Mazda 1990 323 Workshop Manual Supplement page 218

TROUBLESHOOTING GUIDE
iTEP
INSPECTION
ACTION
3 Check if '00' is displayed on EC-AT Tester with
Yes
ignition switch ON
Go to next step
IIT page K2-106
No
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 2Q and 2s of EC-AT control unit
Voltage:
Approx. 12V (Ignition switch ON)
"88" flashes
Check wiring between IC terminal of
EC-AT control unit and diagnosis con-
nector
* If OK, replace EC-AT control unit
+ If not OK, repair wiring
4
Connect EC-AT Tester to EC-AT control unit
Yes
Check if all output and input component indica-
Go to Steps 6, 11, 13, 16, 19, 20 and
tions are correct (Especially hold switch, solenoid
21 in sequence
valves, throttle sensor voltage, and drum speed)
No No indication at all lamps
* Go to next step
Individual lamp(s) does not illuminate
d Check for cause
5
Check if voltage at 2Q and 2s terminals of EC-
Yes Go to next step
AT control unit is OK
CT page K2-144
Voltage: Approx. 12V (Ignition switch ON)
2s 2Q
No Repair wiring
6 Disconnect solenoid valve connector and check
Yes
Go to next step
if vehicle is driven as follows:
R range: Reverse
D and S ranges: 3rd
L range: 1st
Note
#Engine rpm at 40 km/h (25 mph)
1st gear: 3,950 rpm
3rd gear: 1,400 rpm
No
Overhaul transaxle and repair or
replace any faulty parts
CT page K2-152
K2-42