Mazda 1990 323 Workshop Manual Supplement page 212

K2
TROUBLESHOOTING GUIDE
4
5
6
7
-
INSPECTION
Connect EC-AT Tester to EC-AT control unit
Check if all output and input component indica-
tions are correct
(Especially hold switch, solenoid valves, throttle
sensor voltage, and drum speed)
Check if voltage at 2Q and 2S terminals of
EC-AT control unit is OK
w page K2-144
Voltage: Approx. 12V (Ignition switch ON)
2s 2Q
Disconnect solenoid valve connector and check
if vehicle is driven as follows:
R range: Reverse
D and S ranges: 3rd
L range: 1st
Note
l
Engine rpm at 40 km/h (25 mph)
1st gear: 3,950 rpm
3rd gear: 1,400 rpm
Check if voltage at 2E, 2G, or 21 terminals of
EC-AT control unit is OK
w page K2-144
Voltage:
Approx. 12V (When solenoid valve ON)
21 2G2E
b4I
Yes
No
Yes
No
Yes
No
Yes
No
-r
ACTION
30 to Steps 6, 12, 14, 17, 20, 21 and
22 in sequence
No indication at all lamps
3 Go to next step
Individual lamp(s) does not illuminate
3 Check for cause
So to next step
Repair wiring
Go to next step
Overhaul transaxle and repair or
replace any faulty parts
w page K2-152
Go to Step 9
So to next step
Y'
-
K2-36