Nissan Terrano r20e. Manual — part 104
8
CHECK IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and let it idle.
2. Select “CKPS
⋅
RPM (TDC)” in “DATA MONITOR” mode with CONSULT-II.
3. Read idle speed.
SEF817Y
750±25 rpm
Without CONSULT-II
1. Start engine and let it idle.
2. Check idle speed.
750±25 rpm
OK or NG
OK
E
INSPECTION END
NG
E
GO TO 9.
TROUBLE DIAGNOSIS — BASIC INSPECTION
ZD30DDTi
Basic Inspection (Cont’d)
EC-53
9
CHECK AIR CLEANER FILTER
Check air cleaner filter for clogging or breaks.
OK or NG
OK
E
GO TO 10.
NG
E
Replace air cleaner filter.
10
CHECK FUEL INJECTION NOZZLE
Check fuel injection nozzle opening pressure. Refer to “Injection pressure test”, EC-26.
OK or NG
OK
E
GO TO 11.
NG
E
Replace fuel injection nozzle assembly.
11
CHECK IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and let it idle.
2. Select “CKPS
⋅
RPM (TDC)” in “DATA MONITOR” mode with CONSULT-II.
3. Read idle speed.
SEF817Y
750±25 rpm
Without CONSULT-II
1. Start engine and let it idle.
2. Check idle speed.
750±25 rpm
OK or NG
OK
E
INSPECTION END
NG
E
GO TO 12.
12
CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to EM section, “MEASUREMENT OF COMPRESSION PRESSURE”.
OK or NG
OK
E
GO TO 13.
NG
E
Follow the instruction of “MEASUREMENT OF COMPRESSION PRESSURE”.
TROUBLE DIAGNOSIS — BASIC INSPECTION
ZD30DDTi
Basic Inspection (Cont’d)
EC-54
13
CHECK IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and let it idle.
2. Select “CKPS
⋅
RPM (TDC)” in “DATA MONITOR” mode with CONSULT-II.
3. Read idle speed.
SEF817Y
750±25 rpm
Without CONSULT-II
1. Start engine and let it idle.
2. Check idle speed.
750±25 rpm
OK or NG
OK
E
INSPECTION END
NG
E
Replace electronic control fuel injection pump.
TROUBLE DIAGNOSIS — BASIC INSPECTION
ZD30DDTi
Basic Inspection (Cont’d)
EC-55
Symptom Matrix Chart
SYSTEM — Basic engine control sys-
tem
SYMPTOM
Reference
page
Feature
of
symptom,
Check
point
HARD/NO
ST
AR
T/REST
AR
T
(EXCP
.
HA)
ENGINE
ST
ALL
HESIT
A
TION/SURGING/FLA
T
SPOT
KNOCK/DET
ONA
TION
LACK
OF
POWER
POOR
ACCELERA
TION
HI
IDLE
LOW
IDLE
NO
ST
AR
T
(with
first
firing)
NO
ST
AR
T
(without
first
firing)
HARD
T
O
ST
AR
T
WHEN
ENGINE
IS
COLD
HARD
T
O
ST
AR
T
WHEN
ENGINE
IS
HOT
A
T
IDLE
DURING
DRIVING
WHEN
DECELERA
TING
Warranty symptom code
AA
AB
AC
AD
AE
AF
Electronic control fuel injection pump
mainframe
4
4
4
4
4
4
4
4
4
5
5
3
4
—
*1
Injection nozzle
3
3
3
3
3
3
3
3
3
4
4
3
*2
Glow system
1
1
1
1
Engine body
3
3
3
3
3
3
3
3
4
4
3
EM section
*3
EGR system
3
3
Air cleaner and ducts
3
3
MA section
*4
1 - 5: The numbers refer to the order of inspection.
(continued on next page)
*1: Fuel injection system malfunction or fuel injection timing control system malfunction may be the cause.
*2: Depends on open-valve pressure and spray pattern.
*3: Caused mainly by insufficient compression pressure.
*4: Symptom varies depending on off-position of air duct, etc.
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ZD30DDTi
EC-56
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