Mitsubishi Eclipse 1990 Service Manual page 1739

Code No. 22 Stop
[Comment]
The ABS-ECU outputs this diagnostic trouble code in the following cases.
Stop light switch remains on for more than 15 minutes while the ABS is not function-
ing.
The harness wire for the stop light switch may be open.
If the stop light operates normally, there is an open circuit in the harness for the
stop light switch input circuit is broken or there is a malfunction in the ABS-ECU.
Does the stop light illuminate and switch
off
Yes
Disconnect the connector and mea-
sure at the harness side.
Stop light switch ON
Voltage between terminal 29 and body
ground
OK Battery positive voltage
OK
Check the following co
OK
Check trouble symptom.
ABS
switch system
(Refer to GROUP
Stop light switch check (Refer to
GROUP
Check the harness between dedicated
Repair
Replace the ABS-ECU.
TSB Revision
Troubleshooting.
Malfunction of stop light switch
of harness or connector
Malfunction
Brake pedal.)
OK
On-vehicle Service.)
OK
I
'of
,
Replace the light