Mazda 1990 323 Workshop Manual Supplement page 250

K2
TROUBLESHOOTING GUIDE
TEP INSPECTION ACTION
9 Check if resistance of solenoid valves is OK Yes Check for poor connection at
w page K2-143 connectors
Resistance: 13-273
* If OK, go to next step
4 If not OK, repair wiring
No Replace solenoid valve
10 Disconnect 20-pin connector of EC-AT control
Yes
Try known good EC-AT control unit and
unit
go to next step
Apply 12V to 2E, 2G, and 21 terminals and
check if operation sound (clicking) of solenoid is
heard
No
Replace solenoid valve
11 Check if throttle cable operates smoothly and is
Yes Go to next step
installed correctly
CT page K2-137
No Replace throttle cable
CT page K2-137
12 Check if line pressure at idle is OK
Yes Go to next step
CT page K2-139
Line pressure:
402-422 kPa (4.1-4.3 kg/cm2, 58-61
psi)
No
Adjust throttle cable
CT page K2-139
K2-74