Mitsubishi Pajero Pinin. Manual - part 353

SWS – 

Troubleshooting

54B-14

Trouble symptom

Reference 
page

Inspection 
procedure

Power window
main switch

Any switch signal is not sent to the ETACS-ECU.

N-16

54B-46

Transmitter

Any switch signal is not sent to the ETACS-ECU.

N-17

54B-46

Multi-center dis-
play

Any switch signal is not sent to the ETACS-ECU.

N-18

54B-47

INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS

Inspection Procedure A-1

Communication with the MUT-

II

 is impossible.

Probable cause

The harness wires between the ETACS-ECU power supply line or the
ETACS-ECU and the diagnosis connector may be defective.

D

Malfunction of ETACS-ECU

D

Malfunction of harness wire or connector

Can MUT-

II

 communicate with other system?

No

Check and repair the self-diagnosis system with the MUT-

II

.

Yes

Is communication with the MUT-

II

 possible when the ignition

switch is at the ON position?

Yes

Check the ETACS-ECU battery circuit. (Refer to P.54B-47, Inspec-
tion Procedure O-1.)

No

Measure at ETACS-ECU connector C-82.

D

Disconnect connector and measure at J/B side.

D

Continuity between terminal 20 and body earth.
OK: Continuity

NG

Check following connector:
C-01, C-75, C-82

OK

Check trouble symptoms.

NG

Repair

NG

Check the harness wire between ETACS-ECU and body earth.

OK

Check following connector:
C-35, C-83

NG

Repair

NG

Check the harness wire between ETACS-ECU and diagnosis con-
nector.

NG

Repair

OK

Replace the ETACS-ECU.

OK

Check trouble symptoms.

NG

Repair

SWS – 

Troubleshooting

54B-15

Inspection Procedure B-1

Buzzer: Light reminder warning function does not work
normally.

Probable cause

The ETACS-ECU operates the light reminder warning function, based on input
signals from the following switched:

D

Ignition switch (IG1)

D

Driver’s door switch

D

Tail lamp switch

D

headlamp switch

If the function does not work normally, a defect on the relevant circuit or the
ETACS-ECU may be suspected.

D

Malfunction of driver’s door switch

D

Malfunction of column switch

D

Malfunction of ETACS-ECU

D

Malfunction of harness wire or connector

Do all of the following functions operate when the ignition
key is at the LOCK (OFF) position?

D

Central door locking system

D

Hazard warning lamp

D

Room lamp

No

Check the ETACS-ECU battery circuit. (Refer to P.54B-47, Inspec-
tion Procedure O-1.)

Yes

MUT-

II

 input signal check

D

Ignition switch (IG1)

D

Driver’s door switch

D

Tail lamp switch

D

Headlamp switch

NG

Check the defective input circuit. (Refer to P.54B-13, Defects Found
by Input Signal Check.)

OK

Replace the ETACS-ECU.

Inspection Procedure B-2

Buzzer: Multi-center display buzzer function does not
work normally.

Probable cause

If the multi-center display is operating normally, the cause is probably a
malfunction in the harness between the multi-center display and the
ETACS-ECU or in the ETACS-ECU itself.

D

Malfunction of multi-center display

D

Malfunction of ETACS-ECU

D

Malfunction of harness wire or connector

Is the multi-center display operating normally?

No

Carry out troubleshooting for the multi-center display. (Refer
to GROUP 54A – Multi-center Display.)

Yes

MUT-

II

 input signal check

D

Multi-center display

NG

Check the multi-center display input circuit. (Refer to P.54B-47,
Inspection Procedure N-18.)

OK

Replace the ETACS-ECU.

SWS – 

Troubleshooting

54B-16

Inspection Procedure C-1

Central door locking system: Central door locking system
does not work normally.

Probable cause

The power supply circuit, the circuit shared by door lock actuators, or the
ETACS-ECU may be defective.

D

Malfunction of ETACS-ECU

D

Malfunction of harness wire or connector

Measure at ETACS-ECU connector C-82.

D

Disconnect connector and measure at J/B side.

D

Voltage between terminal 12 and body earth.
OK: System voltage

NG

Check the following connectors:
C-77, C-82

OK

Check trouble symptoms.

NG

Repair

NG

Check the harness wire between ETACS-ECU and fusible link(2).

OK

Check the following connectors:
C-68, C-75, C-82

NG

Repair

OK

Check trouble symptoms.

NG

Check the harness wire between ETACS-ECU and door lock actua-
tor.

NG

Repair

OK

Replace the ETACS-ECU.

Inspection Procedure C-2

Central door locking system: Some doors do not lock or
unlock.

Probable cause

The door lock actuator, or the harness wire between ETACS-ECU and the door
lock actuator may be defective.

D

Malfunction of driver’s, passenger’s or back door
lock actuator

D

Malfunction of ETACS-ECU

D

Malfunction of harness wire or connector

Check the defective door lock actuator. (Refer to GROUP 42
– Door.)

NG

Replace the defective door lock actuator.

OK

Check the following connectors:
<Left door> C-45, C-75, C-82, E-17
<Right door> C-21, C-75, C-82, E-06
<Back door> C-68, C-82, D-15, F-08

NG

Repair

OK

Check trouble symptoms.

OK

Replace the ETACS-ECU.

Check the harness wire between ETACS-ECU and defective door
lock actuator.

Repair

NG

NG

SWS – 

Troubleshooting

54B-17

Inspection Procedure C-3

Central door locking system: All the doors do not lock or
unlock with just the driver’s door lock key cylinder key
operation or driver’s inside lock knob operation.

Probable cause

The driver’s door lock actuator switch or the ETACS-ECU may be defective.

D

Malfunction of driver’s door lock actuator

D

Malfunction of ETACS-ECU

D

Malfunction of harness wire or connector

MUT-

II

 input signal check

D

Driver’s door lock actuator switch

NG

Check the driver’s door lock actuator switch input circuit. (Refer
to P.54B-44, Inspection Procedure N-13.)

OK

Replace the ETACS-ECU.

Inspection Procedure C-4

Central door locking system: All the doors do not lock or
unlock with just the passenger’s or back door lock key
cylinder key operation.

Probable cause

The passenger’s or back door lock key cylinder or the ETACS-ECU may be
defective.

D

Malfunction of passenger’s or back door lock key
cylinder switch

D

Malfunction of ETACS-ECU

D

Malfunction of harness wire or connector

MUT-

II

 input signal check

D

Passenger’s door lock key cylinder switch

D

Back door lock key cylinder switch

NG

Check the defective input circuit. (Refer to P.54B-13, Defects Found
by Input Signal Check.)

OK

Replace the ETACS-ECU.

Inspection Procedure C-5

Central door locking system: Forgotten key prevention
function does not work.

Probable cause

The ETACS-ECU operates the forgotten key prevention function, based on the
input signals from the following switches:

D

Key reminder switch

D

Driver’s door switch

D

Driver’s door lock actuator switch

If the function does not work normally, a defect on the relevant circuit or the
ETACS-ECU may be suspected.

D

Malfunction of key reminder switch

D

Malfunction of driver’s door switch

D

Malfunction of driver’s door lock actuator

D

Malfunction of ETACS-ECU

D

Malfunction of harness wire or connector

MUT-

II

 input signal check

D

Key reminder switch

D

Driver’s door switch

D

Driver’s door lock actuator switch

NG

Check the defective input circuit. (Refer to P.54B-13, Defects Found
by Input Signal Check.)

OK

Replace the ETACS-ECU.