ECU NISSAN PICK-UP 1998 User Guide

Door MirrorCAUTION:
Be careful not to scratch door rearview mirror body.
.For Wiring Diagram, refer to ``POWER DOOR MIRROR'' in EL section.
REMOVAL Ð Door mirror
V1Remove door trim. Refer to ``Door Trim'' for details, BT-18.
V2Remove inner cover from front corner of door.
V3Disconnect door mirror harness connector.
V4Remove bolts securing door mirror, then remove door mirror assembly.
SBT458
MIRROR
BT-39

Precautions
lBefore connecting or disconnecting the ECM harness
connector, turn ignition switch OFF and disconnect
negative battery terminal. Failure to do so may damage
the ECM. Because battery voltage is applied to ECM
even if ignition switch is turned off.
lWhen connecting ECM harness connector, tighten
securing bolt until the gap between the orange indica-
tors disappears.
: 3.0 - 5.0 N´m (0.3 - 0.5 kg-m, 26 - 43 in-lb)
lWhen connecting or disconnecting pin connectors into
or from ECM, take care not to damage pin terminals
(bend or break).
Make sure that there are not any bends or breaks on
ECM pin terminal, when connecting pin connectors.
lBefore replacing ECM, perform ECM input/output signal
inspection and make sure whether ECM functions prop-
erly or not. (See page EC-68.)
lAfter performing each TROUBLE DIAGNOSIS, perform
``OVERALL FUNCTION CHECK'' or ``DTC (Diagnostic
Trouble Code) CONFIRMATION PROCEDURE''.
The DTC should not be displayed in the ``DTC CONFIR-
MATION PROCEDURE'' if the repair is completed. The
``OVERALL FUNCTION CHECK'' should be a good result
if the repair is completed.
SEF289H
SEF308Q
SEF291H
MEF040D
SEF051P
PRECAUTIONS AND PREPARATIONKA
EC-6

VAVB
b
Adjust ignition timing to the specified value by turning dis-
tributor after loosening bolts which secure distributor.
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
10É 2É BTDC
VF
1. Select ``IGNITION TIMING ADJ'' in WORK
SUPPORT mode.
2. Touch ``START''.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1. Stop engine and disconnect throttle position
sensor harness connector.
2. Start engine.
.
Check base idle speed.
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Read idle speed in ``IGN TIMING ADJ'' mode with
CONSULT.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Check idle speed.
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
750 25 rpm
OKNG
Rev engine (2,000 - 3,000 rpm) 2 or 3 times under no
load and run engine at idle speed.
Adjust base idle speed by turning idle speed adjusting
screw.
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
750 25 rpm
c
Touch ``Back''.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1. Stop engine and connect throttle position sen-
sor harness connector.
2. Start engine.
Rev engine (2,000 - 3,000 rpm) 2 or 3 times under no
load and run engine at idle speed.
VC
SMA189AA
SEF546N
SEF147U
SEF913J
SEF602K
.
.
.
.
.
.
.
.
BASIC SERVICE PROCEDUREKA
Idle Speed/Ignition Timing/Idle Mixture Ratio
Adjustment (Cont'd)
EC-27

VAVB
b
Adjust ignition timing to the specified value by turning dis-
tributor after loosening bolts which secure distributor.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
10É 2É BTDC
Check base idle speed.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Read idle speed in ``IGN TIMING ADJ'' mode
with CONSULT.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Check idle speed.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
750 25 rpm
OKNG
Rev engine (2,000 - 3,000 rpm) 2 or 3 times under no-
load and run engine at idle speed.
Adjust base idle speed by turning idle speed adjusting
screw.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
750 25 rpm
c
Touch ``Back''.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------OR------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1. Stop engine and connect throttle position sen-
sor harness connector.
2. Start engine.
Rev engine (2,000 - 3,000 rpm) 2 or 3 times under no-
load and run engine at idle speed.
VC
SMA189AA
SEF546N
SEF147U
SEF913J
SEF602K
.
.
.
.
.
.
.
BASIC SERVICE PROCEDUREKA
Idle Speed/Ignition Timing/Idle Mixture Ratio
Adjustment (Cont'd)
EC-33

7. Remove vacuum pump.
lRemove the eye bolt securing the oil tube. Remove the
vacuum pump. Be careful not to bend the oil tube during
vacuum pump removal.
8. Remove injection pump fixing nuts and bolts.
9. Remove injection pump with injection tubes.
Disconnect injection tube from pump once it is removed.
Installation and Adjustment
1. Confirm that No. 1 piston is set at TDC on its compression
stroke.
SEF063K
SEF064K
MEM125A
DEM024
INJECTION PUMPTD
Removal (Cont'd)
EC-180

2. Install injection pump.
(1) Temporarily set injection pump so that the flange of pump is
aligned with aligning mark on front cover.
(2) Install injection drive gear over the key.
:59-69Nzm (6 - 7 kg-m, 43 - 51 ft-lb)
Coat key with grease to prevent it from falling into the front
cover. Make sure that ``Z'' marks are aligned.
(3) Install drive gear cover while applying a continuous bead of
liquid gasket.
lBe sure liquid gasket is 2.5 to 3.5 mm (0.098 to 0.138 in)
wide.
lAttach timing gear case cover to timing gear case within
5 minutes after coating.
lWait at least 30 minutes before refilling engine oil.
lUse Genuine Liquid Gasket or equivalent.
PLUNGER LIFT ADJUSTMENT
1. Loosen injection pump mounting nuts and mounting bracket
bolt.
2. Remove plug bolt from distributor head and install dial gauge.
3. Plunger lift measurement and adjustment
(1) Turn crankshaft counterclockwise 20 to 25 degrees from No.
1 piston at TDC.
(2) Find dial gauge's needle rest position at step (1) set position,
then set the gauge to zero.
(3) Turn crankshaft clockwise until No. 1 piston is set at TDC.
(4) Read dial gauge indication.
0.71 0.02 mm (0.0280 0.0008 in)
(5) If it is not within the above range, turn pump body until it
comes within standard range.
a. If indication is smaller than the specified value, turn
pump body counterclockwise.
b. If indication is larger than the specified value, turn pump
body clockwise.
4. Tighten injection pump securely.
Injection pump fixing bolt:
:20-25Nzm (2.0 - 2.5 kg-m, 14 - 18 ft-lb)
Injection pump to mounting bracket:
:30-41Nzm (3.1 - 4.2 kg-m, 22 - 30 ft-lb)
SEF337F
SEF626I
SEF065K
INJECTION PUMPTD
Installation and Adjustment (Cont'd)
EC-181

5. Disconnect dial gauge and reinstall plug bolt with new
washer.
:14-20Nzm (1.4 - 2.0 kg-m, 10 - 14 ft-lb)
6. Connect injection tubes.
Flare nut:
:20-25Nzm (2.0 - 2.5 kg-m, 14 - 18 ft-lb)
7. Bleed air from fuel system.
Refer to EC-191.
IDLE AND MAXIMUM SPEED ADJUSTMENT
CAUTION:
lDo not remove sealing wires unless absolutely neces-
sary.
lDisturbing full-load adjusting screw will change fuel flow
characteristics, resulting in an improperly adjusted
engine. Readjustment of fuel injection pump should be
done using a pump tester.
lIf maximum speed adjusting screw is turned in direction
that increases control lever angle, engine damage may
result.
Throttle control wire adjustment
1. Turn idle control knob fully counterclockwise.
2. Make sure that clearance between idle control lever pin and
fuel injection pump control lever is within the specified range.
Clearance:
1-2mm(0.04 - 0.08 in)
3. If not within the specified range, adjust with idle control wire
adjusting nut.
4. After adjusting clearance, tighten lock nut.
Idle adjustment
Refer to ``Checking Idle Speed'', ``ENGINE MAINTENANCE''
in MA section.
Maximum speed adjustment
Maximum speed adjusting screw is retained by sealing wire
and need not be adjusted under normal circumstances.
However, if it becomes necessary to adjust it, the following
procedure should be followed:
1. Start engine and warm it up until coolant temperature indica-
tor points to middle of gauge.
2. Connect tachometer's pick-up to No. 1 fuel injection tube.
To obtain accurate reading of engine rpm, remove clamps
that secure No. 1 fuel injection tube.
SEF852
SEF066K
DEF014
SEF068K
INJECTION PUMPTD
Installation and Adjustment (Cont'd)
EC-182

3. Depress accelerator pedal fully under no load and, at this
point, read the tachometer indication.
Maximum engine speed (Under no load):
5,000
+100
-200rpm
4. If indication is lower than specified maximum engine speed,
turn maximum speed adjusting screw counterclockwise 1 or
2 rotations. Then depress accelerator pedal to floor under no
load and, at this point, read indication.
5. If indication is still lower than specified speed, repeat step 4
above until specified engine speed is reached.
6. After adjustment, tighten lock nut securely.
7. Seal with a sealing wire or install a sealing cap.
Disassembly
Refer to ``VE INJECTION PUMP'' in EF section of Service
Manual for TD series diesel engine (1st Revision).
Load Timer Adjustment
1. After adjusting the timer stroke, find the control lever position
where the injection quantity is as specified and then fix the
control lever using the adjusting device (KV11282617).
2. Run the injection pump at the specified speed and then
adjust the governor shaft installation position so that the timer
stroke is as specified.
Refer to ``Injection Pump Calibration Standard'' in SDS for
the timer stroke.
SEF627I
MEF451B
MEF450B
INJECTION PUMPTD
Installation and Adjustment (Cont'd)
EC-183

After-glow control
1. Turn ignition switch OFF.
2. Leave harness connector joined to glow control unit.
3. Connect test lamp to glow control unit as shown in ``Pre-glow
control''.
4. Turn ignition switch to START and return to ON. Measure
terminal voltage and count the times the test lamp turns on
and off.
1) At coolant temperature below 50ÉC (122ÉF) the battery volt-
age appears intermittently for 15 seconds. Test lamp turns on
and off approx. 3 times.
2) At coolant temperature over 50ÉC (122ÉF) the battery voltage
appears for 2 seconds.
Component Inspection
GLOW PLUG CONNECTING PLATE NUTS
Check that all glow plug connecting plate nuts and harness nut
are installed securely.
GLOW PLUG
Remove glow plug connecting plate and perform continuity test
between each glow plug and cylinder head.
No continuity ... Replace glow plug.
Two manufacturer's ceramic glow plugs are provided on
TD25 engine.
A color mark of orange or blue is put on the glow plug head.
Do not mix them in one engine. Do not use if dropped on the
floor.
GLOW RELAY
The glow relay is normally open.
SEF177U
DEF018
DEF019
SEF680R
QUICK-GLOW SYSTEMTD
Glow Control Unit Circuit Inspection (Except
for Cold Areas) (Cont'd)
EC-208

Brush spring pressure
Check brush spring pressure with brush spring detached from
brush.
Spring pressure (with new brush):
Refer to SDS, EL-33.
lNot within the specified values ... Replace.
Brush holder
1. Perform insulation test between brush holder (positive side)
and its base (negative side).
lContinuity exists. ... Replace.
2. Check brush to see if it moves smoothly.
lIf brush holder is bent, replace it; if sliding surface is dirty,
clean.
YOKE CHECK
Magnet is secured to yoke by bonding agent. Check magnet to
see that it is secured to yoke and for any cracks. Replace mal-
functioning parts as an assembly.
CAUTION:
Do not clamp yoke in a vice or strike it with a hammer.
ARMATURE CHECK
1. Continuity test (between two segments side by side).
lNo continuity ... Replace.
2. Insulation test (between each commutator bar and shaft).
lContinuity exists. ... Replace.
3. Check commutator surface.
lRough ... Sand lightly with No. 500 - 600 emery paper.
SEL015Z
SEL568B
SEL305H
SEL019Z
SEL020Z
STARTING SYSTEM
Inspection (Cont'd)
EL-31