Nissan Xterra. Manual — part 221
EC-10
< PRECAUTION >
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PRECAUTIONS
• Before replacing ECM, perform “ECM Terminals and Refer-
ence Value” inspection and make sure ECM functions prop-
erly. Refer to
EC-67, "ECM Terminal and Reference Value"
• Handle mass air flow sensor carefully to avoid damage.
• Never clean mass air flow sensor with any type of detergent.
• Never disassemble electric throttle control actuator.
• Even a slight leak in the air intake system can cause serious
incidents.
• Never shock or jar the camshaft position sensor (PHASE),
crankshaft position sensor (POS).
• After performing each TROUBLE DIAGNOSIS, perform DTC
Confirmation Procedure or Overall Function Check.
The DTC should not be displayed in the DTC Confirmation
Procedure if the repair is completed. The Overall Function
Check should be a good result if the repair is completed.
• When measuring ECM signals with a circuit tester, never allow
the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.
MEF040D
JSBIA1315ZZ
SEF348N
PRECAUTIONS
EC-11
< PRECAUTION >
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• B1 indicates bank 1, B2 indicates bank 2 as shown in the fig-
ure.
• Never operate fuel pump when there is no fuel in lines.
• Tighten fuel hose clamps to the specified torque.
• Never depress accelerator pedal when starting.
• Immediately after starting, Never rev up engine unnecessarily.
• Never rev up engine just prior to shutdown.
• When installing C.B. ham radio or a mobile phone, be sure to
observe the following as it may adversely affect electronic
control systems depending on installation location.
- Keep the antenna as far as possible from the electronic con-
trol units.
- Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Never let them run parallel for a long distance.
- Adjust the antenna and feeder line so that the standing-wave
radio can be kept smaller.
- Be sure to ground the radio to vehicle body.
SEC893C
BBIA0529E
SEF709Y
SEF708Y
EC-12
< PREPARATION >
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PREPARATION
PREPARATION
PREPARATION
Special Service Tool
INFOID:0000000009483768
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name
Description
EG17650301
(J-33984-A)
Radiator cap tester
adapter
Adapts radiator cap tester to radiator cap and radi-
ator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
(J-44321)
Fuel pressure gauge
kit
Checks fuel pressure
(J-44321-6)
Fuel pressure adapter
Connects fuel pressure gauge to quick connector
type fuel lines.
(J-45488)
Quick connector re-
lease
Removes fuel tube quick connectors in engine
room
S-NT564
LEC642
LBIA0376E
PBIC0198E
PREPARATION
EC-13
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Commercial Service Tool
INFOID:0000000009483769
Tool name
(Kent-Moore No.)
Description
Leak detector
i.e.: (J-41416)
Locates the EVAP leak
EVAP service port
adapter
i.e.: (J-41413-OBD)
Applies positive pressure through EVAP service
port
Fuel filler cap adapter
i.e.: (MLR-8382)
Checks fuel tank vacuum relief valve opening
pressure
Socket wrench
Removes and installs engine coolant temperature
sensor
Oxygen sensor thread
cleaner
i.e.: (J-43897-18)
(J-43897-12)
Reconditions the exhaust system threads before
installing a new oxygen sensor. Use with anti-
seize lubricant shown below.
a: 18 mm diameter with pitch 1.5 mm for Zirco-
nia Oxygen Sensor
b: 12 mm diameter with pitch 1.25 mm for Tita-
nia Oxygen Sensor
Anti-seize lubricant
i.e.: (Permatex
TM
133AR or equivalent
meeting MIL specifica-
tion MIL-A-907)
Lubricates oxygen sensor thread cleaning tool
when reconditioning exhaust system threads.
S-NT703
S-NT704
S-NT815
S-NT705
AEM488
S-NT779
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