Mitsubishi Eclipse 1990 Service Manual page 478

INSPECTION PROCEDURE 23
Power supply system and ignition
[Comment]
When an ignition switch turns ON, battery positive voltage is supplied to the PCM.
Measure at the PCM connectors
Disconnect the connector and
side
1. Voltage between 6 and ground (Ignition switch: ON)
OK: Battery positive voltage (when the terminal 67 is
grounded)
2. Continuity between 47. 50 and ground
OK: Continuity
3. Voltage between 20 and ground
OK: Battery positive voltage
Check trouble symptoms.
N
the PCM.
INSPECTION PROCEDURE 24
Fuel pump system
[Comment]
The PCM turns the fuel pump relay ON when the engine is cranking or running, and this supplies
power to drive the fuel pump.
Check the fuel pump operation.
Disconnect the fuel pump relay connector.
Use a jumper wire to apply battery positive voltage to
the relay connector (2).
OK: Fuel pump activates.
Check the fuel pump relay.
OK
Check the fuel pump drive control circuit.
(Refer to INSPECTION PROCEDURE 37.)
NG
at the
measure harness
NG
G
,
NG
NG
TSB
. .
.
Malfunction
Improper connector contact, open
short-circuited harness
Disconnected
Malfunction of the
Check trouble symptoms.
NG
Check the'
connector. Repair, if necessary.
Check the harness wire
Malfunction of the fuel pump relay
Malfunction of the
short-circuited harness wire
Malfunction of the PCM
Check the
(Refer to INSPECTION PROCEDURE
Replace
, ,
,
or
ground wire
and
.
ground. if necessary.
o r