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6 PERFORM IDLE AIR VOLUME LEARNING
Refer to “Idle Air Volume Learning”, EC-71.
Which is the result CMPLT or INCMP?
CMPLT © GO TO 7.
INCMP © 1. Follow the construction 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.
MT: 625±50 rpm
AT: 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.
MT: 625±50 rpm
AT: 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-337.
I Check crankshaft position sensor (POS) and circuit. Refer to EC-330.
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 NVIS (NATS) system and registration of NVIS (NATS) ignition key IDs. Refer to “NVIS (NISSAN
VEHICLE IMMOBILIZER SYSTEM — NATS)”, EC-92.
© GO TO 4.
10 CHECK IGNITION TIMING
1. Run engine at idle.
2. Check ignition timing with a timing light.
MT: 15°±5° BTDC
AT: 15°±5° BTDC (in “P” or “N” position)
OK or NG
OK © INSPECTION END
NG © GO TO 11.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — BASIC INSPECTION
Basic Inspection (Cont’d)
EC-125
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