Infiniti G35 (V35) Sedan. Manual — part 499
EC-142
< COMPONENT DIAGNOSIS >
[VQ35HR]
P0011, P0021 IVT CONTROL
YES
>> INSPECTION END
NO
>> Replace malfunctioning intake valve timing control solenoid valve.
P0014, P0024 EVT CONTROL
EC-143
< COMPONENT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0014, P0024 EVT CONTROL
DTC Logic
INFOID:0000000000956531
DTC DETECTION LOGIC
NOTE:
• If DTC P0014 or P0024 is displayed with DTC P0078, P0084, P1078 or P1084, first perform trouble
diagnosis for DTC P0078, P0084 or P1078, P1084. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10V and 16V at
idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE-I
With CONSULT-III
1.
Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
2.
Start engine and warm it up to the normal operating temperature.
3.
Maintain the following conditions for at least 6 consecutive seconds.
Hold the accelerator pedal as steady as possible.
CAUTION:
Always drive at a safe speed.
4.
Let engine idle for 10 seconds.
5.
Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT-III” above.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE-II
With CONSULT-III
DTC No.
Trouble diagnosis
name
Detecting condition
Possible cause
P0014
Exhaust valve timing
control performance
(bank 1)
There is a gap between angle of target and
phase-control angle degree.
• Crankshaft position sensor (POS)
• Camshaft position sensor (PHASE)
• Exhaust valve timing control position sensor
• Exhaust valve control magnet retarder
• Accumulation of debris to the signal pick-up
portion of the camshaft
• Timing chain installation
• Exhaust valve timing control pulley assembly
P0024
Exhaust valve timing
control performance
(bank 2)
VHCL SPEED SE
100 - 120 km/h (63 - 75 mph)
ENG SPEED
1,200 - 2,000 rpm (A constant rotation is maintained.)
COOLAN TEMP/S
More than 60
°
C (140
°
F)
B/FUEL SCHDL
More than 7.3 msec
Selector lever
D position (A/T)
5th position (M/T)
EC-144
< COMPONENT DIAGNOSIS >
[VQ35HR]
P0014, P0024 EVT CONTROL
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?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000000956532
1.
CHECK FUNCTION OF EXHAUST VALVE TIMING CONTROL
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “EXH V/T ANGLE” in “ACTIVE TEST” mode with CONSULT-III.
3.
Start engine and keep the engine speed at 2,500 rpm, then touch “START”.
4.
Make sure that the values of “EXH/V TIM B1” and “EXH/V TIM B2” change when touching “UP” or
“DOWN”.
Without CONSULT-III
1.
Start engine and rev engine up above 1,500 rpm.
2.
Read the voltage signal between ECM harness connector and ground with an oscilloscope.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> GO TO 2.
2.
CHECK EXHAUST VALVE TIMING CONTROL MAGNET RETARDER
EC-145, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
REPLACE EXHAUST VALVE TIMING CONTROL MAGNET RETARDER
1.
Replace malfunctioning exhaust valve timing control magnet retarder.
2.
EC-20, "EXHAUST VALVE TIMING CONTROL LEARNING : Special Repair Requirement"
ENG SPEED
1,700 - 2,950 rpm (A constant rotation is maintained.)
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.)
ECM
Ground
Voltage signal
Connector
Terminal
F101
6
[EVT control magnet re-
tarder (bank 1) signal]
Ground
7
[EVT control magnet re-
tarder (bank 2) signal]
JMBIA0034GB
P0014, P0024 EVT CONTROL
EC-145
< COMPONENT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
>> INSPECTION END
4.
CHECK EXHAUST VALVE TIMING CONTROL POSITION SENSOR
EC-350, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace malfunctioning exhaust valve timing control position sensor.
5.
CHECK CRANKSHAFT POSITION SENSOR (POS)
EC-257, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace crankshaft position sensor (POS).
6.
CHECK CAMSHAFT POSITION SENSOR (PHASE)
EC-262, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace malfunctioning camshaft position sensor (PHASE).
7.
CHECK CAMSHAFT (EXH)
Check the following.
• Accumulation of debris to the signal plate of camshaft rear end
• Chipping signal plate of camshaft rear end
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Remove debris and clean the signal plate of camshaft
rear end or replace camshaft.
8.
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-49, "Removal and Installation"
NO
>> GO TO 9.
9.
REPLACE EXHAUST VALVE TIMING CONTROL PULLEY ASSEMBLY
1.
Replace exhaust valve timing control pulley assembly and exhaust valve timing control magnet retarder.
Refer to
EM-49, "Removal and Installation"
EM-65, "Removal and Installation"
2.
EC-20, "EXHAUST VALVE TIMING CONTROL LEARNING : Special Repair Requirement"
>> INSPECTION END
10.
CHECK INTERMITTENT INCIDENT
GI-39, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000000956533
1.
CHECK EXHAUST VALVE TIMING CONTROL MAGNET RETARDER
1.
Turn ignition switch OFF.
2.
Disconnect exhaust valve timing control magnet retarder harness connector.
JMBIA0059ZZ
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