Mazda 2002 6 - Page 172

CONTROL SYSTEM
F–48–9
F
4R*
4
VIS control
VIS control
solenoid valve
Engine speed: above 4,500 rpm B+ • Inspect VIS solenoid
valve
(See F–14 VARIABLE
INTAKE-AIR SYSTEM
(VIS) CONTROL
SOLENOID VALVE
INSPECTION (L3))
• Inspect related
harness
Engine speed: below 4,500 rpm Below 1.0
4S —— — ——
4T
Variable tumble
control
Variable tumble
control solenoid
valve
ECT above 63 °C { 145 °F} while
idling.
B+
• Inspect VIS solenoid
valve
(See F–15 VARIABLE
TUMBLE CONTROL
SOLENOID VALVE
INSPECTION)
• Inspect related
harness
ECT below 63 °C {145 °F} and
engine speed below 3,750 rpm
Below 1.0
4U Purge control
Purge solenoid
valve
• Inspect using the wave profile.
(See F–48–10 Inspection Using An
Oscilloscope (Reference).)
• Inspect purge
solenoid valve
(See F–39 PURGE
SOLENOID VALVE
INSPECTION)
• Inspect related
harness
4V*
2
B+ Main relay
Ignition switch OFF Below 1.0 • Inspect battery
• Inspect related
harness
Ignition switch ON B+
4W Fuel injection (#2) Fuel injector No.2
• Inspect using the wave profile.
(See F–48–10 Inspection Using An
Oscilloscope (Reference).)
• Inspect fuel injector
No.2
(See F–31 FUEL
INJECTOR
INSPECTION)
• Inspect related
harness
4X GND GND Under any condition Below 1.0
• Inspect related
harness
4Y*
2
Shift solenoid C
control
Shift solenoid C
• Inspect using the wave profile.
(See F–48–10 Inspection Using An
Oscilloscope (Reference).)
• Inspect shift solenoid
C
• Inspect related
harness
4Z Fuel injection (#1) Fuel injector No.1
• Inspect using the wave profile.
(See F–48–10 Inspection Using An
Oscilloscope (Reference).)
• Inspect fuel injector
No.1
(See F–31 FUEL
INJECTOR
INSPECTION)
• Inspect related
harness
4AA Fuel injection (#4) Fuel injector No.4
• Inspect using the wave profile.
(See F–48–10 Inspection Using An
Oscilloscope (Reference).)
• Inspect fuel injector
No.4
(See F–31 FUEL
INJECTOR
INSPECTION)
• Inspect related
harness
4AB*
2
Shift solenoid A
control
Shift solenoid A
• Inspect using the wave profile.
(See F–48–10 Inspection Using An
Oscilloscope (Reference).)
• Inspect shift solenoid
A
• Inspect related
harness
4AC*
2
Shift solenoid B
control
Shift solenoid B
• Inspect using the wave profile.
(See F–48–10 Inspection Using An
Oscilloscope (Reference).)
• Inspect shift solenoid
B
• Inspect related
harness
Terminal Signal Connected to Test condition
Voltage
(V)
Action