Infiniti G20 (P11). Manual — part 161
INSPECTION PROCEDURE
=NCEC0028S02
1
INSPECTION START
1. Visually check the following:
I
Air cleaner clogging
I
Hoses and ducts for leaks
I
EGR valve operation
I
Electrical connectors
I
Gasket
I
Throttle valve and throttle position sensor operation
2. Start engine and warm it up until engine coolant temperature indicator points to the middle of gauge.
Ensure engine stays below 1,000 rpm.
AEC692
3. Open engine hood and run engine at about 2,000 rpm for about 2 minutes under no-load.
SEF977U
4. Make sure that no DTC is displayed with CONSULT-II or GST.
OK or NG
OK (With CONSULT-II)
©
GO TO 3.
OK (Without CONSULT-
II)
©
GO TO 4.
NG
©
GO TO 2.
2
REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding “Diagnostic Procedure”.
With CONSULT-II
©
GO TO 3.
Without CONSULT-II
©
GO TO 4.
GI
MA
EM
LC
FE
CL
MT
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-55
3
CHECK IGNITION TIMING
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. Select “IGNITION TIMING ADJ” in WORK SUPPORT mode.
4. Touch “START”.
PEF546N
5. Start and rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run at idle speed.
6. Check ignition timing with a timing light.
AEC804
M/T: 15°
±
2° BTDC
A/T: 15°
±
2° BTDC (in “P” or “N” position)
OK or NG
OK
©
GO TO 6.
NG
©
GO TO 5.
BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-56
4
CHECK IGNITION TIMING
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.
SEF978U
3. Turn off engine and disconnect throttle position sensor harness connector.
SEF863X
4. Start and rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run at idle speed.
5. Check ignition timing with a timing light.
AEC804
M/T: 15°
±
2° BTDC
A/T: 15°
±
2° BTDC (in “P” or “N” position)
OK or NG
OK
©
GO TO 6.
NG
©
GO TO 5.
GI
MA
EM
LC
FE
CL
MT
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-57
5
ADJUST IGNITION TIMING
With CONSULT-II
1. Adjust ignition timing to the specified value by turning distributor after loosening bolts which secure distributor.
Without CONSULT-II
1. Adjust ignition timing to the specified value by turning distributor after loosening bolts which secure distributor.
2. Turn off engine and connect throttle position sensor harness connector to throttle position sensor.
SEF837X
With CONSULT-II
©
GO TO 3.
Without CONSULT-II
©
GO TO 4.
6
PERFORM IDLE AIR VOLUME LEARNING
With CONSULT-II
1. Start and rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run it at idle speed.
2. Perform “Idle Air Volume Learning”, EC-65.
Without CONSULT-II
1. Turn off engine and connect throttle position sensor harness connector.
SEF837X
2. Start and rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run it at idle speed.
3. Perform “Idle Air Volume Learning”, EC-65.
©
GO TO 7.
BASIC SERVICE PROCEDURE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-58
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