2008 INFINITI FX35 Service Manual

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Page 1657 of 3924

INFINITI FX35 2008 Service Manual
DTC P0550 PSP SENSOREC-417
< SERVICE INFORMATION > [VQ35DE]
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3. Check voltage between ECM terminal 12 and ground under the
following conditions.
Removal and Installatio

Page 1658 of 3924

INFINITI FX35 2008 Service Manual
EC-418
< SERVICE INFORMATION >[VQ35DE]
DTC P0603 ECM POWER SUPPLY
DTC P0603 ECM POWER SUPPLY
Component DescriptionINFOID:0000000001326262
Battery voltage is supplied to the ECM even when the ignition

Page 1659 of 3924

INFINITI FX35 2008 Service Manual
DTC P0603 ECM POWER SUPPLYEC-419
< SERVICE INFORMATION > [VQ35DE]
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Wiring DiagramINFOID:0000000001326265
Specification data are reference values
and are measured betwe

Page 1660 of 3924

INFINITI FX35 2008 Service Manual
EC-420
< SERVICE INFORMATION >[VQ35DE]
DTC P0603 ECM POWER SUPPLY
Diagnosis Procedure
INFOID:0000000001326266
1.CHECK ECM POWER SUPPLY
1. Turn ignition switch OFF.
2. Check voltage between ECM termin

Page 1661 of 3924

INFINITI FX35 2008 Service Manual
DTC P0603 ECM POWER SUPPLYEC-421
< SERVICE INFORMATION > [VQ35DE]
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1. Replace ECM.
2. Perform initialization of IVIS(NATS) system and
registration of all IVIS(NATS) ig

Page 1662 of 3924

INFINITI FX35 2008 Service Manual
EC-422
< SERVICE INFORMATION >[VQ35DE]
DTC P0605 ECM
DTC P0605 ECM
Component DescriptionINFOID:0000000001326267
The ECM consists of a microcomputer and connectors for signal
input and output and for

EC-422
< SERVICE INFORMATION >[VQ35DE]
DTC P0605 ECM
DTC P0605 ECM
Component DescriptionINFOID:0000000001326267
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
On Board Diagn
osis LogicINFOID:0000000001326268
This self-diagnosis has one or two trip detection logic.
FAIL-SAFE MODE
ECM enters fail-safe mode when the malfunction A is detected.
DTC Confirmation ProcedureINFOID:0000000001326269
Perform “PROCEDURE FOR MALFUNCTION A” first. If the 1st trip DTC cannot be confirmed, perform
PROCEDURE FOR MALFUNCTION B. If there is no malfunction on PROCEDURE FOR MALFUNCTION
B, perform PROCEDURE FOR MALFUNCTION C.
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
PROCEDURE FOR MALFUNCTION A
1. Turn ignition switch ON.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-423, "
Diagnosis Procedure".
PROCEDURE FOR MALFUNCTION B
With CONSULT-III
1. Turn ignition switch ON and wait at least 1 second.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Check 1st trip DTC.
4. If 1st trip DTC is detected, go to EC-423, "
Diagnosis Procedure".
PROCEDURE FOR MALFUNCTION C
With CONSULT-III
1. Turn ignition switch ON and wait at least 1 second.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
PBIB1164E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0605
0605 Engine control module A) ECM calculation function is malfunctioning.
ECM
B) ECM EEP-ROM system is malfunctioning.
C) ECM self shut-off function is malfunctioning.
Detected items Engine operation condition in fail-safe mode
Malfunction A ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5
degrees) by the return spring.
ECM deactivates ICC operation.
ECM deactivates ASCD operation.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 1663 of 3924

INFINITI FX35 2008 Service Manual
DTC P0605 ECMEC-423
< SERVICE INFORMATION > [VQ35DE]
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3. Repeat step 2 for 32 times.
4. Check 1st trip DTC.
5. If 1st trip DTC is detected, go to
EC-423, "
Diagnosis P

Page 1664 of 3924

INFINITI FX35 2008 Service Manual
EC-424
< SERVICE INFORMATION >[VQ35DE]
DTC P0643 SENSOR POWER SUPPLY
DTC P0643 SENSOR POWER SUPPLY
On Board Diagn
osis LogicINFOID:0000000001326271
This self-diagnosis has the one trip detection logi

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