Mitsubishi Evolution X. Manual — part 1063
ETACS
TSB Revision
CHASSIS ELECTRICAL
54A-613
STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Replace the hands free module.
NO : The trouble can be an intermittent malfunction such
as a poor connection or open circuit in the CAN bus
lines between the hands free module and the
ETACS-ECU (Refer to GROUP 00, How to Cope with
Intermittent Malfunction
).
STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Replace the ETACS-ECU.
NO : The trouble can be an intermittent malfunction such
as a poor connection or open circuit in the CAN bus
lines between the hands free module and the
ETACS-ECU (Refer to GROUP 00, How to Cope with
Intermittent Malfunction
).
DTC U0245: CAN box unit CAN timeout
CAUTION
• If DTC U0245 is set to the ETACS-ECU, always
diagnose the CAN bus line.
• Before replacing the ECU, ensure that the
communication circuit is normal.
.
TROUBLE JUDGMENT
If the signal from CAN box unit (MMCS) cannot be
received, the ETACS-ECU sets DTC U0245.
.
JUDGMENT CRITERIA
After the following statuses continue to be true for 5
seconds, if the communication with the CAN box unit
(MMCS) cannot be established for 0.6 second or
more, the ETACS-ECU determines that a problem
has occurred.
• No abnormality is present to the network.
• Ignition switch is in the ON position.
• No abnormality is present to the power supply
fuse, or the odometer value is at 80.5 km (50.0
miles) or more.
• ETACS-ECU system voltage is at 10−16 volts.
.
TROUBLESHOOTING HINTS
• The CAN box unit may be defective.
• The ETACS-ECU may be defective.
• The CAN bus may be defective.
ETACS
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CHASSIS ELECTRICAL
54A-614
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,
).
STEP 2. Using scan tool MB991958, read the MMCS
diagnostic trouble code.
Check if DTC is set to the MMCS.
Q: Is the DTC set?
YES : Troubleshoot the MMCS (Refer to
).
NO : Go to Step 3.
STEP 3. Using scan tool MB991958, read the combination
meter diagnostic trouble code.
Check if the DTC U0245 is set to the combination meter.
Q: Is the DTC set?
YES : Go to Step 4.
NO : Go to Step 5.
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
ETACS
TSB Revision
CHASSIS ELECTRICAL
54A-615
STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Replace the CAN box unit (MMCS).
NO : The trouble can be an intermittent malfunction such
as a poor connection or open circuit in the CAN bus
lines between the CAN box unit (MMCS) and the
ETACS-ECU (Refer to GROUP 00, How to Cope with
Intermittent Malfunction
).
STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Replace the ETACS-ECU.
NO : The trouble can be an intermittent malfunction such
as a poor connection or open circuit in the CAN bus
lines between the CAN box unit (MMCS) and the
ETACS-ECU (Refer to GROUP 00, How to Cope with
Intermittent Malfunction
).
DTC U1108: Excess CAN-B ECU Detection
CAUTION
If the DTC U1108 is set to the ETACS-ECU, always
diagnose the CAN bus line.
.
TROUBLE JUDGEMENT
If the ETACS-ECU receives the signal from the
CAN-B line ECU which does not exist in the written
variant code information, the ETACS-ECU sets DTC
U1108.
.
TROUBLESHOOTING HINTS
• The ETACS-ECU may be defective.
• The CAN bus may be defective.
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)
ETACS
TSB Revision
CHASSIS ELECTRICAL
54A-616
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,
).
STEP 2. Variant code check.
Check the variant code written to the ETACS-ECU, and check
whether it matches the ECU connected to the CAN-B line.
Q: Is the check result normal?
YES : Go to Step 3.
NO : Make a correction so that the ECU connected to the
CAN-B line matches with the variant code
information, and then go to Step 3.
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Replace the ETACS-ECU.
NO : This diagnosis is complete.
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
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