS0040G
TBWM1413E

MIL AND DATA LINK CONNECTOR EC-673
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Revision: 2006 December 2006 FX35/FX45
TBWM1414E

EC-674
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SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2006 December 2006 FX35/FX45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Fuel PressureNBS0040H
Idle Speed and Ignition TimingNBS0040I
*1: Under the following conditions:

Air conditioner switch: OFF

Electric load: OFF (Lights, heater fan & rear window defogger)

Steering wheel: Kept in straight-ahead position
Calculated Load ValueNBS0040J
Mass Air Flow SensorNBS0040K
*: Engine is warmed up to normal operating temperature and running under no load.
Intake Air Temperature SensorNBS0040L
Engine Coolant Temperature SensorNBS0040M
Air Fuel Ratio (A/F) Sensor 1 HeaterNBS0040N
Heated Oxygen sensor 2 HeaterNBS0040O
Crankshaft Position Sensor (POS)NBS0040P
Refer to EC-367, "Component Inspection" .
Camshaft Position Sensor (PHASE)NBS0040Q
Refer to EC-376, "Component Inspection" .
Throttle Control MotorNBS0040R
Fuel pressure at idling kPa (kg/cm2 , psi) Approximately 350 (3.57, 51)
Target idle speed
No load*1 (in P or N position) 650
±50 rpm
Air conditioner: ON In P or N position 700 rpm or more
Ignition timing In P or N position 15 ° ± 5 ° BTDC
Calculated load value% (Using CONSULT-II or GST)
At idle 5 - 35
At 2,500 rpm 5 - 35
Supply voltageBattery voltage (11 - 14V)
Output voltage at idle 1.0 - 1.2V*
Mass air flow (Using CONSULT-II or GST) 2.0 - 6.0 g·m/sec at idle*
7.0 - 20.0 g·m/sec at 2,500 rpm*
Temperature °C ( °F) Resistance k Ω
25 (77) 1.800 - 2.200
80 (176) 0.283 - 0.359
Temperature °C ( °F) Resistance k Ω
20 (68) 2.1 - 2.9
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
Resistance [at 25°C (77 °F)] 2.3 - 4.3 Ω
Resistance [at 25°C (77 °F)] 5.0 - 7.0 Ω
Resistance [at 25°C (77 °F)] Approximately 1 - 15 Ω

SERVICE DATA AND SPECIFICATIONS (SDS) EC-675
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Revision: 2006 December 2006 FX35/FX45
Fuel InjectorNBS0040S
Fuel PumpNBS0040T
Resistance [at 10 - 60 °C (50 - 140 °F)] 11.1 - 14.5 Ω
Resistance [at 25°C (77 °F)] 0.2 - 5.0 Ω

EC-676
[VK45DE]
INDEX FOR DTC
Revision: 2006 December 2006 FX35/FX45
[VK45DE]INDEX FOR DTCPFP:00024
DTC No. IndexNBS004JK
NOTE:

If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-819, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .

If DTC U1010 is displayed with other DTC, first perform the trouble diagnosis for DTC U1010. Refer
to EC-822, "
DTC U1010 CAN COMMUNICATION" .
DTC*1
Items
(CONSULT-II screen terms) Reference page
CONSULT-II
GST*
2ECM*3
U1000 1000*4CAN COMM CIRCUIT EC-819
U1001
1001*4CAN COMM CIRCUIT EC-819
U1010 1010 CONTROL UNIT(CAN) EC-822
P0000 0000 NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED. —
P0011 0011 INT/V TIM CONT-B1 EC-824
P0021 0021 INT/V TIM CONT-B2 EC-824
P0031 0031 A/F SEN1 HTR (B1)EC-836
P0032 0032 A/F SEN1 HTR (B1)EC-836
P0037 0037 HO2S2 HTR (B1)EC-843
P0038 0038 HO2S2 HTR (B1)EC-843
P0051 0051 A/F SEN1 HTR (B2)EC-836
P0052 0052 A/F SEN1 HTR (B2)EC-836
P0057 0057 HO2S2 HTR (B2)EC-843
P0058 0058 HO2S2 HTR (B2)EC-843
P0075 0075 INT/V TIM V/CIR-B1EC-851
P0081 0081 INT/V TIM V/CIR-B2EC-851
P0101 0101 MAF SEN/CIRCUITEC-858
P0102 0102 MAF SEN/CIRCUITEC-867
P0103 0103 MAF SEN/CIRCUITEC-867
P0112 0112 IAT SEN/CIRCUITEC-874
P0113 0113 IAT SEN/CIRCUITEC-874
P0117 0117 ECT SEN/CIRCEC-879
P0118 0118 ECT SEN/CIRCEC-879
P0122 0122 TP SEN2/CIRC EC-885
P0123 0123 TP SEN2/CIRCEC-885
P0125 0125 ECT SENSOREC-892
P0127 0127 IAT SENSOREC-895
P0128 0128 THERMSTAT FNCTNEC-898
P0130 0130 A/F SENSOR1 (B1)EC-900
P0131 0131 A/F SENSOR1 (B1)EC-910
P0132 0132 A/F SENSOR1 (B1)EC-919
P0133 0133 A/F SENSOR1 (B1)EC-928
P0137 0137 HO2S2 (B1)EC-940
P0138 0138 HO2S2 (B1)EC-951