Infiniti FX35, FX50 (S51). Manual — part 853
P0507 ISC SYSTEM
EC-953
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
C
D
E
F
G
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M
A
EC
N
P
O
2.
CHECK INTAKE AIR LEAKAGE
1.
Start engine and let it idle.
2.
Listen for an intake air leakage after the mass air flow sensor.
Is intake air leakage detected?
YES
>> Discover air leakage location and repair.
NO
>> GO TO 3.
3.
REPLACE ECM
1.
Stop engine.
2.
Replace ECM.
3.
EC-579, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ECM) : Special Repair
.
>> INSPECTION END
EC-954
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
P0524 ENGINE OIL PRESSURE
P0524 ENGINE OIL PRESSURE
DTC Logic
INFOID:0000000005237423
DTC DETECTION LOGIC
NOTE:
If DTC P0524 is displayed with DTC P0075 or P0081, first perform the trouble diagnosis for DTC P0075,
P0081. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING-I
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10 V and 16 V at
idle.
>> GO TO 2.
2.
PRECONDITIONING-II
Check oil level and oil pressure. Refer to
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Go to
.
3.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
1.
Select “DATA MONITOR” mode with CONSULT-III.
2.
Maintain the following conditions for at least 20 consecutive seconds.
CAUTION:
Always drive at a safe speed.
3.
Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT-III” above.
Is 1st trip DTC detected?
DTC No.
Trouble diagnosis name
Detecting condition
Possible cause
P0524
Engine oil pressure too
low
Engine oil pressure is low because
there is a gap between angle of target
and phase-control angle.
• Engine oil pressure or level too low
• Crankshaft position sensor
• Camshaft position sensor
• Intake valve timing control solenoid valve
• Accumulation of debris to the signal pick-up portion
of the camshaft
• Timing chain installation
• Foreign matter caught in the oil groove for intake
valve timing control
ENG SPEED
More than 1,700 rpm
COOLAN TEMP/S
More than 70
°
C (158
°
F)
Selector lever
1st or 2nd position
Driving location uphill
Driving vehicle uphill
(Increased engine load will help maintain the driving
conditions required for this test.)
P0524 ENGINE OIL PRESSURE
EC-955
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
C
D
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YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005237424
1.
CHECK OIL PRESSURE WARNING LAMP
1.
Start engine.
2.
Check oil pressure warning lamp and confirm it is not illumi-
nated.
Is oil pressure warning lamp illuminated?
YES
>> Go to
.
NO
>> GO TO 2.
2.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
EC-767, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace malfunctioning intake valve timing control solenoid valve.
3.
CHECK CRANKSHAFT POSITION SENSOR
EC-876, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace crankshaft position sensor.
4.
CHECK CAMSHAFT POSITION SENSOR
EC-881, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace malfunctioning camshaft position sensor.
5.
CHECK CAMSHAFT (INTAKE)
Check the following.
• Accumulation of debris to the signal plate of camshaft front end
• Chipping signal plate of camshaft front end
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Remove debris and clean the signal plate of camshaft
front end or replace camshaft.
6.
CHECK TIMING CHAIN INSTALLATION
Check service records for any recent repairs that may cause timing chain misaligned.
Are there any service records that may cause timing chain misaligned?
YES
>> Check timing chain installation. Refer to
EM-213, "Disassembly and Assembly"
NO
>> GO TO 7.
7.
CHECK LUBRICATION CIRCUIT
PBIA8559J
JMBIA0962ZZ
EC-956
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
P0524 ENGINE OIL PRESSURE
Perform “Inspection of Camshaft Sprocket (INT) Oil Groove”. Refer to
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Clean lubrication line.
8.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
>> INSPECTION END
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