Mitsubishi Evolution X. Manual — part 725
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-347
STEP 2. Using scan tool MB991958, read the combination
meter diagnostic trouble code
Check if DTC is set to the combination meter.
Q: Is the DTC set?
YES : Diagnose the combination meter.
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 U0164: A/C-ECU CAN Timeout
CAUTION
• If the DTC U0164 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
If the signal from A/C-ECU cannot be received, the
occupant classification-ECU sets the DTC U0164.
.
JUDGMENT CRITERIA
Because of the CAN-B bus circuit malfunction, if the
occupant classification-ECU becomes unable to per-
form the normal data transmission, the occupant
classification-ECU determines that an abnormality is
present.
.
TROUBLESHOOTING HINTS
• The CAN bus line may be defective
• The A/C-ECU 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-348
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 A/C
diagnostic trouble code.
Check if DTC is set to the A/C-ECU.
Q: Is the DTC set?
YES : Diagnose the A/C.
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-349
DTC U0168: KOS-ECU or WCM CAN Timeout
CAUTION
• If DTC U0168 is set in the occupant classifica-
tion-ECU, always diagnose the CAN main bus
lines.
• When replacing the ECU, always check that
the communication circuit is normal.
.
DIAGNOSTIC FUNCTION
If the signal from KOS-ECU or WCM cannot be
received, the occupant classification-ECU sets the
DTC U0168.
.
JUDGMENT CRITERIA
Because of the CAN-B bus circuit malfunction, if the
occupant classification-ECU becomes unable to per-
form the normal data transmission, the occupant
classification-ECU determines that an abnormality is
present.
.
TROUBLESHOOTING HINTS
• Malfunction of CAN bus line may be defective.
• Malfunction of the KOS-ECU may be defective.
• Malfunction of the WCM may be defective.
• Malfunction of the occupant classification-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,
).
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-350
STEP 2. Using scan tool MB991958, read the KOS-ECU or
WCM diagnostic trouble code.
Check again if the DTC is set to the KOS-ECU or WCM.
Q: Is the DTC set?
YES : Diagnose the KOS or WCM.
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 U0184: Audio CAN Timeout
CAUTION
• If the DTC U0184 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 radio and CD player or CD
changer cannot be received, the occupant classifica-
tion-ECU sets the DTC U0184.
.
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 radio and CD player or CD changer 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)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст