Mitsubishi Pajero Pinin. Manual - part 357

SWS – 

Troubleshooting

54B-30

Inspection Procedure I-3

Headlamp, tail lamp: Headlamps (high-beam) do not
illuminate.

Probable cause

The column switch or the front-ECU is suspected to be defective.

D

Malfunction of column switch

D

Malfunction of front-ECU

D

Malfunction of harness wire or connector

NOTE
If only one of the headlamps (high-beam) does not illuminate, the harness wire between the headlamp
and front-ECU may be defective or the headlamp bulb may be burned out. In this case, check the headlamp
circuit.

OK

Replace the Front-ECU.

Is the headlamps (low-beam) operated normally?

No

Check the headlamp (low-beam) circuit. (Refer to P.54B-29, In-
spection Procedure I-2.)

Yes

MUT-

II

 input signal check

D

Dimmer switch

NG

Check the dimmer switch input circuit. (Refer to P.54B-45, Inspec-
tion Procedure N-14.)

Inspection Procedure I-4

Headlamp, tail lamp: Headlamps do not illuminate when
the passing switch is operated.

Probable cause

If the headlamps (low-beam and high-beam) are defective, the column switch or
the front-ECU is suspected to be defective.

D

Malfunction of column switch

D

Malfunction of front-ECU

D

Malfunction of harness wire or connector

OK

Replace the Front-ECU.

Is the headlamps (low-beam and high-beam) operated normally?

No

Check the defective circuit. (Refer to P.54B-12, Trouble Symptom
Chart.)

Yes

MUT-

II

 input signal check

D

Passing switch

NG

Check the passing switch input circuit. (Refer to P.54B-45, Inspec-
tion Procedure N-14.)

SWS – 

Troubleshooting

54B-31

Inspection Procedure I-5

Headlamp, tail lamp: The headlamp auto-cut function does
not work normally.

Probable cause

The ETACS-ECU operates the headlamp auto-cut function, based on the signals
from the following switch:

D

Ignition switch (IG1)

D

Driver’s door switch

D

Tail lamp switch

D

Headlamp switch

If the function does work normally, a defect on relevant input circuits, the
ETACS-ECU or the front-ECU is suspected.

D

Malfunction of driver’s door switch

D

Malfunction of column switch.

D

Malfunction of front-ECU

D

Malfunction of harness wire or connector

OK

Replace the front-ECU.

No

MUT-

II

 input signal check

D

Ignition switch (IG1)

D

Driver’s door

D

Tail lamp switch

D

Headlamp switch

NG

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

Is a diagnosis code output when the ignition switch is at the
OFF (LOCK) position?

Yes

Carry out troubleshooting while referring to the Diagnosis
Code Chart on P.54B-7.

Inspection Procedure I-6

Headlamp, tail lamp: Headlamps dimmer switch auto-reset
function does not work normally.

Probable cause

The headlamp dimmer switch auto-reset function is controlled by the front-ECU.
If a defect appears, the front-ECU may be defective.

D

Malfunction of front-ECU

Replace the front-ECU.

Inspection Procedure I-7

Headlamp, tail lamp: Daytime running lamp (DRL) function
does not work.

Probable cause

The headlamp dimmer switch auto-reset function is controlled by the front-ECU.
If a defect appears, the front-ECU may be defective.

D

Malfunction of ETACS-ECU

D

Malfunction of front-ECU

D

Malfunction of harness wire or connector.

Are the tail lamp and headlamps operated normally?

No

Check the defective device. (Refer to P.54B-12, Trouble Symptom
Chart.)

Yes

Measure at ETACS-ECU connector C-83.

D

Disconnect connector and measure at harness side.

D

Continuity between terminal 29 and body earth.
OK: Continuity

NG

Check the following connectors:
C-02, C-83

OK

Check trouble symptoms.

NG

Repair

NG

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

OK

Replace the ETACS-ECU or front-ECU.

SWS – 

Troubleshooting

54B-32

Inspection Procedure J-1

Flasher timer: Turn-signal lamp do not flash when the
turn-signal lamp switch is turned on.

Probable cause

The ETACS-ECU makes the turn-signal lamps flash, based on the input signals
from the following switched:

D

Ignition switch (IG1)

D

Turn-signal lamp switch

If the turn-signal lamps do not flash normally, a defect on the relevant circuits or
the ETACS-ECU may be suspected.
If the hazard warning lamps also do not flash, a defect in the ETACS-ECU
power supply line specific to the turn-signal lamps is suspected.

D

Malfunction of column switch

D

Malfunction of ETACS-ECU

D

Malfunction of harness wire or connector.

NOTE
If only one of the turn-signal lamp does not flash, the harness wire between the lamp and ETACS-ECU
may be defective or the lamp bulb may be burned out. In this case, check the turn-signal lamp and hazard
warning lamp circuit.

Is the hazard warning lamp operated normally?

Yes

MUT-

II

 input signal check

D

Ignition switch (IG1)

D

Turn-signal lamp switch

No

Measure at ETACS-ECU connector C-82.

D

Disconnect connector and measure at J/B side.

D

Voltage between terminal 11 and body earth.
OK: System voltage.

NG

Check the following connectors:
C-72, C-82

OK

Replace the ETACS-
ECU.

NG

Check the defective input
circuit. (P.54B-13, De-
fects Found by Input Sig-
nal Check.)

OK

Check trouble symptoms.

NG

Repair

NG

Check the harness wire between ETACS-ECU and battery.

OK

Check the following connectors:
C-68, C-76, C-78, C-82

OK

Check trouble symptoms.

NG

Repair

NG

Check the harness wire between ETACS-ECU and turn-signal
lamps.

NG

Repair

OK

Replace the ETACS-ECU.

SWS – 

Troubleshooting

54B-33

Inspection Procedure J-2

Flasher timer: Hazard warning lamp do not flash when the
hazard warning lamp switch is turned on.

Probable cause

The ETACS-ECU makes the turn-signal lamps flash, base on the input signals
from the hazard warning lamp switch.
If the turn-signal lamps do not flash normally, the hazard warning lamp switch
input circuit or the ETACS-ECU may be defective.

D

Malfunction of hazard warning lamp switch

D

Malfunction of ETACS-ECU

D

Malfunction of harness wire or connector.

NOTE
If only one of the turn-signal lamp does not flash, the harness wire between the lamp and ETACS-ECU
may be defective or the lamp bulb may be burned out. In this case, check the turn-signal lamp and hazard
warning lamp circuit.

OK

Replace the ETACS-ECU.

Is the turn-signal lamp operated normally?

No

Check the turn-signal lamp circuit. (Refer to P.54B-32, Inspection
Procedure J-1.)

Yes

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

D

Light reminder warning function

D

Central door locking system

D

Room lamp

NG

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

OK

MUT-

II

 input signal check

D

Hazard warning lamp switch

NG

Check the hazard warning lamp switch input circuit. (Refer to
P.54B-39, Inspection Procedure N-4.)