Mazda 1990 323 Workshop Manual Supplement page 287

SELF-DIAGNOSIS FUNCTION
CODE No.55 PULSE GENERATOR
INSPECTION ACTION
Are there any poor connections in pulse genera-
Yes Repair connector and/or wiring
tor circuit?
No Go to next step
Does EC-AT Tester display drum speed?
Yes Pulse generator OK
Cancel memory of code number or replace EC-AT control
unit
Is resistance of pulse generator OK?
Resistance: 200--4OOfl
No Go to next step
Yes
Check for open or short circuit in wiring from pulse
generator to EC-AT control unit
No
Replace pulse generator
03UOK2-057
Circuit Diaaram
K2-111