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SEF605X
SEF709Y
SEF708Y
Engine Fuel & Emission Control System (Cont'd)
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Special Service ToolsNLEC0007
Tool number
Tool nameDescription
KV10117100
Heated oxygen sensor
wrench
NT379
Loosening or tightening heated oxygen sensor 1
(front) with 22 mm hexagon nut
KV10114400
Heated oxygen sensor
wrench
NT636
Loosening or tightening heated oxygen sensor 2
(rear)
a: 22 mm
Commercial Service ToolsNLEC0008
Tool name Description
Fuel filler cap adapter
NT653
Checking fuel tank vacuum relief valve opening
pressure
Oxygen sensor thread
cleaner
NT778
Reconditioning the exhaust system threads before
installing a new oxygen sensor. Use with anti-
seize lubricant shown below.
a: 18 mm dia. with pitch 1.5 mm, for Zirconia
Oxygen Sensor
b: 12 mm dia. with pitch 1.25 mm, for Titania
Oxygen Sensor
Anti-seize lubricant (Per-
matex
TM133AR or
equivalent meeting MIL
specification MIL-A-907)
NT779
Lubricating oxygen sensor thread cleaning tool
when reconditioning exhaust system threads.
PREPARATIONQG18DE
Special Service Tools
EC-25
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Engine Control Component Parts LocationNLEC0009For more details for ECM location, refer to ªELECTRICAL UNIT LOCATIONº in EL section.
NEF310A
ENGINE AND EMISSION CONTROL OVERALL SYSTEMQG18DE
Engine Control Component Parts Location
EC-26
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NEF311A
ENGINE AND EMISSION CONTROL OVERALL SYSTEMQG18DE
Engine Control Component Parts Location (Cont'd)
EC-27
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NEF312A
ENGINE AND EMISSION CONTROL OVERALL SYSTEMQG18DE
Engine Control Component Parts Location (Cont'd)
EC-28
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SEF599Y
ENGINE AND EMISSION CONTROL OVERALL SYSTEMQG18DE
Engine Control Component Parts Location (Cont'd)
EC-29
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Circuit DiagramNLEC0010MODELS WITH THROTTLE POSITION SWITCH AND SWIRL CONTROL VALVENLEC0010S01
YEC649
ENGINE AND EMISSION CONTROL OVERALL SYSTEMQG18DE
Circuit Diagram
EC-30
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MODELS WITHOUT THROTTLE POSITION SWITCH AND SWIRL CONTROL VALVENLEC0010S02
YEC871
ENGINE AND EMISSION CONTROL OVERALL SYSTEMQG18DE
Circuit Diagram (Cont'd)
EC-31