Malfunction Code Number - Mazda 121 Workshop Manual

SELF-DIAGNOSIS FUNCTION
PREPAHATION
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MALFUNCTION CODE NUMBEB
Inspectlon Prccedurc
1. Connect the SST to the diagnosis connector.
2. Set switch @ to position 1.
3. Set TEST SW to SELF TEST.
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4. Connect the SST to the System
5. Set the select switch to posilion
Selector and a ground.
6. Turn the ignition switch ON.
7. Verify that "88" llasheson the digitaldisplay and the buzz-
er sounds for 3 sec, after turning the ignition switch ON.
8. ll "88" does notflash, check the main relay (Feter to page
F-124), power supply circuit, and diagnosis connector
wrflng.
9. lf 88 flashes and lhe buzzer sounds continuously for more
than 20 sec., check for a short circuil between the ECU
terminal 1F and the diagnosis connector. Replacethe ECU
if necessary and perform Steps 3 and 7 again.
10. Note any code numbers and checkfor the causes by refer-
ring to the check sequences shown on pages F-70
through F-78. Repair as necessary.
Note
. Cancel the code numbeB by performing the after-
repair procedure following repairs.
(Refer to page F-79.)
43 8019 9AO
System Selector
diagnosis
49 HO18 9A1
Self-Diagnosis
Checker
diagno6is
F-67