Self-Diagnosis Function; Description - Mazda RX-7 1989 Service Highlights

SELF-DIAGNOSIS FUNCTION
DESCRIPTION
Whefl troubles are suspected in the main input devices or output devices. check for the cause with the
SST
Fa1'1ures of 1nd1V1dual input and output devices are indicated and retneved from the control un1t as malfunc-
tion code numbers.
Note
The control unit constantly checks for malfunction of the input devices. It checks for malfunc-
tion of output devices only during a 3-second period after the ignition switch has been turned
ON while the test connector is grounded.
IGNITION
COIL---~~---.'~'
- - - ,
WITH IGNITER
r
(TRAILING SIDE)
M~~~C:'EJ~-.
' ----,
CRANK ANGLE
SENSOR (G-SIGNAL)
KNOCK S E N S O R - 0
\,,{J~
WATER----f7·~
THERMOSENSOR
~;~
'0
AIRFLOW~
METER
INTAKEAIR
~
THERMOSENSOR
(AFM)
~
7
INTAKE AIR - -
THERMOSENSOR -
(ENGINE)
~l~~~~:~;L ~
THROTTLE~-
(~~~~~~-RANGE)
Q._"__
-~-
PRESSURE--- -~
SENSOR
OXYGEN S E N S O R - \
METERING
OIL--~
- - - - - '
PUMP POSITION
SENSOR
DETECTION
OF
MALFUNCTION
ATMOSPHERIC
PRESSURE
SENSOR
FAIL-SAFE
FUNCTION
WARNING
FUNCTION
&
MALFUNCTION
CODE
FUNCTION
TEST CONNECTOR
(GREEN: 1-PIN)
F2-22
_j_
-
-
-=-
97UQF2 024