Mitsubishi 3000GT Service Manual page 483

ENGINE AND EMISSION CONTROL
11 Inspection of circuits associated with overdrive cancel <A/T>
DESCRIPTION OF OPERATION
On a vehicle with cruise control, the OD switch
ON signal is input through the cruise control unit
to the ELC-4A/T control unit.
When the vehicle speed control is in the overdrive
mode, if the actual vehicle speed falls more than
about 7 km/h (4 mph) below the set vehicle speed
TROUBLESHOOTING HINTS
ECU terminal voltage
Terminal Signal name
No.
3 OD signal control power supply
10 control unit
I
or the RESUME switch is turned ON, the cruise
control unit forces transistor Tr, into the OFF state.
This cancels the overdrive mode because no OD
switch ON signal is input to the ELC-4A/T control
unit.
Condition
When ignition switch is ON
When overdrive mode is active
I
When overdrive mode is inactive
TSB Revision
3
CRUISE
CONTROL
Battery positive voltage
Battery positive voltage
0 V
I ov
17-23
Terminal
voltage
I
I
I