Mazda 1990 323 Workshop Manual Supplement page 239

TROUBLESHOOTING GUIDE
KZ
iTEP INSPECTION
ACTION
9
Disconnect 20-pin connector of EC-AT control
Yes
Go to Step 11
unit
Check if resistance between 2J terminal and 2L
terminals of EC-AT control unit is OK
Resistance: 200-4003
No
Go to next step
10
Check if resistance of pulse generator is OK
Yes Check for poor connection at connec-
CT page K2-142
tors and go to next step
1 Resistance: 200-4000
I I
No
Replace pulse generator
"^" II, +n .7,-t\,+ ,.+n*
, I
11 Connect oscilloscope ground terminal to 2L
1 CD
terminal of EC-AT control unit, and oscilloscope
input terminal to 2J terminal of EC-AT control
, .n;+ I I
U" L" I IG*L 3Lq3
12
Disconnect solenoid valve connector and check
if vehicle is driven as follows:
R range: Reverse
D and S ranges: 3rd
L range: 1st
Very low voltage:
Replace pulse generator
Note
*Engine rpm at 40 km/h (25 mph)
1st gear: 3,950 rpm
3rd gear: 1,400 rpm
Check for improper grounding of shield-
wrnng or replace pulse generator
Go to next step
No
Overhaul transaxle and repair or
replace any faulty parts
CT page K2-152
I I
K2-63