Mitsubishi L200. Manual — part 692
HEADLAMP
CHASSIS ELECTRICAL
54A-135
YES <All the signals are received normally.> :
Go
to Step 4.
NO <The driver's door switch signal is not
received.> :
Refer to inspection procedure C-5
"One of the door switch signals is not
received
NO <The ignition switch (IG1) signal is not
received.> :
Refer to inspection procedure C-3
"The ignition switch (IG1) signal is not
received
."
NO <The headlamp switch signal is not received.> :
Refer to inspection procedure C-1 "The
column switch (lighting and wiper switch)
signal is not received
STEP 4. Retest the system.
Check that the headlamp automatic-shutdown func-
tion works normally.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
use Troubleshooting/inspection Service
Points
− How to Cope with Intermittent
Malfunction ).
NO :
Replace the ETACS-ECU and register the
ID codes (Refer to
Inspection Procedure 7: Daytime running lamp function does not work normally.
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If the daytime running lamp function is not operating
normally the ETACS-ECU power circuit may be
defective or the ETACS-ECU may be defective.
PROBABLE CAUSES
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
STEP 1. Check that the headlamps operate.
Do the low-beam headlamps illuminate when the
lighting switch is turned to the HEAD position?
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
First, repair the headlamps. Refer to
Inspection Procedure 1 "None of the low-
beam headlamps illuminate
."
STEP 2. M.U.T.-III diagnosis code.
When the ignition switch is turned to the "LOCK"
(OFF) position, check that the ETACS-ECU does not
set the diagnosis code.
Q: Is the diagnosis code set?
YES :
Refer to diagnosis code chart
.
NO :
Go to Step 3.
STEP 3. M.U.T.-III data list
Check the input signals below, which are related to
the daytime running lamp function.
• Turn the ignition switch to the "ON" position.
OK: Normal condition is displayed.
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Refer to inspection procedure C-3 "The
ignition switch (IG1) signal is not received
."
STEP 4. Retest the system.
Check that the daytime running lamp function works
normally.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
use Troubleshooting/inspection Service
Points
− How to Cope with Intermittent
Malfunction ).
NO :
Replace the ETACS-ECU and register the
ID codes (Refer to
Item No. Item name
Normal condition
30
Ignition switch(IG1) ON
HEADLAMP
CHASSIS ELECTRICAL
54A-136
Inspection Procedure 10: The auto lamp function does not work normally.
CAUTION
Whenever the ECU is replaced, ensure that the
power supply circuit, the earth circuit and the
communication circuit are normal.
OPERATION
The ETACS-ECU operates this function in accord-
ance with the input signals from lighting control sen-
sor and column switch (auto lamp switch).
COMMENTS ON TROUBLE SYMPTOM
If the auto lamp function does not work normally, the
above input signal circuit(s) or the ETACS-ECU may
have a problem.
PROBABLE CAUSES
• Malfunction of the lighting control sensor
• Malfunction of the column switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III CAN bus diagnostics
Use the M.U.T.-III to diagnose the CAN bus lines.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the CAN bus line (Refer to GROUP
54C
− Troubleshooting ).
STEP 2. M.U.T.-III diagnosis code
Check if diagnosis code is set to the LIN.
Q: Is the diagnosis code set?
YES :
Refer to diagnosis code chart
NO :
Go to Step 3.
STEP 3. M.U.T.-III other system diagnosis code
Check if diagnosis code is set to the ETACS-ECU.
Q: Is the diagnosis code set?
YES :
Troubleshoot the ETACS-ECU (Refer to
).
NO :
Go to Step 4.
STEP 4. Check that the headlamps operate.
Check that the headlamps (low-beam) illuminate nor-
mally.
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Refer to Inspection Procedure 1 "None of
the low-beam headlamps illuminate."
.
STEP 5. Lighting control sensor check
Check the lighting control sensor. Refer to
.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Replace the lighting control sensor.
STEP 6. Retest the system
Check that the auto lamp function works normally.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
use Troubleshooting/inspection Service
Points
− How to Cope with Intermittent
Malfunction ).
NO :
Replace the ETACS-ECU and register the
ID codes (Refer to
HEADLAMP
CHASSIS ELECTRICAL
54A-137
Inspection Procedure 8: None of the turn-signal lamps illuminate.
CAUTION
Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If none of the turn-signal lamps does not illuminate,
the ignition switch (IG1), the turn-signal lamp switch
input circuit or the ETACS-ECU may be defective.
Using a customisation function, the turn-signal lamps
can be operated even when the ignition switch is in
the ACC position.
PROBABLE CAUSES
• Malfunction of the column switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III diagnosis code.
When the ignition switch is turned to the "LOCK"
(OFF) position, check that the ETACS-ECU does not
set the diagnosis code.
Q: Is the diagnosis code set?
YES :
Refer to diagnosis code chart
.
NO :
Go to Step 2.
Turn-Signal Lamp Power Source Circuit
ETACS-ECU
RELAY
BOX
REAR
TURN-SIGNAL LAMP
·FRONT
TURN-SIGNAL LAMP
·SIDE
TURN-SIGNAL LAMP
·COMBINATION METER
TURN-SIGNAL
LAMP RELAY:LH
TURN-SIGNAL
LAMP RELAY:RH
TURN-SIGNAL
LAMP SWITCH
INPUT-SIGNAL
FUSIBLE
LINK
23
J/B SIDE
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple SI : Silver
NOTE
: LHD
: RHD
HEADLAMP
CHASSIS ELECTRICAL
54A-138
STEP 2. M.U.T.-III data list
Check the input signal from the ignition switch (IG1)
and turn-signal lamp switch.
• Turn the ignition switch to the "LOCK" (OFF)
position.
• Turn the turn-signal lamp switch (LH) to the ON
position.
• Turn the turn-signal lamp switch (RH) to the ON
position.
OK: Normal conditions are displayed for all
the items.
Q: Is the check result normal?
YES <All the signals are received normally.> :
Go
to Step 3.
NO <The ignition switch (IG1) signal is not
received.> :
Refer to inspection procedure C-3
"The ignition switch (IG1) signal is not
received
."
NO <The turn-signal lamp switch signal is not
received.> :
Refer to inspection procedure C-1
"The column switch (lighting and wiper
switch) signal is not received
STEP 3. Retest the system.
Check that the turn-signal lamps illuminate normally.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
use Troubleshooting/inspection Service
Points
− How to Cope with Intermittent
Malfunction ).
NO :
Replace the ETACS-ECU and register the
ID codes (Refer to
Inspection Procedure 9: The comfort flasher does not work normally.
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If the comfort flasher does not work normally, the col-
umn switch or the ETACS-ECU may be defective.
PROBABLE CAUSES
• Malfunction of the column switch
• Malfunction of the ETACS-ECU
DIAGNOSIS PROCEDURE
STEP 1. Check of adjustment details for the
comfort flasher
Check that the comfort flasher is set to "Operation"
using the customise function of M.U.T-III.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Using the customise function of M.U.T-III,
set the comfort flasher to "Operation."
STEP 2. M.U.T.-III diagnosis code.
When the ignition switch is turned to the "LOCK"
(OFF) position, check that the ETACS-ECU does not
set the diagnosis code.
Q: Is the diagnosis code set?
YES :
Refer to diagnosis code chart
.
NO :
Go to Step 3.
Item
No.
Item name
Normal condition
30
Ignition switch(IG1)
OFF
Item
No.
Item name
Normal condition
62
Turn-signal lamp (LH)
output
ON
63
Turn-signal lamp
(RH) output
OFF
Item
No.
Item name
Normal condition
62
Turn-signal lamp (LH)
output
OFF
63
Turn-signal lamp
(RH) output
ON
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