diagram INFINITI FX35 2004 Service Manual

FUEL PUMP CIRCUIT
EC-1281
[VK45DE]
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Revision: 2004 November 2004 FX35/FX45
Wiring DiagramABS00CEW
TBWH0112E

EC-1284
[VK45DE]
FUEL PUMP CIRCUIT
Revision: 2004 November 2004 FX35/FX45
6. CHECK 15A FUSE
1. Turn ignition switch OFF.
2. Disconnect 15A fuse.
3. Check 15A fuse.
OK or NG
OK >> GO TO 7.
NG >> Replace fuse.
7. CHECK CONDENSER POWER SUPPLY CIRCUIT-II
1. Disconnect IPDM E/R harness connector E8.
2. Check harness continuity between IPDM E/R terminal 39 and condenser terminal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 14.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E206, B6

Harness for open or short between IPDM E/R and condenser
>> Repair harness or connectors.
9. CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between condenser terminal 2 and ground.
Refer to Wiring Diagram.
2. Also check harness for short to power.
OK or NG
OK >> GO TO 10.
NG >> Repair open circuit or short to power in harness or connectors.
10. CHECK CONDENSER
Refer to EC-1285, "
Component Inspection" .
OK or NG
OK >> GO TO 11.
NG >> Replace condenser.Continuity should exist.
Continuity should exist.

FUEL PUMP CIRCUIT
EC-1285
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Revision: 2004 November 2004 FX35/FX45
11 . CHECK FUEL PUMP POWER SUPPLY AND GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect “fuel level sensor unit and fuel pump” harness con-
nector.
3. Disconnect harness connector E206, B6.
4. Check harness continuity between “fuel level sensor unit and
fuel pump” terminal 1 and harness connector B6 terminal 4, “fuel
level sensor unit and fuel pump” terminal 3 and ground.
Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 13.
NG >> GO TO 12.
12. DETECT MALFUNCTIONING PART
Check the following.

Harness connector B6

Harness for open or short between “fuel level sensor unit and fuel pump” and harness connector B6

Harness for open or short between “fuel level sensor unit and fuel pump” and ground
>> Repair open circuit or short to ground or short to power in harness or connectors.
13. CHECK FUEL PUMP
Refer to EC-1285, "
Component Inspection" .
OK or NG
OK >> GO TO 14.
NG >> Replace fuel pump.
14. CHECK INTERMITTENT INCIDENT
Refer to EC-784, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R.
NG >> Repair or replace harness or connectors.
Component InspectionABS00CEY
FUEL PUMP
1. Disconnect “fuel level sensor unit and fuel pump” harness connector.
2. Check resistance between “fuel level sensor unit and fuel pump”
terminals 1 and 3.Continuity should exist.
PBIB1507E
Resistance: Approximately 0.2 - 5.0Ω [at 25°C (77°F)]
SEC918C

EC-1288
[VK45DE]
REFRIGERANT PRESSURE SENSOR
Revision: 2004 November 2004 FX35/FX45
Wiring DiagramABS00CF1
TBWM0265E

REFRIGERANT PRESSURE SENSOR
EC-1291
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Revision: 2004 November 2004 FX35/FX45
5. CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between refrigerant pressure sensor terminal 3 and ECM terminal 67.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E17, F47

Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 70 and refrigerant pressure sensor terminal 2.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E17, F47

Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK INTERMITTENT INCIDENT
Refer to EC-784, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace refrigerant pressure sensor.
NG >> Repair or replace.
Removal and InstallationABS00CF3
REFRIGERANT PRESSURE SENSOR
Refer to ATC-155, "Removal and Installation of Refrigerant Pressure Sensor" . Continuity should exist.
Continuity should exist.

EC-1294
[VK45DE]
ICC BRAKE SWITCH
Revision: 2004 November 2004 FX35/FX45
Wiring DiagramABS00CF9
TBWM0275E

EC-1298
[VK45DE]
ICC BRAKE SWITCH
Revision: 2004 November 2004 FX35/FX45
6. DETECT MALFUNCTIONING PART
Check the following.

Fuse block (J/B) connector M201

10A fuse

Harness for open or short between ICC brake switch and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK ICC BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I
1. Turn ignition switch OFF.
2. Check harness continuity between ICC brake hold relay terminal 3 and ICC brake switch terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK ICC BRAKE SWITCH
Refer to EC-1301, "
Component Inspection" .
OK or NG
OK >> GO TO 17.
NG >> Replace ICC brake switch.
9. CHECK ICC BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ICC brake hold relay terminal 4 and ECM terminal 108.
Refer Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 11.
NG >> GO TO 10.
10. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E211, M41

Harness for open or short between ICC brake hold relay and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
11 . CHECK ICC BRAKE HOLD RELAY
Refer to EC-1301, "
Component Inspection" .
OK >> GO TO 17.
NG >> Replace ICC brake fold relay.Continuity should exist.
Continuity should exist.

ICC BRAKE SWITCH
EC-1299
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Revision: 2004 November 2004 FX35/FX45
12. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check voltage between stop lamp switch terminal 1 and ground
with CONSULT -II or tester.
OK or NG
OK >> GO TO 14.
NG >> GO TO 13.
13. DETECT MALFUNCTIONING PART
Check the following.

Fuse block (J/B) connector E201

10A fuse

Joint connector-2

Harness for open or short between stop lamp switch and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
14. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 16.
NG >> GO TO 15.
PBIB1539E
Voltage: Battery voltage
PBIB1184E
Continuity should exist.

ASCD BRAKE SWITCH
EC-1303
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Revision: 2004 November 2004 FX35/FX45
Wiring DiagramABS00CFE
TBWM0266E

EC-1306
[VK45DE]
ASCD BRAKE SWITCH
Revision: 2004 November 2004 FX35/FX45
3. CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Turn ignition switch ON.
4. Check voltage between ASCD brake switch terminal 1 and
ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.

Fuse block (J/B) connector E201

10A fuse

Harness for open or short between ASCD brake switch and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 108 and ASCD brake switch terminal 2.
Refer to Wiring Diagram.
4. Also check harness for short to ground or short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E211, M41

Harness for open or short between ECM and ASCD brake switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB1506E
Voltage: Battery voltage
PBIB0857E
Continuity should exist.