Mazda 323 1988 Workshop Manual page 223

MONITOR SWITCH FUNCTION
4A
Headlight switch
PC:
l
E/L control unit malfunction
(Refer to page 4A-64)
lamp illuminates
l
Headlight switch malfunction
(Refer to Section 15)
. Open circuit in wiring harness from headlight
switch to E/L control unit
l
Engine control unit (1 I) terminal malfunction
Headlight switch is OK
Turn OFF headlioht switch
Rear defroster switch
Turn ON defroster switch, and check that monitor
NO
lamp illuminates
I-
YES
Rear defroster switch is OK
Turn OFF tear defroster switch
Inhibitor switch
Check that monitor iamp illuminates.
YES
PC:
l
E/L control unit malfunction (Refer to page
4A-64)
l
Rear defroster switch malfunction (Refer to
Section 15)
l
Open circuit in wiring harness from rear
defroster switch to E/L control unit
l
Engine control unit (1 I) terminal malfunction
I
PC:
l
Inhibitor switch malfunction
(Refer to page 4A-63)
l
Open or short circuit from inhibitor switch to
engine control unit
l
Engine control unit (30) terminal malfunction
1Refer to oace 4A-62)
Shift into "P" or "N" range
Inhibitor switch is OK
Water therm0 switch circuit (not lnciude switch inspection)
Disconnect water thermo switch connector from wa-
tar thermo switch and check that monitor lamp il.
! PC:
l
E/L control unit malfunction (Refer to page
4A-64)
l
Water thermo switch or relay malfunction (Re-
fer to Section 3A)
l
Open circuit in wiring harness from water
thermo switch to E/L control unit
l
Engine control unit (1H) terminal malfunction
Water thermo switch circuit is OK
Connect the water thermo switch connector
4A-23