Mitsubishi 1989-1993 GALANT Service Manual page 1151

SERVICE BRAKES - Anti-lock Braking System Troubleshooting
When diagnostic trouble code "22 STOP SW" is displayed
[Explanation]
The ABS ECU outputs this diagnostic trouble code
the following cases.
in
l Stop light switch may remain on for more than
15 minutes without the ABS functions.
l The harness wire for the stop light switch may
be open.
SUB FUSIBLE
LINK @
Do the stop lights light up
and go out normally?
connector and inspect at
the harness side connec-
W h e n t h e b r a k e p e d a l i s _
pressed forcefully, does the
voltage between connector
terminal No. 29 and ground
indicate battery voltage?
Malfunction of ABS ECU
ABS
ECU
TSB Revision
[Hint]
If the stop light operates normal, the ABS
wire for the stop light switch input circuit to the ECU
is broken or there is a malfunction in the ABS ECU.
Yes
No
Yes
harness
lated circuit and repair
problem spots.
Harness wire between
stop light switch and ABS
ECU is broken.
Repair harness.
Replace ABS ECU.
I