Mitsubishi Eclipse 1990 Service Manual page 760

ENGINE AND EMISSION CONTROL
INSPECTION PROCEDURE: FOR DIAGNOSTIC TROUBLE CODES
Code Auto-cruise vacuum pump drive system
[Comment]
This diagnostic trouble code is output if the release valve, control valve and motor drive signals
from the auto-cruise vacuum pump are not input to the auto-cruise control-ECU.
(Refer to
Measure at auto-cruise vacuum pump
connector
sure at the harness side.
Voltage between terminal
ground
OK: Battery positive voltage
OK
Measure at control-ECU
connector
Disconnect the connector and mea-
sure at the harness side.
Voltage between terminal (12) and
ground (for driving release valve)
Voltage between terminal (13) and
ground (for driving control valve)
Voltage between terminal (26) and
ground (for driving motor)
OK: Battery positive voltage
following
OK
Check trouble symptom.
NG
Replace the control-ECU.
Stop light switch check
(Refer to
and
auto-cruise control main switch and
auto-cruise vacuum pump. Repair, if
and
Check trouble symptom.
Check the
auto-cruise
auto-cruise control-ECU. Repair, if
necessary.
TSB Revision
Auto-cruise
Malfunction of the auto-cruise vacuum pump
Malfunction of the auto-cruise control-ECU
I
NG
OK
between the
vacuum pump and