Infiniti I35 (A33). Manual — part 180
INSPECTION PROCEDURE
=NHEC0028S02
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
SEF983U
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.
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5. Run engine at about 2,000 rpm for about 2 minutes under no-load.
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6. Make sure that no DTC is displayed with CONSULT-II or GST.
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 2.
2
REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnostic Procedure.
©
GO TO 3.
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SC
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IDX
BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-61
3
CHECK TARGET IDLE SPEED
With CONSULT-II
1. Run engine at about 2,000 rpm for about 2 minutes under no-load.
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.
SEF978U
3. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
SEF058Y
675
±
50 rpm (in P or N position)
Without CONSULT-II
1. Run engine at about 2,000 rpm for about 2 minutes under no-load.
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.
675
±
50 rpm (in P or N position)
OK or NG
OK
©
GO TO 10.
NG
©
GO TO 4.
4
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform “Accelerator Pedal Released Position Learning”, EC-70.
©
GO TO 5.
5
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform “Throttle Valve Closed Position Learning”, EC-70.
©
GO TO 6.
6
PERFORM IDLE AIR VOLUME LEARNING
Perform “Idle Air Volume Learning”, EC-70.
Is Idle Air Volume Learning carried out successfully?
Yes or No
Yes
©
GO TO 7.
No
©
1. Follow the instruction of Idle Air Volume Learning.
2. GO TO 4.
BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-62
7
CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
675
±
50 rpm (in P or N position)
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
675
±
50 rpm (in P or N position)
OK or NG
OK
©
GO TO 10.
NG
©
GO TO 8.
8
DETECT MALFUNCTIONING PART
Check the following.
I
Check camshaft position sensor (PHASE) and circuit. Refer to ”DTC P0340, P0345 CMP SENSOR (PHASE)”, EC-323.
I
Check crankshaft position sensor (POS) and circuit. Refer to “DTC P0335 CKP SENSOR (POS)”, EC-316.
OK or NG
OK
©
GO TO 9.
NG
©
1. Repair or replace.
2. 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 IVIS (INFINITI
VEHICLE IMMOBILIZER SYSTEM — NATS)”, EC-90.
©
GO TO 4.
10
CHECK IGNITION TIMING
1. Run engine at idle.
2. Check ignition timing with a timing light.
SEC004D
15°
±
5° BTDC (in P or N position)
OK or NG
OK (With CONSULT-II)
©
GO TO 19.
OK (Without CONSULT-
II)
©
GO TO 20.
NG
©
GO TO 11.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-63
11
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform “Accelerator Pedal Released Position Learning”, EC-70.
©
GO TO 12.
12
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform “Throttle Valve Closed Position Learning”, EC-70.
©
GO TO 13.
13
PERFORM IDLE AIR VOLUME LEARNING
Perform “Idle Air Volume Learning”, EC-70.
Is Idle Air Volume Learning carried out successfully?
Yes or No
Yes
©
GO TO 14.
No
©
1. Follow the instruction of Idle Air Volume Learning.
2. GO TO 4.
14
CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
675
±
50 rpm (in P or N position)
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
675
±
50 rpm (in P or N position)
OK or NG
OK
©
GO TO 15.
NG
©
GO TO 17.
15
CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light.
SEC004D
15°
±
5° BTDC (in P or N position)
OK or NG
OK (With CONSULT-II)
©
GO TO 19.
OK (Without CONSULT-
II)
©
GO TO 20.
NG
©
GO TO 16.
BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-64
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