Mitsubishi Evolution X. Manual — part 726
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-351
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
."
(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 audio
diagnostic trouble code.
Check if the DTC is set to the audio.
Q: Is the DTC set?
YES : Diagnose the radio and CD player.
NO : Go to Step 3.
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the occupant classifica-
tion-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 slide adjuster (RH) (Refer to GROUP
52A, Front Seat Assembly
).
NO : There is an intermittent malfunction such as poor
engaged connector(s) or open circuit (Refer to
GROUP 00, How to Cope with Intermittent
Malfunction
).
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-352
DTC U0195: Satellite Radio Tuner CAN Timeout
CAUTION
• If the DTC U0195 is set in the occupant classi-
fication-ECU, always diagnose the CAN main
bus lines.
• When replacing the ECU, always check that
the communication circuit is normal.
.
TROUBLE JUDGMENT
If the signal from satellite radio tuner cannot be
received, the occupant classification-ECU sets the
DTC U0195.
.
JUDGMENT CRITERIA
Because of the CAN-B bus circuit malfunction, if
occupant classification-ECU becomes unable to per-
form the normal data transmission, occupant classifi-
cation-ECU determines that an abnormality is
present.
.
TROUBLESHOOTING HINTS
• The CAN bus may be defective.
• The satellite radio tuner may be defective.
• The occupant classification-ECU may be defec-
tive.
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
."
(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
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-353
STEP 2. Using scan tool MB991958, read the satellite radio
tuner diagnostic trouble code.
Check if DTC is set to the satellite radio tuner.
Q: Is the DTC set?
YES : Diagnose the satellite radio.
NO : Go to Step 3.
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the occupant classifica-
tion-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 slide adjuster (RH) (Refer to GROUP
52A, Front Seat Assembly
).
NO : There is an intermittent malfunction such as poor
engaged connector(s) or open circuit (Refer to
GROUP 00, How to Cope with Intermittent
Malfunction
).
DTC U0197: Hands Free Module CAN Timeout
CAUTION
• If the DTC U0197 is set in the occupant classi-
fication-ECU, always diagnose the CAN main
bus lines.
• When replacing the ECU, always check that
the communication circuit is normal.
.
DIAGNOSTIC FUNCTION
When the signals from hands free module cannot be
received, the occupant classification-ECU sets the
DTC U0197.
.
JUDGMENT CRITERIA
Because of the CAN-B bus circuit malfunction, if
occupant classification-ECU becomes unable to per-
form the normal data transmission, occupant classifi-
cation-ECU determines that an abnormality is
present.
.
TROUBLESHOOTING HINTS
• The CAN bus line may be defective.
• The hands free module may be defective.
• The occupant classification-ECU may be defec-
tive.
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)
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-354
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
."
(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 hands free
module diagnostic trouble code.
Check if the DTC is set to the hands free module.
Q: Is the DTC set?
YES : Diagnose the hands-free cellular phone system.
NO : Go to Step 3.
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the occupant classifica-
tion-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 slide adjuster (RH) (Refer to GROUP
52A, Front Seat Assembly
).
NO : There is an intermittent malfunction such as poor
engaged connector(s) or open circuit (Refer to
GROUP 00, How to Cope with Intermittent
Malfunction
).
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
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