2001 NISSAN PICK-UP Repair Manual

7. Using the hexagon wrench (face to face: 6 mm, long-type)
(SST), tighten the sprocket mounting bolt.
+When the washer of the fuel injection pump sprocket is
removed, install it with the marking ªFº (front) facing the front
of the engine.
8. Pull out the positioning stopper pin (SST).
9. Install the secondary timing chain.
+Align the alignment marks of the sprockets and those of the
chain, then install it.
+The figure shows the installation state and names of the
secondary timing chain and other related parts.
10. Install timing chain tension guide.
+The upper installation bolt is longer than the lower.
11. Using a hexagon wrench (face to face: 6 mm, short-type)
(SST), install the timing chain slack guide.
12. Install the chain tensioner.
a. Push the plunger of the chain tensioner, then hold it with a
tool such as a push pin, and install it.
b. Using a hexagon wrench (face to face: 5 mm) (SST), tighten
the mounting bolts.
+Installation is possible by a multi-purpose tool also.
c. Pull out the tool such as a push pin which holds the plunger.
+Make sure that the alignment marks of the sprockets and
timing chain are aligned.
JEF360Y
JEF368Y
JEF356Y
JEF355Y
BASIC SERVICE PROCEDUREYD25DDTi
Electronic Control Fuel Injection Pump
(Cont'd)
EC-3424

13. Install the front chain case.
a. Install the tension guide to the back side of the front chain
case.
+If the front chain case is tilted, the tension guide may fall off.
Therefore, when installing the front chain case, hold it verti-
cally.
b. Apply Three Bond 1207C (KP510 00150) to both ends of the
arch area of the oil pump (contact surface of rear chain case)
as shown in the figure.
c. Install the front chain case.
+Align the dowel pin of the oil pump case to the pin hole, then
install it.
+Install bolts 6, 10, and 11 (shown in the figure) with the rub-
ber washer to the front chain case.
d. Tighten the mounting bolts in the numerical order shown in
the figure.
e. After all bolts are tightened, tighten the mounting bolts in the
numerical order shown in the figure again.
14. Install the fuel injection pump rear bracket.
+Tighten all the bolts temporarily, then tighten them securely
with the mounting face securely contacting the fuel injection
pump and the pump bracket.
15. Connect the fuel injection pump harness connector.
+Insert the harness connector securely until the stopper locks.
+Push the connector half way first, then press the stopper until
it locks, so that the connector is connected together.
16. Connect the fuel hoses.
+When the hoses are disconnected at the fuel gallery side,
insert until the hoses contact the valve, then install the clamp
securely.
17. Install other parts in the reverse order of removal.
JEF369Y
JEF370Y
JEF352Y
JEF351Y
BASIC SERVICE PROCEDUREYD25DDTi
Electronic Control Fuel Injection Pump
(Cont'd)
EC-3425

Air Bleeding
Pump the priming pump to bleed air.
+When air is bled completely, the pumping of the priming
pump suddenly becomes heavy. Stop operation at that
time.
+If it is difficult to bleed air by the pumping of the prim-
ing pump (the pumping of the priming pump does not
become heavy), disconnect the fuel supply hose
between the fuel filter and the injection pump. Then, per-
form the operation described above, and make sure that
fuel comes out. (Use a pan, etc. so as not to spill fuel.
Do not let fuel get on engine and other parts.) After that,
connect the hose, and then bleed air again.
+Start engine and let it idle for at least one minute after
performing air bleeding.
Water Draining
EXCEPT FOR EUROPE
+If the MIL illuminates or blinks during the engine operation,
drain the water as follows.
1. Loosen drain cock and drain water.
Loosening drain cock four to five turns causes water to
start draining.
Do not remove drain cock by loosening it excessively.
If water does not drain properly, move the priming up and
down.
Water amount when the MIL blinks:
90 - 150 m!(3.2 - 5.3 Imp fl oz)
CAUTION:
When the water is drained, the fuel is also drained. Use a
pan, etc. to avoid fuel adherence to the rubber parts such as
the engine mount insulator.
Do not over-tighten the water draining cock. This will dam-
age the cock thread, resulting in water or fuel leak.
2. Bleed air of the fuel filter. Refer to EC-3426.
3. Start the engine, then check that the MIL goes off.
FOR EUROPE
1. Loosen drain cock and drain water.
Loosening drain cock four to five turns causes water to
start draining.
Do not remove drain cock by loosening it excessively.
If water does not drain properly, move the priming handle up
and down.
CAUTION:
When the water is drained, the fuel is also drains. Use a pan,
etc. to avoid fuel adherence to rubber parts such as the
engine mount insulator.
Do not over-tighten the water drain cock. This will damage
the cock thread, resulting in water or fuel leak.
SMA825B
BASIC SERVICE PROCEDUREYD25DDTi
EC-3426

2. Bleed air of the fuel filter. Refer to EC-3426.
Accelerator Position Sensor Idle Position
Learning
DESCRIPTION
ªAccelerator Position Sensor Idle Position Learningº is an opera-
tion to clear the self-learning fully closed accelerator position.
It must be performed each time harness connector of accelera-
tor position sensor or ECM is disconnected.
OPERATION PROCEDURE
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªOFF ACCEL PO SIGº in ªACTIVE TESTº mode with
CONSULT-II.
3. Touch ªCLEARº.
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Let engine idle for 10 minutes.
BASIC SERVICE PROCEDUREYD25DDTi
EC-3427

DTC and MIL Detection Logic
When a malfunction is detected, the malfunction (DTC) is stored in the ECM memory.
The MIL will light up each time the ECM detects malfunction. For diagnostic items causing the MIL to light
up, refer to ªTROUBLE DIAGNOSIS Ð INDEXº, EC-3400.
Diagnostic Trouble Code (DTC)
HOW TO READ DTC
The DTC can be read by the following methods.
Without CONSULT-II
ECM displays the DTC by a set of four digit numbers with MIL illumination in the diagnostic test mode II
(Self-diagnostic results). Example: 0407, 1004, etc.
With CONSULT-II
CONSULT-II displays the DTC in ªSELF-DIAG RESULTSº mode. Examples: ªCRANK POS SEN (TDC)º, etc.
HOW TO ERASE DTC
How to erase DTC (
With CONSULT-II)
1.If the ignition switch stays ªONº after repair work, be sure to turn ignition switch ªOFFº once. Wait at least
5 seconds and then turn it ªONº (engine stopped) again.
2. Touch ªENGINEº.
3. Touch ªSELF-DIAG RESULTSº.
4. Touch ªERASEº. (The DTC in the ECM will be erased.)
The emission related diagnostic information in the ECM can be erased by selecting ªERASEº in the ªSELF-
DIAG RESULTSº mode with CONSULT-II.
How to erase DTC (Without CONSULT-II)
1. If the ignition switch stays ªONº after repair work, be sure to turn ignition switch ªOFFº once. Wait at least
5 seconds and then turn it ªONº (engine stopped) again.
2. Change the diagnostic test mode from Mode II to Mode I by using the data link connector. (See
EC-3432.)
The emission related diagnostic information in the ECM can be erased by changing the diagnostic test mode.
+If the battery is disconnected, the emission-related diagnostic information will be lost after
approx. 24 hours.
SEC944C
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONYD25DDTi
EC-3428

+Erasing the emission-related diagnostic information using CONSULT-II is easier and quicker than
switching the diagnostic test mode using the data link connector.
NATS (Nissan Anti-Theft System)
+If the security indicator lights up with the ignition switch
in the ªONº position or ªNATS MALFUNCTIONº is dis-
played on ªSELF-DIAG RESULTSº screen, perform self-
diagnostic results mode with CONSULT-II using NATS
program card. Refer to ªNATS (Nissan Anti-Theft Sys-
tem)º in EL section.
+Confirm no self-diagnostic results of NATS is displayed
before touching ªERASEº in ªSELF-DIAG RESULTSº
mode with CONSULT-II.
+When replacing ECM, initialization of NATS system and
registration of all NATS ignition key IDs must be carried
out with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle
owner. Regarding the procedures of NATS initialization
and NATS ignition key ID registration, refer to CON-
SULT-II operation manual, NATS.
Malfunction Indicator Lamp (MIL)
DESCRIPTION
The MIL is located on the instrument panel.
1. The MIL will light up when the ignition switch is turned ON
without the engine running. This is a bulb check.
+If the MIL does not light up, refer to EL section (ªWARNING
LAMPS AND CHIMEº) or see EC-3647.
2. When the engine is started, the MIL should go off.
If the MIL remains on, the on board diagnostic system has
detected an engine system malfunction.
Fuel filter switch is equipped except for Europe.
If MIL illuminates or blinks irregularly after starting engine,
water may have accumulated in fuel filter. Drain water from
fuel filter. Refer to EC-3426.
On board diagnostic system function
The on board diagnostic system has the following three func-
tions.
SEF252Z
SAT652J
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONYD25DDTi
Diagnostic Trouble Code (DTC) (Cont'd)
EC-3429

Diagnostic Test Mode KEY and ENG. Status Function Explanation of Function
Mode I Ignition switch in ON
position
Engine stopped
BULB CHECK This function checks the MIL bulb for dam-
age (blown, open circuit, etc.).
If the MIL does not come on, check MIL cir-
cuit. (See EC-3647.)
Engine running
MALFUNCTION
WARNINGThis is a usual driving condition. When ECM
detects a malfunction, the MIL will light up to
inform the driver that a malfunction has been
detected.
Mode II Ignition switch in ON
position
Engine stopped
SELF-DIAGNOSTIC RESULTS This function allows DTCs to be read.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONYD25DDTi
Malfunction Indicator Lamp (MIL) (Cont'd)
EC-3430

HOW TO SWITCH DIAGNOSTIC TEST MODES
*1: EC-3647 *2: EC-3429 *3: EC-3647
SEC945C
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONYD25DDTi
Malfunction Indicator Lamp (MIL) (Cont'd)
EC-3431