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![INFINITI FX35 2007 Service Manual DTC P0550 PSP SENSOR EC-473
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Specification data are reference values and are measured between each terminal and groun INFINITI FX35 2007 Service Manual DTC P0550 PSP SENSOR EC-473
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Specification data are reference values and are measured between each terminal and groun](/manual-img/42/57018/w960_57018-1848.png)
DTC P0550 PSP SENSOR EC-473
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Revision: 2006 July 2007 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 ProcedureNBS003T3
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body. Refer to EC-153, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
12 R/G Power steering pressure
sensor [Engine is running]
Steering wheel: Being turned.
0.5 - 4.5V
[Engine is running]
Steering wheel: Not being turned. 0.4 - 0.8V
67 B/W Sensor ground [Engine is running]
Warm-up condition
Idle speed Approximately 0V
68 BR Sensor power supply
(Power steering pressure
sensor) [Ignition switch: ON]
Approximately 5V
PBIB2625E
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![INFINITI FX35 2007 Service Manual EC-474
[VQ35DE]
DTC P0550 PSP SENSOR
Revision: 2006 July 2007 FX35/FX45
2. CHECK POWER STEERING PRESSURE (PSP) SENSOR POWER SUPPLY CIRCUIT
1. Disconnect power steering pressure (PSP) sensor harness c INFINITI FX35 2007 Service Manual EC-474
[VQ35DE]
DTC P0550 PSP SENSOR
Revision: 2006 July 2007 FX35/FX45
2. CHECK POWER STEERING PRESSURE (PSP) SENSOR POWER SUPPLY CIRCUIT
1. Disconnect power steering pressure (PSP) sensor harness c](/manual-img/42/57018/w960_57018-1849.png)
EC-474
[VQ35DE]
DTC P0550 PSP SENSOR
Revision: 2006 July 2007 FX35/FX45
2. CHECK POWER STEERING PRESSURE (PSP) SENSOR POWER SUPPLY CIRCUIT
1. Disconnect power steering pressure (PSP) sensor harness con- nector.
2. Turn ignition switch ON.
3. Check voltage between PSP sensor terminal 1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3. CHECK POWER STEERING PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between PSP 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 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK POWER STEERING PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 12 and PSP 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 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK POWER STEERING PRESSURE SENSOR
Refer to EC-475, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace power steering pressure sensor.
PBIB1579E
Voltage: Approximately 5V
PBIB0188E
Continuity should exist.
Continuity should exist.
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DTC P0550 PSP SENSOR EC-475
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6. CHECK INTERMITTENT INCIDENT
Refer to EC-147, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Component InspectionNBS003T4
POWER STEERING PRESSURE SENSOR
1. Reconnect all harness connectors disconnected.
2. Start engine and let it idle.
3. Check voltage between ECM terminal 12 and ground under the following conditions.
Removal and InstallationNBS003T5
POWER STEERING PRESSURE SENSOR
Refer to PS-41, "HYDRAULIC LINE" .
Condition Voltage
Steering wheel: Being turned 0.5 - 4.5V
Steering wheel: Not being turned 0.4 - 0.8V
MBIB0126E
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![INFINITI FX35 2007 Service Manual EC-476
[VQ35DE]
DTC P0603 ECM POWER SUPPLY
Revision: 2006 July 2007 FX35/FX45
DTC P0603 ECM POWER SUPPLYPFP:23710
Component DescriptionNBS003TI
Battery voltage is supplied to the ECM even when the ign INFINITI FX35 2007 Service Manual EC-476
[VQ35DE]
DTC P0603 ECM POWER SUPPLY
Revision: 2006 July 2007 FX35/FX45
DTC P0603 ECM POWER SUPPLYPFP:23710
Component DescriptionNBS003TI
Battery voltage is supplied to the ECM even when the ign](/manual-img/42/57018/w960_57018-1851.png)
EC-476
[VQ35DE]
DTC P0603 ECM POWER SUPPLY
Revision: 2006 July 2007 FX35/FX45
DTC P0603 ECM POWER SUPPLYPFP:23710
Component DescriptionNBS003TI
Battery voltage is supplied to the ECM even when the ignition switch
is turned OFF for the ECM memory function of the DTC memory, the
air-fuel ratio feedback compensation value memory, the idle air vol-
ume learning value memory, etc.
On Board Diagnosis LogicNBS003TJ
DTC Confirmation ProcedureNBS003TK
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
5. Repeat steps 3 and 4 for four times.
6. If 1st trip DTC is detected, go to EC-478, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
PBIB1164E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0603
0603 ECM power supply cir-
cuit ECM back-up RAM system does not function
properly.
Harness or connectors
[ECM power supply (back-up) circuit is
open or shorted.]
ECM
SEF058Y
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DTC P0603 ECM POWER SUPPLY EC-477
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Revision: 2006 July 2007 FX35/FX45
Wiring DiagramNBS003TL
TBWM1393E
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![INFINITI FX35 2007 Service Manual EC-478
[VQ35DE]
DTC P0603 ECM POWER SUPPLY
Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM groun INFINITI FX35 2007 Service Manual EC-478
[VQ35DE]
DTC P0603 ECM POWER SUPPLY
Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM groun](/manual-img/42/57018/w960_57018-1853.png)
EC-478
[VQ35DE]
DTC P0603 ECM POWER SUPPLY
Revision: 2006 July 2007 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 ProcedureNBS003TM
1. CHECK ECM POWER SUPPLY
1. Turn ignition switch OFF.
2. Check voltage between ECM terminal 121 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. DETECT MALFUNCTIONING PART
Check the following.
Harness connector E211, M41
20A fuse
IPDM E/R harness connector E8
Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
3. CHECK INTERMITTENT INCIDENT
Refer to EC-147, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness or connectors.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
121 R/W Power supply for ECM
(Back-up) [Ignition switch OFF] BATTERY VOLTAGE
(11 - 14V)
Voltage: Battery voltage
MBIB0026E
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![INFINITI FX35 2007 Service Manual DTC P0603 ECM POWER SUPPLY EC-479
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4. PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-II
1. Turn ignition switch INFINITI FX35 2007 Service Manual DTC P0603 ECM POWER SUPPLY EC-479
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4. PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-II
1. Turn ignition switch](/manual-img/42/57018/w960_57018-1854.png)
DTC P0603 ECM POWER SUPPLY EC-479
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4. PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-II
1. Turn ignition switch ON.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.
4. Perform DTC Confirmation Procedure.
See EC-476, "
DTC Confirmation Procedure" .
5. Is the 1st trip DTC P0603 displayed again?
With GST
1. Turn ignition switch ON.
2. Select Service $04 with GST.
3. Perform DTC Confirmation Procedure.
See EC-476, "
DTC Confirmation Procedure" .
4. Is the 1st trip DTC P0603 displayed again?
Ye s o r N o
Ye s > > G O T O 5 .
No >> INSPECTION END
5. REPLACE ECM
1. Replace ECM.
2. Perform initialization of IVIS(NATS) system and registration of all IVIS(NATS) ignition key IDs. Refer to BL-207, "
ECM Re-Communicating Function" .
3. Perform EC-82, "
VIN Registration" .
4. Perform EC-83, "
Accelerator Pedal Released Position Learning" .
5. Perform EC-83, "
Throttle Valve Closed Position Learning" .
6. Perform EC-83, "
Idle Air Volume Learning" .
>> INSPECTION END
Page 1856 of 4366
![INFINITI FX35 2007 Service Manual EC-480
[VQ35DE]
DTC P0605 ECM
Revision: 2006 July 2007 FX35/FX45
DTC P0605 ECMPFP:23710
Component DescriptionNBS003T6
The ECM consists of a microcomputer and connectors for signal
input and output an INFINITI FX35 2007 Service Manual EC-480
[VQ35DE]
DTC P0605 ECM
Revision: 2006 July 2007 FX35/FX45
DTC P0605 ECMPFP:23710
Component DescriptionNBS003T6
The ECM consists of a microcomputer and connectors for signal
input and output an](/manual-img/42/57018/w960_57018-1855.png)
EC-480
[VQ35DE]
DTC P0605 ECM
Revision: 2006 July 2007 FX35/FX45
DTC P0605 ECMPFP:23710
Component DescriptionNBS003T6
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
On Board Diagnosis LogicNBS003T7
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 ProcedureNBS003T8
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 conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
PROCEDURE FOR MALFUNCTION A
With CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. If 1st trip DTC is detected, go to EC-481, "
Diagnostic Procedure"
.
With GST
Follow the procedure “With CONSULT-II” above.
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.
SEF058Y