Mitsubishi 3000GT 1991 Service Manual page 490

AUTOMATIC TRANSAXLE - Troubleshooting
12. Kickdown
(K/D) servo
switch
13. Transaxle con-
Check for continuity between the
and the transaxle case.
Continuity exists
Start the engine, set to the "L"
range, and let the engine idle;
check for continuity between the
and the transaxle case.
NOTE: Be sure the brakes are
applied during this check.
No continuity
Normal
Disconnect the harness (both A
and B connectors) from the vehi-
cle's TCU. Then connect, via an
intermediate harness for check-
ing, a new TCU to this harness
and make a road test.
Consider the original TCU to be
normal, and again check the sen-
Same problem (as before TCU
exchange) occurs.
TSB Revision
I
Poor contact, or dam-
aged or disconnected
wiring
Replace the K/D servo
switch.
Poor contact (sticking)
Replace the K/D servo
switch.
Install a new TCU.