System - Mazda 323 1988 Workshop Manual

EVAPORATIVE EMISSION CONTROL SYSTEM
4B
EVAPORATIVE EMISSION CONTROL SYSTEM
Engine control unit
The evaporative emission control system is controlled by signal from the water therm0 sensor, the
intake air therm0 sensor, the air flow meter, and the engine speed sensor (ignition coil). The control
unit determines the engine operating conditions from the signals, and control the evaporative emis-
sion control system by operating the solenoid valves for No. 1 purge control valve and vacuum switch
valve when specified conditions exist.
TROUBLESHOOTING CHART
SYMPTOM
Checking order
5-3s 4&#240-7s 40-76 4849
42-7#42-##/42-##b2-i
11 10 9 3 4
1 2 7 5 6 6
323 Revised
10187 48-67