Infiniti I35 (A33). Manual — part 195
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.
675
±
50 rpm (in P or N position)
SEF058Y
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.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — BASIC INSPECTION
Basic Inspection (Cont’d)
EC-121
6
PERFORM IDLE AIR VOLUME LEARNING
Refer to “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.
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 EC-323.
I
Check crankshaft position sensor (POS) and circuit. Refer to 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 a malfunction, but this is the
rarely the 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.
TROUBLE DIAGNOSIS — BASIC INSPECTION
Basic Inspection (Cont’d)
EC-122
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
©
INSPECTION END
NG
©
GO TO 11.
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
Refer to “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.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — BASIC INSPECTION
Basic Inspection (Cont’d)
EC-123
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
©
INSPECTION END
NG
©
GO TO 16.
16
CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-29, “TIMING CHAIN”.
OK or NG
OK
©
GO TO 17.
NG
©
1. Repair the timing chain installation.
2. GO TO 4.
17
DETECT MALFUNCTIONING PART
Check the following.
I
Check camshaft position sensor (PHASE) and circuit. Refer to EC-323.
I
Check crankshaft position sensor (POS) and circuit. Refer to EC-316.
OK or NG
OK
©
GO TO 18.
NG
©
1. Repair or replace.
2. GO TO 4.
18
CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of a malfunction, but this is the
rarely the 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.
TROUBLE DIAGNOSIS — BASIC INSPECTION
Basic Inspection (Cont’d)
EC-124
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