Mazda 1990 323 Workshop Manual Supplement page 259

TROUBLESHOOTING GUIDE
K2
19 NO MODE CHANGES
IESCRIP-
l
Hold mode cannot be selected or is not canceled when ignition switch turned OFF
'ION
TROUBLESHOOTING HINTS]
j) Hold switch circuit shorted
3 Throttle sensor malfunction or misadjusted
@ Vehicle speed sensor malfunction
3 ATF thermosensor malfunction
@ Pulse generator malfunction
@ Solenoid valves stuck
TEP INSPECTION
ACTION
1 Check if "00" is displayed on EC-AT Tester with
Yes Go to next step
ignition switch ON
CI 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 20 and 2s of EC-AT control unit
Voltage:
Approx. 12 (Ignition switch ON)
"66" flashes
Check wiring between IC terminal of
EC-AT control unit and diagnosis
connector
+ If OK, replace EC-AT control unit
+ If not OK, repair wiring
2 Connect EC-AT Tester to EC-AT control unit Yes Go to Steps 4, 7, 9, 11, 14 and 16 in
Check if all output and input component indica- sequence
tions are correct (Especially hold switch, solenoid
valves, ATF thermosensor, shift signal, throttle
sensor voltage, vehicle speed, and drum speed)
Individual lamp(s) does not illuminate
* Check for cause
Voltage: Approx. 12V (
LT page K2-144
CT- page K2-144
Voltage:
Approx. 12V (Hold switch released)
Go to next step
K2-83