Mazda 1990 323 Workshop Manual Supplement page 229

TROUBLESHOOTING GUIDE
K2
E
I 3
NO LOCKUP
I
IESCRIP-
*No lockup in D range OD
rlON
[TROUBLESHOOTING HINTS]
3 Stoplight switch or circuit shorted
2 Solenoid valve stuck (l-2, 2-3, 3-4, or lockup)
3 Water therm0 signal malfunction
3 Throttle sensor malfunction or misadjusted
3 Pulse generator malfunction
a Hold switch circuit shorted
3 Control valve stuck (Lockup control valve)
I@ Toraue converter worn
at
TEF
-i-
T-
3
draulic circuit clogged or leaking
INSPECTION
Check if "00" is displayed on EC-AT Tester with
ignition switch ON
CT page K2-106
Turn ignition switch ON
Check if malfunction indicator lamp (MIL) is
illuminated
Start engine and let it at idle
Check if malfunction indicator lamp (MIL) goes
3FF
Yes
No
Yes
No
Yes
No
Check for malfunction Code No.
r
ACTION
Go to next step
Malfunction Code No. displayed
Check for cause (Refer to specified
check sequence) CT== page K2-106
No Code No. displayed
Check main relay and voltage of termi-
nals 20 and 25 of EC-AT control unit
Voltage:
Approx. 12V (Ignition switch ON)
"66" flashes
Check wiring between 1C terminal of
EC-AT control unit and diagnosis con-
nector
+ If OK, replace EC-AT control unit
c3 If not OK, repair wiring
Go to Step 4
Check for cause (Refer to
troubleshooting guide) CT= page *F-12
Go to next step
CT page *F-12
* Refer to 1990 323 Workshop Manual (1195-lo-89E).
K2-53