Mitsubishi Pajero Pinin. Manual - part 84

 

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Mitsubishi Pajero Pinin. Manual - part 84

 

 

GDI  – 

Troubleshooting

GDI  – 

Troubleshooting

13A-85

INSPECTION PROCEDURE 21

GDI ECO indicator lamp does not illuminate.

Probable cause

If the GDI ECO indicator lamp does not illuminate after turning switch, the causes
listed in the right column are suspected.



Burned-out GDI ECO indicator lamp bulb



Open circuit or short-circuited harness wire in the
GDI ECO indicator lamp circuit



Malfunction of the engine-ECU



Malfunction of the GDI ECO indicator lamp ECU

NG

Replace the engine-ECU.

NG

Repair

OK

Check trouble symptom.

Measure at the engine-ECU connector C-17.



Disconnect the connector, and measure at the harness side.



Earth terminal 14. (Ignition switch: ON)
OK: The GDI ECO indicator lamp illuminates.

OK

Check the following connector: C-17

NG

Check trouble symptom.

Check the following connector: C-29, C-55

Repair

NG

OK

NG

Check the harness wire between the GDI-ECO Indication lamp-
ECU and engine-ECU.

INSPECTION PROCEDURE 22

GDI ECO indicator lamp remains illuminated and does not
go off.

Probable cause

If the GDI ECO indicator lamp does not gooff during high load operation, the causes
listed in the right column are suspected.



Short circuit between the GDI ECO indicator lamp
and engine-ECU



Malfunction of the engine-ECU



Malfunction of the GDI ECO indicator lamp ECU

OK

Replace the engine-ECU.

Check the relative circuits of GDI ECO indication lamp.
(Refer to GROUP 54A-Troubleshooting.)

OK

Check trouble harness wire between the GDI ECO indication lamp-
ECU and engine-ECU, and repair if necessary.

Measure at GDI ECO indicator lamp ECU connector C-55.



Disconnect the connector, and measure at the harness side.



Disconnect the engine-ECU connector.



Continuity between terminal 3 and earth
OK: No continuity

NG

GDI  – 

Troubleshooting

13A-86

INSPECTION PROCEDURE 23

Engine-ECU power supply and earth circuit system

Probable cause

The cause is probably a malfunction of the engine-ECU or one of the problems
listed at right.



Open circuit or short-circuited harness wire in the
engine-ECU power supply circuit



Open circuit or short-circuited harness wire in the
engine-ECU earth circuit



Malfunction of the engine-ECU

NG

Repair

NG

Repair

OK

Check the ignition switch. (Refer to
GROUP 54.)

(2), (3) NG

Check the harness wire between the
engine-ECU and engine control relay,
and repair if necessary.

(4) NG

Check the harness wire between the
engine-ECU and earth, and repair if
necessary.

(5) NG

OK

Check the trouble symptoms.

Check the harness wire between the
engine-ECU and the battery, and repair
if necessary.

NG

Repair

NG

Replace the engine-ECU.

OK

Check the trouble symptoms.

OK

Check the following connectors:
C-18, C-19

Check the following connector:
A-36

OK

Check the trouble symptoms.

NG

Check the harness wire between the
engine-ECU and ignition switch, and
repair if necessary.

Measure at the engine-ECU connectors
C-18, C-19.



Disconnect the connector, and
measure at the harness side.

(1) Voltage between 99 and earth

(Ignition switch: ON)
OK: System voltage

(2) Voltage between 57 and earth

OK: System voltage

(3) Voltage between 47, 59 and

earth (Ignition switch: ON)
OK: System voltage (When ter-

minal 57 is shorted to
earth)

(4) Continuity between 46, 58 and

earth
OK: Continuity

(5) Voltage between 60 and earth

OK: System voltage

(1) NG

Check the following connectors:
C-72, C-74

NG

Repair

NG

GDI  – 

Troubleshooting

13A-87

INSPECTION PROCEDURE 24

Engine control relay and ignition switch-IG system

Probable cause

When the ignition switch ON signal is input to the engine-ECU, the
engine-ECU turns on the engine control relay.
This causes system voltage to be supplied to the engine-ECU and to the
sensors and actuators.



Malfunction of the ignition switch



Malfunction of the engine control relay



Open circuit or short-circuited harness wire of the
engine control relay circuit



Malfunction of the engine-ECU

Check the harness wire between the
battery and the engine control relay,
and repair if necessary.

OK

Check the engine-ECU power supply 
and earth circuit system.
(Refer to P.13A-86, INSPECTION
PROCEDURE 23.)

OK

Measure at the engine control relay
connector A-43X.



Disconnect the connector, and
measure at the harness side.



Voltage between 3, 4 and earth
OK: System voltage

NG

Check the engine control relay. (Refer
to P.13A-102*.)

NG

Replace

NOTE
*:

Refer to the ’00 PAJERO PININ Workshop Manual (Pub. No. CKRE00E1)

GDI  – 

Troubleshooting

13A-88

INSPECTION PROCEDURE 25

Injector driver relay system

Probable cause

When the ignition switch ON signal is input to the engine-ECU, engine-ECU
turns on the injector driver relay.
This causes system voltage to be supplied to the injector driver.



Malfunction of the injector driver relay



Improper connector contact, open circuit or
short-circuited harness wire



Malfunction of the engine-ECU

NG

Check the harness wire between the injector driver relay and
the injector driver, repair if necessary.

Check the injector driver system.
(Refer to P.13A-53, INSPECTION PROCEDURE FOR
DIAGNOSIS CODE P1200.)

OK

OK

NG

Repair

Check the trouble symptoms.

NG

Check the following connector: A-44X

NG

Measure at the injector driver connector A-55.



Connect the connector.



Voltage between 12, 21 and earth (Ignition switch: ON)
OK: System voltage

OK

NG

Repair

Check the trouble symptoms.

OK

Check the following connector: C-18

NG

Check the harness wire between the injector driver relay and
the engine-ECU, and repair if necessary.

OK

NG

Repair

Check the trouble symptoms.

NG

Check the following connector: A-44X

OK

Measure at the engine-ECU connector C-18.



Disconnect the connector, and measure at the harness side.



Voltage between 55 and earth 
(Ignition switch: ON)
OK: System voltage

OK

NG

Check the harness wire between the injector driver relay and
the ignition switch, repair if necessary.

OK

NG

Repair

Check the trouble symptoms.

(2) NG

Check the following connectors: C-72, C-74

(1) NG

Check the harness wire between the injector driver relay and
the battery, repair if necessary.

Measure at the injector driver relay connector A-44X.



Disconnect the connector, and measure at the harness side.

(1) Voltage between 3 and earth

OK: System voltage

(2) Voltage between 4 and earth (Ignition switch: ON)

OK: System voltage

Check the injector driver relay. (Refer to P.13A-102*.)

NG

Replace

Check the following connector: A-36

NG

Repair

OK

Check the trouble symptoms.

NG

NOTE
*:

Refer to the ’00 PAJERO PININ Workshop Manual (Pub. No. CKRE99E1)

 

 

 

 

 

 

 

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