Infiniti G37 Coupe. Manual — part 458
INSPECTION AND ADJUSTMENT
EC-13
< BASIC INSPECTION >
[VQ37VHR]
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INSPECTION AND ADJUSTMENT
BASIC INSPECTION
BASIC INSPECTION : Special Repair Requirement
INFOID:0000000001733908
1.
INSPECTION START
1.
Check service records for any recent repairs that may indicate a related malfunction, or a current need for
scheduled maintenance.
2.
Open engine hood and check the following:
-
Harness connectors for improper connections
-
Wiring harness for improper connections, pinches and cut
-
Vacuum hoses for splits, kinks and improper connections
-
Hoses and ducts for leaks
-
Air cleaner clogging
-
Gasket
3.
Confirm that electrical or mechanical loads are not applied.
-
Headlamp switch is OFF.
-
Air conditioner switch is OFF.
-
Rear window defogger switch is OFF.
-
Steering wheel is in the straight-ahead position, etc.
4.
Start engine and warm it up until engine coolant temperature
indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.
5.
Run engine at about 2,000 rpm for about 2 minutes under no
load.
6.
Make sure that no DTC is displayed with CONSULT-III or GST.
Is any DTC detected?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnosis Procedure.
>> GO TO 3
3.
CHECK TARGET IDLE SPEED
1.
Run engine at about 2,000 rpm for about 2 minutes under no load.
SEF983U
SEF976U
SEF977U
EC-14
< BASIC INSPECTION >
[VQ37VHR]
INSPECTION AND ADJUSTMENT
2.
Rev engine (2,000 to 3,000 rpm) two or three times under no
load, then run engine at idle speed for about 1 minute.
3.
Check idle speed.
For procedure, refer to
EC-17, "IDLE SPEED : Special Repair
.
For specification, refer to
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> GO TO 4.
4.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1.
Stop engine.
2.
Perform
EC-18, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-
>> GO TO 5.
5.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform
EC-18, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 6.
6.
PERFORM IDLE AIR VOLUME LEARNING
Perform
EC-19, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
Is Idle Air Volume Learning carried out successfully?
YES
>> GO TO 7.
NO
>> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.
7.
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-17, "IDLE SPEED : Special Repair Requirement"
For specification, refer to
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> GO TO 8.
8.
DETECT MALFUNCTIONING PART
Check the Following.
• Check camshaft position sensor (PHASE) and circuit. Refer to
EC-271, "Component Inspection"
.
• Check crankshaft position sensor (POS) and circuit. Refer to
EC-267, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair or replace. Then GO TO 4.
9.
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
SEC-8, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"
.
>> GO TO 4.
10.
CHECK IGNITION TIMING
1.
Run engine at idle.
PBIA8513J
INSPECTION AND ADJUSTMENT
EC-15
< BASIC INSPECTION >
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2.
Check ignition timing with a timing light.
For procedure, refer to
EC-17, "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-18, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-
.
>> GO TO 12.
12.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform
EC-18, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 13.
13.
PERFORM IDLE AIR VOLUME LEARNING
Perform
EC-19, "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-17, "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.
For procedure, refer to
EC-17, "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-49, "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
EC-16
< BASIC INSPECTION >
[VQ37VHR]
INSPECTION AND ADJUSTMENT
17.
DETECT MALFUNCTIONING PART
Check the following.
• Check camshaft position sensor (PHASE) and circuit. Refer to
EC-271, "Component Inspection"
.
• Check crankshaft position sensor (POS) and circuit. Refer to
EC-267, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 18.
NO
>> Repair or replace. 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
SEC-8, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"
.
>> GO TO 4.
19.
INSPECTION END
If ECM is replaced during this BASIC INSPECTION procedure, go to
EC-16, "ADDITIONAL SERVICE WHEN
REPLACING CONTROL UNIT (ECM) : Special Repair Requirement"
>> INSPECTION END
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ECM)
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ECM) : Description
INFOID:0000000001733909
When replacing ECM, this procedure must be performed.
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ECM) : Special Repair
Requirement
INFOID:0000000001733910
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-18, "VIN REGISTRATION : Special Repair Requirement"
.
>> GO TO 3.
3.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
Refer to
EC-18, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Requirement"
.
>> GO TO 4.
4.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-18, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 5.
5.
PERFORM IDLE AIR VOLUME LEARNING
EC-19, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
.
>> END
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