Mazda 3 Workshop Manual page 908

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
Fuel injector
2E No.1 power
supply
Fuel injector
2F No.2 power
supply
Fuel injector
2G No.3 power
supply
Fuel injection
2H
control
2I -
2J ECT
2K Rear HO2S
Fuel injector
2L No.4 power
supply
2M ESA control
2N EGR control
2O -
2P CKP
2Q ESA control
Downloaded from
Fuel injector Ignition switch is turned to the
No.1 ON position.
Fuel injector Ignition switch is turned to the
No.2 ON position.
Fuel injector Ignition switch is turned to the
No.3 ON position.
Fuel injector (See Inspection Using An Oscilloscope
No.4 (Reference).)
- -
Ignition
switch is
ECT sensor turned to
the ON
position.
Rear HO2S Idle
Fuel injector Ignition switch is turned to the
No.4 ON position.
Ignition coil (See Inspection Using An Oscilloscope
No.4 (Reference).)
EGR valve Idle (EGR control operating)
- -
(See Inspection Using An Oscilloscope
CKP sensor
(Reference).)
Ignition coil (See Inspection Using An Oscilloscope
No.3 (Reference).)
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B+
B+
B+
-
ECT is 20 °C {68
Approx.
°F}
3.0
ECT is 60 °C {140
Approx.
°F}
1.4
ECT is 80 °C {176
Approx.
°F}
0.9
Alternates
between 0
and 1.0
B+
1.0 or less
-
- automotive repair manuals website
• Related wiring
harness
• Related wiring
harness
• Related wiring
harness
• Fuel injector
No.4
• Related wiring
harness
-
• ECT sensor
• Related wiring
harness
• Rear HO2S
• Related wiring
harness
• Related wiring
harness
• Ignition coil
No.4
• Related wiring
harness
• EGR valve
• Related wiring
harness
-
• CKP sensor
• Related wiring
harness
• Ignition coil
No.3