Mitsubishi Colt Ralliart. Manual — part 409
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-144
Step 2. Function diagnosis by using the SWS
monitor
Check the SWS communication signal, which are
related to the high-beam headlamps.
<Selected item> LIGHTING - HEADLAMP HI
• Ignition switch: ON
• Lighting switch: HEAD
• Dimmer switch: from OFF to ON, and then to
OFF again
OK: Normal conditions are displayed for all
the items
Q: Are the check results normal?
Normal conditions are displayed for all the items. :
Go to Step 3.
Normal condition is not displayed for item Nos.00,
02 or 03. :
Refer to inspection procedure N-4 "The
column switch (lighting and turn-signal lamp
switch) signal is not received
Normal condition is not displayed for item No.30. :
Refer to inspection procedure N-2 "The
ignition switch (IG1) signal is not received
."
Step 3. Connector check: B-122 headlamp relay
(HI) connector
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Repair the defective connector.
Step 4. Check the headlamp relay (HI).
Refer to GROUP 54A
− Headlamp
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Replace the headlamp relay (HI).
Step 5. Voltage measurement at B-122 headlamp
relay (HI) connector.
(1) Remove the headlamp relay (HI), and measure at
the junction block side.
(2) Voltage between B-122 headlamp relay (HI)
connector terminal Nos.1, 3 and body earth
OK: System voltage
Item No.
Item name
Normal
condition
Item 00
HEADLAMP
SW
ON
Item 02
DIMMER SW
from OFF to ON,
and then to OFF
again ("ON"
should be
displayed when
the dimmer
switch is
operated)
Item 03
PASSING SW OFF
Item 30
IG SW(IG1)
ON
AC313870AE
Connector: B-122
Junction Block (Front view)
Harness side
AC313870AE
Connector: B-122
Junction Block (Front view)
Harness side
AC313972AU
Connector B-122
(Junction block side)
Main
Index
Group
TOC
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-145
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Go to Step 6.
Step 6. Check the wiring harness between B-122
headlamp relay (HI) connector terminal Nos.1, 3
and the fusible link (1).
NOTE:
Prior to the wiring harness inspection, check the
junction block connector B-108, and repair if neces-
sary.
• Check the power supply line from the fusible link
(1) for open circuit.
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
).
NO :
Repair the wiring harness.
Step 7. Connector check: B-134 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 8.
NO :
Repair the defective connector.
Step 8. Retest the system.
Check that the low-beam headlamps illuminate nor-
mally.
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
).
NO :
Replace the ETACS-ECU.
AC313870AE
Connector: B-122
Junction Block (Front view)
Harness side
AC313870
Connector: B-108
BD
Junction block (Front view)
B-108(B)
Harness side
AC313872 AH
Connector: B-134
Harness side
Junction block (Rear view)
Main
Index
Group
TOC
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-146
INSPECTION PROCEDURE J-4: The high-beam and low-beam headlamps do not illuminate when the
passing switch is operated.
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If the low-beam and high-beam headlamps are nor-
mal, the passing switch input signal circuit or the
ETACS-ECU may be defective.
POSSIBLE CAUSES
• Malfunction of the column switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Check the operation of the headlamps.
Check that the low-beam and high-beam headlamps
illuminate normally.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the headlamps. Refer to trouble
symptom chart
Step 2. SWS monitor data list.
Check the ETACS-ECU signals which are related to
the headlamps.
<Selected item> COLUMN ECU
• Passing lamp switch: ON
OK: Normal condition is displayed.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Refer to inspection procedure N-4 "The
column switch (lighting and turn-signal lamp
switch) signal is not received
Step 3. Retest the system.
When the passing switch is turned on, check if the
headlamps 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
).
NO :
Replace the ETACS-ECU.
Item No.
Item name
Normal
condition
Item 03
PASSING SW
ON
Main
Index
Group
TOC
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-147
INSPECTION PROCEDURE J-5: The headlamp(s) do not illuminate.
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If any of the headlamps does not illuminate, the wir-
ing harness connector(s), the bulb or the fuse may
be defective or burned out.
POSSIBLE CAUSES
• Malfunction of the headlamp bulbs
• Damaged harness wires and connectors
HEADLAMP
RELAY (HI)
HEADLAMP
RELAY (LO)
FRONT
COMBINATION
LAMP
(HEAD: LH)
FRONT
COMBINATION
LAMP
(HEAD: RH)
Headlamps Circuit
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
Main
Index
Group
TOC
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст