Mitsubishi Evolution X. Manual — part 1028
HANDS-FREE CELLULAR PHONE SYSTEM
TSB Revision
CHASSIS ELECTRICAL
54A-473
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the hands free module.
(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 (Refer
to GROUP 00, How to use
Troubleshooting/inspection Service Points
− How to
Cope with Intermittent Malfunction
DTC U0019: Bus off (CAN-B)
CAUTION
• If DTC U0019 is set, be sure to diagnose the CAN bus
line.
• When replacing the ECU, always check that the com-
munication circuit is normal.
.
TROUBLE JUDGMENT
When the hands free module is returned from the bus off state,
or when the bus error is indicated to the hands free module
state, the DTC U0019 (CAN-B) is set.
.
COMMENTS ON TROUBLE SYMPTOM
The hands free module, power supply for the hands free mod-
ule, ground circuit, or CAN bus line may have a problem.
.
PROBABLE CAUSES
• The hands free module may be defective.
• The CAN bus line may be defective.
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
• MB991824: Vehicles 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)
HANDS-FREE CELLULAR PHONE SYSTEM
TSB Revision
CHASSIS ELECTRICAL
54A-474
STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.
Use scan tool MB991958 to diagnose the CAN bus lines.
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 "ON" position.
(3) Diagnose the CAN bus line.
Q: Is the check result normal?
YES : Go to Step 2.
NO : Repair the CAN bus line. (Refer to GROUP 54C,
.) On completion, go to Step 2.
STEP 2. Recheck for diagnostic trouble code.
Check again if the DTC is set to the hands free module.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(3) Check if the DTC is set.
Q: Is the DTC set?
YES : Replace the hands free module.
NO : The trouble can be an intermittent malfunction (Refer
to GROUP 00
− How to use
Troubleshooting/inspection Service Points
− How to
Cope with Intermittent Malfunction
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
HANDS-FREE CELLULAR PHONE SYSTEM
TSB Revision
CHASSIS ELECTRICAL
54A-475
DTC U0141: ETACS CAN timeout
CAUTION
• If the DTC U0141 is set, be sure to diagnose
the CAN bus line.
• When replacing the ECU, always check that
the communication circuit is normal.
.
DIAGNOSTIC FUNCTION
If the signal from ETACS-ECU cannot be received,
the hands free module sets the diagnostic trouble
code No. U0141.
.
PROBABLE CAUSES
• The CAN bus line may be defective
• The hands free module may be defective
• The ETACS-ECU may be defective
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
• MB991824: Vehicles 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 ETACS-ECU
diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
Q: Is the DTC set?
YES : Diagnose the ETACS-ECU (Refer to
).
NO : Go to Step 3.
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
HANDS-FREE CELLULAR PHONE SYSTEM
TSB Revision
CHASSIS ELECTRICAL
54A-476
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the hands free module.
(1) Erase the diagnostic trouble code.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(3) Check if DTC is set.
Q: Is the DTC set?
YES : Replace the hands free module.
NO : The trouble can be an intermittent malfunction (Refer
to GROUP 00
− How to use
Troubleshooting/inspection Service Points
− How to
Cope with Intermittent Malfunction
DTC U0151: SRS-ABG CAN timeout
CAUTION
• If DTC U0151 is set, be sure to diagnose the
CAN bus line.
• When replacing the ECU, always check that
the communication circuit is normal.
.
DIAGNOSTIC FUNCTION
If the signal from SRS-ECU cannot be received, the
hands free module sets the DTC U0151.
.
PROBABLE CAUSES
• The CAN bus line may be defective
• The hands free module may be defective
• The SRS-ECU may be defective
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
• MB991824: Vehicles 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)
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