Page 2721 of 4462
![INFINITI FX35 2006 Service Manual IGNITION SIGNAL EC-1337
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
8. CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Ch INFINITI FX35 2006 Service Manual IGNITION SIGNAL EC-1337
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
8. CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Ch](/manual-img/42/57019/w960_57019-2720.png)
IGNITION SIGNAL EC-1337
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
8. CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between condenser terminal 2 and ground. Refer to Wiring Diagram.
3. 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.
9. CHECK CONDENSER
Refer to EC-1339, "
Component Inspection"
OK or NG
OK >> GO TO 10.
NG >> Replace condenser.
10. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
1. Reconnect all harness connectors disconnected.
2. Disconnect ignition coil harness connector.
3. Turn ignition switch ON.
4. Check voltage between ignition coil terminal 3 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 12.
NG >> GO TO 11. Continuity should exist.
: Vehicle front 1. Ignition coil
(with power transistor)
(bank 2) 2. Ignition coil
(with power transistor)
(bank 1)
Voltage: Battery voltage
PBIB3234E
PBIB0138E
Page 2722 of 4462
![INFINITI FX35 2006 Service Manual EC-1338
[VK45DE]
IGNITION SIGNAL
Revision: 2006 December 2006 FX35/FX45
11 . DETECT MALFUNCTIONING PART
Check the following.
Harness connector F49
Harness for open or short between ignition coil a INFINITI FX35 2006 Service Manual EC-1338
[VK45DE]
IGNITION SIGNAL
Revision: 2006 December 2006 FX35/FX45
11 . DETECT MALFUNCTIONING PART
Check the following.
Harness connector F49
Harness for open or short between ignition coil a](/manual-img/42/57019/w960_57019-2721.png)
EC-1338
[VK45DE]
IGNITION SIGNAL
Revision: 2006 December 2006 FX35/FX45
11 . DETECT MALFUNCTIONING PART
Check the following.
Harness connector F49
Harness for open or short between ignition coil and harness connector F49
>> Repair or replace harness or connectors.
12. CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between ignition coil terminal 2 and ground. Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 13.
NG >> Repair open circuit or short to power in harness or connectors.
13. CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 46, 60, 61, 62, 65, 79, 80, 81 and ignition coil 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 >> Repair open circuit or short to ground or short to power in harness or connectors.
14. CHECK IGNITION COIL WITH POWER TRANSISTOR
Refer to EC-1339, "
Component Inspection" .
OK or NG
OK >> GO TO 15.
NG >> Replace ignition coil with power transistor.
15. CHECK INTERMITTENT INCIDENT
Refer to EC-811, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Continuity should exist.
Continuity should exist.
Page 2723 of 4462
![INFINITI FX35 2006 Service Manual IGNITION SIGNAL EC-1339
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
Component InspectionNBS004GW
IGNITION COIL WITH POWER TRANSISTOR
CAUTION:
Do the followi INFINITI FX35 2006 Service Manual IGNITION SIGNAL EC-1339
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
Component InspectionNBS004GW
IGNITION COIL WITH POWER TRANSISTOR
CAUTION:
Do the followi](/manual-img/42/57019/w960_57019-2722.png)
IGNITION SIGNAL EC-1339
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
Component InspectionNBS004GW
IGNITION COIL WITH POWER TRANSISTOR
CAUTION:
Do the following procedure in the place where ventilation is good without the combustible.
1. Turn ignition switch OFF.
2. Disconnect ignition coil harness connector.
3. Check resistance between ignition coil terminals as follows.
4. If NG, replace ignition coil with power transistor. If OK, go to next step.
5. Turn ignition switch OFF.
6. Reconnect all harness connectors disconnected.
7. Remove fuel pump fuse in IPDM E/R to release fuel pressure.
NOTE:
Do not use CONSULT-II to release fuel pressure, or fuel pres-
sure applies again during the following procedure.
8. Start engine.
9. After engine stalls, crank it two or three times to release all fuel pressure.
10. Turn ignition switch OFF.
11. Remove all ignition coil harness connectors to avoid the electri- cal discharge from the ignition coils.
12. Remove ignition coil and spark plug of the cylinder to be checked.
13. Crank engine for five seconds or more to remove combustion gas in the cylinder.
14. Connect spark plug and harness connector to ignition coil.
15. Fix ignition coil using a rope etc. with gap of 13 - 17 mm between the edge of the spark plug and grounded metal portion
as shown in the figure.
16. Crank engine for about three seconds, and check whether spark is generated between the spark plug and the grounded metal
portion.
CAUTION:
Do not approach to the spark plug and the ignition coil
within 50cm. Be careful not to get an electrical shock
while checking, because the electrical discharge voltage
becomes 20kV or more.
It might cause to damage the ignition coil if the gap of more than 17 mm is taken.
NOTE:
When the gap is less than 13 mm, the spark might be generated even if the coil is malfunctioning.
17. If NG, replace ignition coil with power transistor.
CONDENSER
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
Terminal No. (Polarity) Resistance Ω [at 25 °C (77 °F)]
1 and 2 Except 0 or ∞
1 and 3 Except 0
2 and 3
Spark should be generated.
PBIB0847E
PBIB1482E
PBIB2325E
Page 2724 of 4462
EC-1340
[VK45DE]
IGNITION SIGNAL
Revision: 2006 December 2006 FX35/FX45
3. Check resistance between condenser terminals 1 and 2.
Removal and InstallationNBS004GX
IGNITION COIL WITH POWER TRANSISTOR
Refer to EM-191, "IGNITION COIL" .
Resistance: Above 1 M
Ω [at 25 °C (77 °F)]
PBIB0794E
Page 2725 of 4462
REFRIGERANT PRESSURE SENSOR EC-1341
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
REFRIGERANT PRESSURE SENSORPFP:92136
Component DescriptionNBS004HA
The refrigerant pressure sensor is installed at the condenser of the
air conditioner system. The sensor uses an electrostatic volume
pressure transducer to convert refrigerant pressure to voltage. The
voltage signal is sent to ECM, and ECM controls cooling fan system.
PBIB1492E
PBIB2657E
Page 2726 of 4462
EC-1342
[VK45DE]
REFRIGERANT PRESSURE SENSOR
Revision: 2006 December 2006 FX35/FX45
Wiring DiagramNBS004HB
TBWM0265E
Page 2727 of 4462
![INFINITI FX35 2006 Service Manual REFRIGERANT PRESSURE SENSOR EC-1343
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
Specification data are reference values and are measured between each termina INFINITI FX35 2006 Service Manual REFRIGERANT PRESSURE SENSOR EC-1343
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
Specification data are reference values and are measured between each termina](/manual-img/42/57019/w960_57019-2726.png)
REFRIGERANT PRESSURE SENSOR EC-1343
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2006 December 2006 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureNBS004HC
1. CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Turn A/C switch and blower fan switch ON.
3. Check voltage between ECM terminal 70 and ground with CON- SULT-II or tester.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
2. CHECK GROUND CONNECTIONS
1. Turn A/C switch and blower fan switch OFF.
2. Turn ignition switch OFF.
3. Loosen and retighten three ground screws on the body. Refer to EC-818, "
Ground Inspection" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace ground connections.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
49 PU Sensor power supply
(Refrigerant pressure sen-
sor) [Ignition switch: ON]
Approximately 5V
67 B/W Sensor ground [Engine is running]
Warm-up condition
Idle speed Approximately 0V
70 L/R Refrigerant pressure sensor [Engine is running]
Warm-up condition
Both A/C switch and blower fan motor
switch: ON (Compressor operates) 1.0 - 4.0V
Voltage: 1.0 - 4.0V
PBIB1188E
PBIB2195E
Page 2728 of 4462
![INFINITI FX35 2006 Service Manual EC-1344
[VK45DE]
REFRIGERANT PRESSURE SENSOR
Revision: 2006 December 2006 FX35/FX45
3. CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Disconnect refrigerant pressure sensor harness connect INFINITI FX35 2006 Service Manual EC-1344
[VK45DE]
REFRIGERANT PRESSURE SENSOR
Revision: 2006 December 2006 FX35/FX45
3. CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Disconnect refrigerant pressure sensor harness connect](/manual-img/42/57019/w960_57019-2727.png)
EC-1344
[VK45DE]
REFRIGERANT PRESSURE SENSOR
Revision: 2006 December 2006 FX35/FX45
3. CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Disconnect refrigerant pressure sensor harness connector.
2. Turn ignition switch ON.
3. Check voltage between refrigerant pressure sensor 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.
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.
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.
PBIB1492E
Voltage: Approximately 5V
PBIB0188E
Continuity should exist.