Infiniti EX35. Manual — part 568
EC-14
< BASIC INSPECTION >
[VQ35HR]
INSPECTION AND ADJUSTMENT
2.
Check ignition timing with a timing light.
EC-16, "IGNITION TIMING : Special
For specification, refer to
Is the inspection result normal?
YES
>> GO TO 19.
NO
>> GO TO 11.
11.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1.
Stop engine.
2.
Perform
EC-17, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-
>> GO TO 12.
12.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform
EC-17, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 13.
13.
PERFORM IDLE AIR VOLUME LEARNING
Perform
EC-18, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
Is Idle Air Volume Learning carried out successfully?
YES
>> GO TO 14.
NO
>> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.
14.
CHECK TARGET IDLE SPEED AGAIN
1.
Start engine and warm it up to normal operating temperature.
2.
Check idle speed.
For procedure, refer to
EC-16, "IDLE SPEED : Special Repair Requirement"
For specification, refer to
Is the inspection result normal?
YES
>> GO TO 15.
NO
>> GO TO 17.
15.
CHECK IGNITION TIMING AGAIN
1.
Run engine at idle.
2.
Check ignition timing with a timing light.
EC-16, "IGNITION TIMING : Special
For specification, refer to
Is the inspection result normal?
YES
>> GO TO 19.
NO
>> GO TO 16.
16.
CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to
EM-51, "Removal and Installation"
Is the inspection result normal?
YES
>> GO TO 17.
NO
>> Repair the timing chain installation. Then GO TO 4.
A
:Timing indicator
JMBIA0054ZZ
A
:Timing indicator
JMBIA0054ZZ
INSPECTION AND ADJUSTMENT
EC-15
< BASIC INSPECTION >
[VQ35HR]
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17.
DETECT MALFUNCTIONING PART
Check the following.
• Check camshaft position sensor (PHASE) and circuit. Refer to
EC-260, "Component Inspection"
.
• Check crankshaft position sensor (POS) and circuit. Refer to
EC-255, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 18.
NO
>> Repair or replace malfunctioning part. Then GO TO 4.
18.
CHECK ECM FUNCTION
1.
Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2.
Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to .
>> GO TO 4.
19.
INSPECTION END
If ECM is replaced during this BASIC INSPECTION procedure, go to
EC-15, "ADDITIONAL SERVICE WHEN
REPLACING CONTROL UNIT : Special Repair Requirement"
.
>> INSPECTION END
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description
INFOID:0000000003133229
When replacing ECM, this procedure must be performed.
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement
INFOID:0000000003133230
1.
PERFORM INITIALIZATION OF NATS SYSTEM AND REGISTRATION OF ALL NATS IGNITION KEY IDS
SEC-8, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"
>> GO TO 2.
2.
PERFORM VIN REGISTRATION
EC-17, "VIN REGISTRATION : Special Repair Requirement"
.
>> GO TO 3.
3.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
Refer to
EC-17, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Requirement"
.
>> GO TO 4.
4.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-17, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 5.
5.
PERFORM IDLE AIR VOLUME LEARNING
EC-18, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> GO TO 6.
6.
PERFORM EXHAUST VALVE TIMING CONTROL LEARNING
EC-16
< BASIC INSPECTION >
[VQ35HR]
INSPECTION AND ADJUSTMENT
EC-19, "EXHAUST VALVE TIMING CONTROL LEARNING : Special Repair Requirement"
.
>> END
IDLE SPEED
IDLE SPEED : Description
INFOID:0000000003133231
This describes how to check the idle speed. For the actual procedure, follow the instructions in “BASIC
INSPECTION”.
IDLE SPEED : Special Repair Requirement
INFOID:0000000003133232
1.
CHECK IDLE SPEED
With CONSULT-III
Check idle speed in “DATA MONITOR” mode with CONSULT-III.
With GST
Check idle speed with Service $01 of GST.
>> INSPECTION END
IGNITION TIMING
IGNITION TIMING : Description
INFOID:0000000003133233
This describes how to check the ignition timing. For the actual procedure, follow the instructions in “BASIC
INSPECTION”.
IGNITION TIMING : Special Repair Requirement
INFOID:0000000003133234
1.
CHECK IGNITION TIMING
1.
Attach timing light to loop wire as shown.
2.
Check ignition timing.
>> INSPECTION END
VIN REGISTRATION
VIN REGISTRATION : Description
INFOID:0000000003133235
VIN Registration is an operation to registering VIN in ECM. It must be performed each time ECM is replaced.
NOTE:
Accurate VIN which is registered in ECM may be required for Inspection & Maintenance (I/M).
1.
Loop wire
A.
Timing light
B.
Timing indicator
JMBIA0026ZZ
INSPECTION AND ADJUSTMENT
EC-17
< BASIC INSPECTION >
[VQ35HR]
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VIN REGISTRATION : Special Repair Requirement
INFOID:0000000003133236
1.
CHECK VIN
Check the VIN of the vehicle and note it. Refer to
GI-20, "Information About Identification or Model Code"
>> GO TO 2.
2.
PERFORM VIN REGISTRATION
With CONSULT-III
1.
Turn ignition switch ON and engine stopped.
2.
Select “VIN REGISTRATION” in “WORK SUPPORT” mode.
3.
Follow the instruction of CONSULT-III display.
>> END
ACCELERATOR PEDAL RELEASED POSITION LEARNING
ACCELERATOR PEDAL RELEASED POSITION LEARNING : Description
INFOID:0000000003133237
Accelerator Pedal Released Position Learning is a function of ECM to learn the fully released position of the
accelerator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each
time harness connector of accelerator pedal position sensor or ECM is disconnected.
ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Re-
quirement
INFOID:0000000003133238
1.
START
1.
Check that accelerator pedal is fully released.
2.
Turn ignition switch ON and wait at least 2 seconds.
3.
Turn ignition switch OFF and wait at least 10 seconds.
4.
Turn ignition switch ON and wait at least 2 seconds.
5.
Turn ignition switch OFF and wait at least 10 seconds.
>> END
THROTTLE VALVE CLOSED POSITION LEARNING
THROTTLE VALVE CLOSED POSITION LEARNING : Description
INFOID:0000000003133239
Throttle Valve Closed Position Learning is a function of ECM to learn the fully closed position of the throttle
valve by monitoring the throttle position sensor output signal. It must be performed each time harness connec-
tor of electric throttle control actuator or ECM is disconnected.
THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement
INFOID:0000000003133240
1.
START
1.
Check that accelerator pedal is fully released.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
Check that throttle valve moves during above 10 seconds by confirming the operating sound.
>> END
IDLE AIR VOLUME LEARNING
IDLE AIR VOLUME LEARNING : Description
INFOID:0000000003133241
Idle Air Volume Learning is a function of ECM to learn the idle air volume that keeps engine idle speed within
the specific range. It must be performed under any of the following conditions:
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