Mazda 1990 323 Workshop Manual Supplement page 235

TROUBLESHOOTING GUIDE
K2
TEP
INSPECTION ACTION
25
Check if resistance of pulse generator is OK Yes Check for poor connection at
CT= page K2-142
connectors and go to next step
Resistance: 200-4OOQ
No
Replace pulse generator
26 Connect oscilloscope ground terminal to 2L Yes Go to next step
terminal of EC-AT control unit, and oscilloscope
input terminal to 2J terminal of EC-AT control
unit
Check if pulse display is OK
No Very low voltage:
Replace pulse generator
Noise in wave form:
Check for improper grounding of shield-
wiring or replace pulse generator
27
Check if engine stall speed is OK Yes Go to next step
w page K2-119
Engine stall speed: 2,550-2,650 rpm
No Check for cause (Refer to Evaluation) LX= page K2-121
K2-59