Mazda 626 MX-6 Workshop Manual page 321

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c
\
e n g in e c o n d it io n s
OUTPUT DEVICES
INJECTION
INJEC­
TOR
INJECTION
TIMING
AIR VALVE
BAC
VALVE
ISC VALVE
SOLENOID VALVE
(EGR Vent side)
SOLENOID VALVE
(EGR Vacuum side)
SOLENOID VALVE
(PURGE)
SOLENOID VALVE
(PRESSURE REGULA­
TOR CONTROL)
SOLENOID VALVE
(WASTEGATE)
IGNITER
(Ignition timing)
MEDIUM LOAD
WARMING
CRANKING
UP
(COLD
(DURING
ENGINE)
IDLE)
COLD
\
Rich
1 group
2 group (once per two revolutions)
(once per
revolution)
Open*
Large Large
amount of amount of
bypass air*
bypass air
OFF (Duty value 0%)
(Atmospheric pressure to EGR valve)
OFF (No vacuum to EGR valve)
OFF (2nd stage not operated)
OFF (Vacuum to pressure regulator)
OFF (Boost pressure
ON (Duty value 100%)
not released)
Fixed at Advanced: depends
BTDC 6° on engine condition
c
HEAVY DECEL­
ACCEL­
LOAD ERATION
ERATION
WARM
Rich and
Rich
lean
Fuel cut
Close
Small amount of bypass air
OFF (Duty value 0%)
(Atmospheric pressure to EGR valve)
Operate
[Duty values (EGR
amount) change*]
OFF (No vacuum to EGR valve)
ON (2nd stage operates)
ON (Duty value changes)* OFF (Boost pressure
(Boost pressure controlled'
Retarded: depends on
intensity of knocking
IDLE
IGN:
(THROT­
ON
TLE
REMARKS
(ENGINE
VALVE
NOT
FULLY
RUNNING)
CLOSED)
Rich and
lean
No injection
2 group
Above 6,300 rpm:
(once per two
revolutions)
'Coolant temp:
below 50°C (122°F)
*ln extremly cold
No bypass
condition
Does not ' Depends on engine
operate condition
OFF (2nd
stage not OFF controlled by water
operated) thermo valve
After
'During hot
starting: ON* OFF
(Vacuum cut)
' When knocking
OFF
not released)
Advanced:
depends on
engine speed
o
c
TJ
C
O
(D
<
o '
C D
(0
0)
3
a
m
3
to
5'
(D
o
o
3
a
fuel cut
5'
3
CO
O
o
1st stage:
3)
O
I "
0)
start only
-<
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H
m
occurs
CD