Mitsubishi Eclipse 1990 Service Manual page 446

Scan tool 115
scan tool Power
.
65
[Comment]
Background
Data from the PSP switch allows the PCM to compensate for the additional load put on
the engine during steering maneuvers that require high steering pump pressure.
Range of Check
Vehicle speed: 90 (56 mph)
Set Condition
PSP switch output voltage: High for 30 seconds
Measure at the
Disconnect the connector and measure at the component side.
Measure at the switch connector
Disconnect the connector, and measure at the harness side.
Voltage between 1 and ground
(Ignition switch: ON)
OK: Battery positive voltage
OK
Replace the PCM.
ENGINE (NON-TURBO)>
Pressure
N G
TSB Revision
Troubleshooting
Probable
PSP switch failed
Wiring harness and connectors failed
t h e P S P
Check the harness wire between the
connector.
O K
Replace "the PCM.
,
and the PSP switch