Mitsubishi Eclipse 1990 Service Manual page 761

ENGINE AND EMISSION CONTROL
Code 2 Vehicle speed signal system
[Comment]
This diagnostic trouble code is output if the vehicle speed signals from the vehicle speed sensor
are not input to the auto-cruise control-ECU when the vehicle speed is 40 km/h (25 mph)
or more.
Check the vehicle speed sen
(Refer to GROUP 54 Combination Meter.)
Measure at the vehicle speed sensor connector
Disconnect the connector, and measure at the
harness side.
1. Voltage between 1 and ground
(Ignition switch: ON)
System voltage
2. Voltage between 3 and ground
(Ignition switch: ON)
OK: 4.6 5.2
3. Continuity between 2 and ground
OK: Continuity
OK
Check the following
OK NG
Check trouble symptom.
NG
Check the harness between the auto-cruise
ECU and the vehicle soeed sensor connector.
OK NG
Replace the auto-cruise control-ECU.
Code Autocruise vacuum pump power supply system
[Comment]
This code will be output when the drive signals for the auto-cruise vacuum pump release valve,
control valve and motor are not input to the auto-cruise control-ECU.
at the auto-cruise vacuum
Disconnect the connector and
Voltage between terminal (1) and
OK
and
1. NG
Check the following connector.
Check trouble symptom.
2. NG
Check the harness between the
and ignition switch connector
3. NG
Check the ignition switch.
(Refer to GROUP 54
Check the harness between the vehicle speed sensor
and the ground. Repair, if necessary.
Replace the auto-cruise control-ECU.
TSB Revision
Auto-cruise Control'
Malfunction of the vehicle
of
Malfunction of the harness
Malfunction of the auto-cruise
O K
NG
speed sensor
OK
, ,
Probable cause
the stop light
Malfunction of the connector
of the auto-cruise
NG
Check the harness between the
cruise vacuum pump and the
cruise control-ECU.
connector
NG