Mitsubishi Evolution X. Manual — part 976
HAZARD WARNING LIGHT SWITCH
TSB Revision
CHASSIS ELECTRICAL
54A-265
DIAGNOSTIC TROUBLE CODE CHART
M1541500200025
CAUTION
On troubleshooting, if the ignition switch is
turned ON while disconnecting connector(s),
diagnostic trouble code(s) associated with other
system may be set. On completion, confirm all
systems for diagnostic trouble code(s). If diag-
nostic trouble code(s) are set, erase them all.
DIAGNOSTIC TROUBLE CODE PROCEDURES
DTC B16A6: Turn-signal fuse blown
.
TROUBLE JUDGEMENT
When the hazard warning light fuse is blown, the
ETACS-ECU sets the DTC B16A6.
.
TECHNICAL DESCRIPTION (COMMENT)
With the DTC not set, when the blown fuse of hazard
warning light is detected three times consecutively,
the ETACS-ECU sets the DTC B16A3.
.
TROUBLESHOOTING HINTS
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
• Malfunction of the ETACS-ECU
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: M.U.T.-III USB Cable
• MB991910: M.U.T.-III Main Harness A (Vehicles with
CAN communication system)
STEP 1. Fuse check
Check if the turn-signal light fuse is normal.
Q: Is the check result normal?
YES : Go to Step 2.
NO : Replace the turn-signal light fuse.
Diagnostic trouble code No.
Diagnostic item
Reference page
B16A6
Turn-signal fuse blown
HAZARD WARNING LIGHT SWITCH
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CHASSIS ELECTRICAL
54A-266
STEP 2. Using scan tool MB991958, Check whether the
diagnostic trouble code is reset.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect
."
(2) Turn the ignition switch to the "ON" position.
(3) Erase the DTC.
(4) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(5) Check if DTC is set.
Q: Is the DTC set?
YES : Replace the ETACS-ECU.
NO : The procedure is complete.
TROUBLE SYMPTOM CHART
M1541500700075
SYMPTOM PROCEDURES
Inspection Procedure 1: The hazard warning lights do not illuminate.
CAUTION
Before replacing the ECU, ensure that the power
supply circuit, the ground circuit and the com-
munication circuit are normal.
.
TECHNICAL DESCRIPTION (COMMENT)
If the hazard warning light does not illuminate, the
hazard warning light switch input circuit in center
panel unit or the ETACS-ECU may have a problem.
.
TROUBLESHOOTING HINTS
• Malfunction of center panel unit
• Malfunction of the ETACS-ECU
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
Inspection
Procedure No.
Trouble symptom
Reference page
1
The hazard warning lights do not illuminate.
HAZARD WARNING LIGHT SWITCH
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CHASSIS ELECTRICAL
54A-267
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: M.U.T.-III USB Cable
• MB991910: M.U.T.-III Main Harness A (Vehicles with
CAN communication system)
STEP 1. Check that the turn-signal light operate.
Check that the turn-signal lights illuminate normally.
Q: Does turn-signal light work normally?
YES : Go to Step 2.
NO : Diagnose the headlights. Refer to Inspection
Procedure 11 "All the turn-signal lights do not
illuminate"
.
STEP 2. Using scan tool MB991958, check data list.
Using the ETACS-ECU service data, check the hazard warning
light signal.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1.Connect scan tool MB991958. Refer to "How to connect scan
tool (M.U.T.-III)
2.Turn the ignition switch to the "ACC" position.
3.Turn "ON" the hazard light switch.
Q: Does scan tool MB991958 display the items "Hazard
switch" as normal condition?
YES : (Normal condition is displayed for item) Go to Step 3.
NO : (Normal condition is not displayed for item No. 265.)
Troubleshoot the ETACS-ECU. Refer to ETACS,
Diagnosis - Inspection Procedure 10 "ETACS-ECU
does not receive any signal from the hazard warning
light switch"
.
Item No.
Item name
Normal conditions
Item 265
Hazard switch
ON
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
HORN
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CHASSIS ELECTRICAL
54A-268
STEP 3. Retest the system
Check that the hazard warning light illuminate normally.
Q: Does the taillight work normally?
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.
REMOVAL AND INSTALLATION
M1541501000154
Refer to GROUP 52A
− Instrument Center Panel
.
INSPECTION
HAZARD WARNING LIGHT SWITCH CHECK
M1541501100236
Check the ETACS service data list using the scan tool
MB991958. With the item No. 265 (Hazard switch), it is judged
normal if the display shows ON when the hazard warning light
switch is pressed, and OFF when not pressed.
HORN
REMOVAL AND INSTALLATION
M1542100200365
AC708873AC
6
2
1
5
4
3
18 ± 7 N·m
13 ± 4 ft-lb
18 ± 7 N·m
13 ± 4 ft-lb
18 ± 7 N·m
13 ± 4 ft-lb
18 ± 7 N·m
13 ± 4 ft-lb
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