Mitsubishi Evolution X. Manual — part 1055
ETACS
TSB Revision
CHASSIS ELECTRICAL
54A-581
HOW TO DIAGNOSE THE CAN BUS LINES
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)
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "CAN bus diagnosis" from the start-up screen.
4. When the vehicle information is displayed, confirm that it
matches the vehicle being diagnosed.
• If they match, go to Step 8.
• If not, go to Step 5.
5. Select the "view vehicle information" button.
6. Enter the vehicle information and select the "OK" button.
7. When the vehicle information is displayed, confirm again
that it matches the vehicle being diagnosed.
• If they match, go to Step 8.
• If not, go to Step 5.
8. Select the "OK" button.
9. When the optional equipment screen is displayed, choose
the one which the vehicle is fitted with, and then select the
"OK" button.
CHECK OF FREEZE FRAME DATA
The freeze frame data can be checked by using the
scan tool (GROUP 00, How to Cope with Intermittent
Malfunction
).
.
When detecting fault and storing the DTC, the ECU
connected to CAN bus line obtains the data before
the determination of the DTC and the data when the
DTC is determined, and then stores the ECU status
of that time. By analyzing the data from scan tool, the
troubleshooting can be performed more efficiently.
The displayed items are as shown in the table below.
DISPLAY ITEM LIST
NOTE:
.
•
*1
: If a failure occurs to both the ASC-ECU and
ETACS-ECU, 0000 km or FFFF km is displayed
to the scan tool MB991958.
•
*2
: Total elapsed time can be stored up to 65,534
minutes (45.5 days). The display of scan tool is
fixed to 65,534 minutes after 65,534 minutes
have elapsed. Or, if the battery is disconnected,
the total elapsed time cannot be measured prop-
Item No.
Item name
Data item
Unit
01
Odometer
Total driving distance after the diagnostic trouble
code is generated
km
*1
02
Ignition cycle
Number of times the ignition switch is turned "ON" or
"LOCK (OFF)" after the past failure transition
Number of
counts is
displayed.
03
Elapsed time after
failure
Total elapsed time after a diagnostic trouble code is
generated
min
*2
04
Current trouble
accumulative time
Cumulative time for current malfunction of
diagnostic trouble code
min
ETACS
TSB Revision
CHASSIS ELECTRICAL
54A-582
erly. Thus, 65,535 minutes (null value) is dis-
played. Because it is calculated based on the
ETACS-ECU information, the correct display may
not be shown if the ETACS-ECU has had a time-
out.
DIAGNOSTIC TROUBLE CODE CHART
M1545001100459
Diagnostic trouble
code number
Trouble content
Reference page
U0001
Bus off (CAN-C)
U0019
Bus off (CAN-B)
U0100
Engine control module CAN timeout
U0101
TC-SST-ECU CAN timeout
U0103
Shift lever CAN timeout
U0121
ASC-ECU CAN timeout
U0126
Steering wheel sensor CAN timeout
U0136
S-AWC-ECU CAN timeout
U0151
SRS-ECU CAN timeout
U0154
Occupant classification-ECU CAN timeout
U0155
Combination meter CAN timeout
U0164
A/C-ECU CAN timeout
U0168
WCM or KOS-ECU CAN timeout
U0184
Audio CAN timeout
U0195
Satellite radio tuner CAN timeout
U0197
Hands free module CAN timeout
U0245
CAN box unit CAN timeout
U1108
Excess CAN-B ECU detection
U1120
Bus line (CAN-C) low input
U1121
Bus line (CAN-C) high input
U0169
Sunroof LIN timeout <Vehicles with sunroof>
Refer to GROUP 54B,
Diagnosis
.
U0215
P/W SW (DR) LIN timeout
U0231
Rain light sensor LIN timeout <Vehicles with auto light
function>
U1109
Column SW LIN timeout
U150B
Column SW checksum error
U150C
P/W SW (DR) checksum error
U1511
Sunroof checksum error <Vehicles with sunroof>
U1512
Rain light sensor checksum error <Vehicles with auto
light function>
U1514
Bit error (LIN)
U1515
No-Bus activity error (LIN)
U0331
*
ECU internal error
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CHASSIS ELECTRICAL
54A-583
NOTE:
*
: If diagnostic trouble codes No. U0331,
B1761, B222C, B2206, or B2215 is set, there may be
an error with the coding data stored in the
ETACS-ECU.
B1034
Ambient air temperature sensor system (short circuit) Refer to GROUP 55,
Auto A/C Diagnosis
B1035
Ambient air temperature sensor system (open circuit)
B16A0
Taillight (RH) open circuit
B16A1
Taillight (LH) open circuit
B16A2
Blown turn-signal light (LH) bulb
B16A3
Turn-signal light (LH) short circuit
B16A4
Blown turn-signal light (RH) bulb
B16A5
Turn-signal light (RH) short circuit
B16A6
Turn-signal fuse blown
B16A7
Taillight (RH) short circuit
B16A8
Taillight (LH) short circuit
B1761
*
VIN not recorded
B210A
+B power supply (low input)
B210B
+B power supply (high input)
B222C
*
Coding incomplete
B2206
*
Chassis number does not match
B2215
*
ECU internal error
B2350
Lighting switch
B2351
Wiper switch
B2353
Ignition power supply (low input)
B2354
Ignition power supply (high input)
Diagnostic trouble
code number
Trouble content
Reference page
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CHASSIS ELECTRICAL
54A-584
DIAGNOSIS TROUBLE CODE PROCEDURES
DTC U0001: Bus off (CAN-C)
DTC U0019: Bus off (CAN-B)
CAUTION
• If DTC U0001 or U0019 is set to the
ETACS-ECU, always diagnose the CAN bus
line.
• Before replacing the ECU, ensure that the
communication circuit is normal.
.
TROUBLE JUDGEMENT
When the ETACS-ECU is returned from the bus off
state, or when the bus off error is indicated to the
ETACS-ECU state, the DTC U0001 (CAN-C) or
U0019 (CAN-B) is stored.
.
TECHNICAL DESCRIPTION (COMMENT)
The ETACS-ECU may have a malfunction, or the
ETACS-ECU power supply or earth circuit may have
a problem.
.
TROUBLESHOOTING HINTS
• The ETACS-ECU may be defective.
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
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. Using scan tool MB991958, diagnose the CAN bus
line.
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 the
Scan Tool (M.U.T.-III)
."
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?
YES : Go to Step 2.
NO : Repair the CAN bus line (Refer to GROUP 54C,
).
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
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