Mazda 323 Workshop Manual Supplement page 154

TROUBLESHOOTING GUIDE
F2
;TEP / t NSPECTION ACTION
4
i Check if throttle valve fully opens when depress- Yes Go to next step
rng accelerator fully
No
Check if accelerator cabte is correctly
Installed *
-a If OK, check throttle body*
c=> If not OK, install accelerator cable
correctly*
5 Check if "00" fs dlsptayed on Self-Diagnosis
Yes Go to next step
Checker with ignition switch ON*
NO Malfunction Code No. displayed
SYSTEM SELECT: 1
Check for cause (Refer to specified
check sequence) *
"88" flashes
Check ECU terminal 1 F voltage
Voltage: Approx. f 2V
(Ignition switch ON)
CT- page F2-60
i~sT SW: SELF TEST
e If OK, replace ECU'
c3 f f not OK, check wiring between
ELECT SW: A
ECU and Self-Diagnosis Checker
6 Check if continuity between throttle sensor termi- Yes Go to next step
nals IDt and E ts as shown'
7
Connect System Selector to diagnosis connector Yes Check if ignition timing advances when
and set Test Switch to "SELF TEST" and check accelerating
for correct ignition timing at idle after warm-up'
e If advances, go to next step
Ignitian timing: BTDC 10 f 1 D
=S If no advance, check ECU terminal
voltages
No Adjust
8
Check of ECU terminal voltages are OK Yes Go to next step
CT page F2-60
No Check for cause
9
Check for correct intake manrfold vacuum at idle Yes Go to next step
intake manifoId vacuum:
! More than 450 mmHg (17.7 inHg)
NO
Check ior air leakage 07 intake air sys-
tem components
* Refer to 323 Workshop Manual [1203-IO-89F (Europe) or 1204-IO-89F (Australia)].
F2-37