Mitsubishi FUEL User Manual

MPI <4G6> -
Troubleshooting
13A-47
INSPECTION PROCEDURE 3
The engine warning lamp does not illuminate right after
the ignition switch is turned to the ON position.
Probable cause
Because there is a burnt-out bulb, the engine-ECU <M/T> or engine-A/T-ECU <A/T>
causes the engine warning lamp to illuminate for five seconds immediately after the
ignitionswitch isturnedtoON.Iftheenginewarninglampdoesnotilluminateimmediately
after the ignition switch is turned to ON, one of the malfunctions listed at right has
probably occurred.
D
Burnt-out bulb
D
Defective warning lamp circuit
D
Malfunction of the engine-ECU <M/T> or
engine-A/T-ECU <A/T>
OK
Check trouble symptom.
NG
Check the harness wire between combination meter and engine-
ECU <M/T> or engine-A/T-ECU <A/T>, and repair if necessary.
OK
Check the following connectors:
C-36 <M/T>, C-177 <A/T>, C-90, D-03
NG
Repair
NG
Check the engine warning lamp power supply circuit, and repair
if necessary.
OK
Measure at the combination meter connector D-03.
D
Disconnect the connector, and measure at the harness side.
D
Voltage between 4 and earth (Ignition switch: ON)
OK:
System voltage
NG
Check a burnt-out bulb.
NG
Replace
NG
Replace the engine-ECU <M/T> or engine-A/T-ECU <A/T>.
OK
Check trouble symptom.
OK
Check the following
connector:
C-36 <M/T>,
C-177 <A/T>
NG
Repair
OK
Measure at the engine-ECU connector C-36 <M/T> or the
engine-A/T-ECU connector C-117 <A/T>.
D
Disconnect the connector, and measure at the harness side.
D
Earth the terminal No. 36 <M/T> or No. 22 <A/T>.
OK:
The engine warning lamp illuminates.
MUT-
II
Data list
16 engine-ECU power supply voltage (Refer to P.13A-75.)
NG
Check the engine-ECU <M/T> or engine-A/T-ECU <A/T> power
supply and earth circuit.
(Refer to P.13A-68, INSPECTION PROCEDURE 26.)
INSPECTION PROCEDURE 4
The engine warning lamp remains illuminating and never
goes out.
Probable cause
In cases such as the above, the cause is probably that the engine-ECU <M/T> or
engine-A/T-ECU <A/T> is detecting a problem in a sensor or actuator, or that one
of the malfunctions listed at right has occurred.
D
Short-circuit between the engine warning lamp and
engine-ECU <M/T> or engine-A/T-ECU <A/T>
D
Malfunction of the engine-ECU <M/T> or
engine-A/T-ECU <A/T>
OK
Replace the engine-ECU <M/T> or engine-A/T-ECU <A/T>.
No
Measure at the combination meter connector D-03.
D
Disconnect the connector, and measure at the harness side.
D
Disconnect the engine-ECU <M/T> or engine-A/T-ECU <A/T>
connector
D
Continuity between 16 and earth
OK:
No continuity
NG
Check the harness wire between combination meter and engine-
ECU <M/T> or engine-A/T-ECU <A/T> connector, and repair if
necessary.
MUT-
II
Self-Diag code
Are diagnosis codes displayed?
Yes
Refer to P.13A-8, INSPECTION CHART FOR DIAGNOSIS
CODES.

Mitsubishi FUEL Specifications

General

Brand	Mitsubishi
Model	FUEL
Category	Automobile Accessories
Language	English