Mitsubishi Lancer (4A9 engine). Manual — part 132
FOG LAMP
CHASSIS ELECTRICAL
54A-190
STEP 4. M.U.T.-III data list
Use the ETACS-ECU service data to check the sig-
nal related to the operation of rear fog lamp function.
• Turn the fog lamp switch to ON.
OK: Normal condition is displayed.
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 11 "The column
switch signal is not received" .
STEP 5. Connector check: F-21 <except LANCER
(RHD)> or F-35 <LANCER (RHD)> rear fog lamp
connector
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the defective connector.
STEP 6. Check the bulb of the rear fog lamp
Check the bulb of the defective lamp.
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Replace the bulb of the defective lamp.
STEP 7. Resistance measurement at the F-21
<except LANCER (RHD)> or F-35 <LANCER
(RHD)> rear fog lamp connector
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Check the resistance between the lamp
connector and body earth.
• Resistance between F-21 <except LANCER
(RHD)> or F-35 <LANCER (RHD)> rear fog
lamp connector terminal No. 2 and body earth
OK: Continuity exists (2
Ω or less)
Q: Is the check result normal?
YES :
Go to Step 9.
NO :
Go to Step 8.
STEP 8. Wiring harness check between the F-21
<except LANCER (RHD)> or F-35 <LANCER
(RHD)> rear fog lamp connector terminal No. 2
and the body earth
NOTE: Before the wiring harness check, check the
intermediate connector F-28 <LANCER> or F-19
<LANCER SPORTBACK>, and then repair that if
necessary.
• Check the earth wires for open circuit.
Q: Is the check result normal?
YES :
Go to Step 9.
NO :
Repair the wiring harness.
STEP 9. Connector check: C-311 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 10.
NO :
Repair the defective connector.
STEP 10. Wiring harness check between the F-21
<except LANCER (RHD)> or F-35 <LANCER
(RHD)> rear fog lamp connector terminal No. 3
and the C-311 ETACS-ECU connector terminal
No. 14
NOTE: Before the wiring harness check, check the
intermediate connector F-28 <LANCER> or F-19
<LANCER SPORTBACK> and D-16, and then repair
that if necessary.
• Check the output lines for open circuit.
Q: Is the check result normal?
YES :
Go to Step 11.
NO :
Repair the wiring harness.
STEP 11. Retest the system
Check that the rear fog lamp 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.
Item No.
Item name
Normal
condition
Item 345
Fog lamp ON
ON
FOG LAMP
CHASSIS ELECTRICAL
54A-191
Inspection Procedure 5: The rear fog lamp indicator does not illuminate normally.
CAUTION
Whenever the ECU is replaced, ensure that the power supply circuit, the earth circuit and the commu-
nication circuit are normal.
COMMENTS ON TROUBLE SYMPTOM
If the rear fog lamp indicator does not illuminate nor-
mally, connector(s), wiring harness in the CAN bus
lines, the ETACS-ECU or the combination meter may
be defective.
PROBABLE CAUSES
• Malfunction of the ETACS-ECU
• Malfunction of the combination meter
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
STEP 1. Check the rear fog lamp
When the rear fog lamp switch is operated, check
that the rear fog lamps illuminate/go off normally.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
First, repair the rear fog lamp (Refer to
trouble symptom chart ).
STEP 2. 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 3.
NO :
Repair the CAN bus line (Refer to GROUP
54C
− Troubleshooting ).
STEP 3. M.U.T.-III 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. M.U.T.-III other system actuator test
Perform the actuator test for the combination meter,
and check that the rear fog lamp indicator illuminates
(Refer to Combination Meter ).
Q: Is the check result normal?
YES :
Replace the ETACS-ECU.
NO :
Replace the combination meter.
INPUT SIGNAL
ETACS-ECU
COMBINATION
METER
CAN COMMUNICATION LINE
(CAN_L LINE)
CAN COMMUNICATION LINE
(CAN_H LINE)
Rear Fog Lamp Indicator Lamp Circuit
REAR FOG LAMP
SWITCH
FOG LAMP
CHASSIS ELECTRICAL
54A-192
ON-VEHICLE SERVICE
FRONT FOG LAMP AIMING
M1540400300776
CAUTION
When marking the aiming adjustment, be sure to
mask those lamps which are not being adjusted.
1. Set the distance between the screen and the
centre of the front fog lamps as shown in the
illustration.
2. Inflate the tyres to the specified pressures and
there should be no other load in the vehicles other
than driver or substituted weight of approximately
75 kg placed in the driver’s position.
3. With the engine running at 2,000 r/min, aim the
front fog lamp.
4. Insert a Phillips screwdriver into the service hole
and place it on the adjusting screw.
5. Adjust the cut off line (boundary between light and
dark) position to the standard value with the
adjusting screw.
Standard value:
Vertical direction; 60 mm (1.15
°) below hori-
zontal (H)
Limit:
Vertical direction; 39 mm (0.75
°) to 89 mm
(1.7
°) below the horizontal (H)
NOTE: The horizontal direction is non-adjustable.
REPLACE THE FRONT FOG LAMP BULB
M1540400400762
CAUTION
Don't touch the bulb surface with bare hands or
dirty gloves. If the bulb surface (glass part) gets
dirty, clean it with alcohol or thinner immediately
and dry well, and then install it.
1. Remove the front fog lamp bezel and the front fog
lamp assembly. (Refer to .)
AC609594
AL
Front fog lamp
centre
<Vehicles with front bumper (type 1)>
AC800353AK
Front fog lamp
centre
<Vehicles with front bumper (type 2)>
AC804645
AB
Screen
3 m
Fog lamp centre
Vehicle centre line
AC609596AK
<Vehicles with front bumper (type 1)>
Phillips screwdriver
(Vertical direction adjustment)
AC800352AJ
Phillips screwdriver
(Vertical direction adjustment)
<Vehicles with front bumper (type 2)>
AC312871AB
Vertical direction
V
H
Lamp centre
Cut off line
High intensity zone
FOG LAMP
CHASSIS ELECTRICAL
54A-193
2. Disconnect the connector and withdraw the bulb.
3. After replacing the bulb, securely connect the
connector, and install the front fog lamp assembly
and the front fog lamp bezel.
FRONT FOG LAMP REMOVAL AND INSTALLATION
M1540402600513
<VEHICLES WITH FRONT BUMPER (TYPE 1)>
AC609657
AM
Front fog lamp bulb
<Vehicles with front bumper (type 1)>
AC800370 AJ
Front fog lamp bulb
<Vehicles with front bumper (type 2)>
Post-installation operation
Check the beam direction of the front fog lamp (Refer to
Front Fog Lamp Aiming ).
AC609818AD
1
2
1.2 ± 0.7 N·m
4
3
Front bumper face
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