Mazda 323 1988 Workshop Manual page 220

4A
MONITOR SWITCH FUNCTION
MONITOR SWITCH FUNCTION
The operation of individual switches can be determined by the monitor lamp
SST.
Note
The test connector must be grounded and the ignition switch ON (engine stopped) to check
the switches.
Disconnected terminal
Connected terminal
OXYGEN SENSOR MONITOR FUNCTION
The oxvaen sensor and feedback mode are monitored as follows.
I I
Engine
Condition
Test connector
Item monitored
Function
oxygen SenSor output
oxygen S.enSX output
#anal
more than 0.55v:
Running
Not grounded
Monitor lamp ON
Oxygen sensor output less
than 0.55V:
Monitor lamp OFF
4A-20
323
Revised IO/87