Mitsubishi 380. Manual — part 945
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
ANTI-LOCK BRAKING SYSTEM (ABS)
35B-5
5. If you can verify the condition but there are no
ABS DTCs, or the system cannot communicate
with the diagnostic tool, check that the basic
brake system is operating properly.
• If the basic brake system is not operating prop-
erly, refer to the GROUP 35A, Basic Brake Sys-
tem Diagnosis
• If the basic brake system is operating properly,
6. If there is an ABS DTC, record the number of the
DTC, then erase the DTC from the memory using
the diagnostic tool.
NOTE: Any DTCs stored in the ABS-ECU cannot
be erased if there is a malfunction.
7. Duplicate the ABS DTC set conditions to see if the
same ABS DTC will set again.
• If the same ABS DTC sets again or the ABS DTC
cannot be erased, perform the diagnostic proce-
dures for the DTC. Refer to
.
• If you cannot get the same ABS DTC to set
again, the malfunction is intermittent. Refer to
GROUP 00, How to use Troubleshooting/Inspec-
tion Service Points
− How to Cope with Intermit-
tent Malfunctions
.
DIAGNOSTIC FUNCTION
M1352011200596
ON-BOARD DIAGNOSTICS (OBD)
If the ABS-ECU detects any problem in the CAN
communication line or the ECUs, which the
ABS-ECU is communicating with, it stores a diagnos-
tic trouble code. The DTCs have 9 items. The DTCs
can be confirmed by connecting diagnostic tool
MB991958 (MUT-III sub assembly.) The stored
DTCs are not erased even after the ignition switch
has been turned to the LOCK (OFF) position, or the
battery has been disconnected. The DTCs can be
erased by operating diagnostic tool MB991958
(MUT-III sub assembly.)
HOW TO CONNECT THE DIAGNOSTIC TOOL
(MUT-III)
Required Special Tools:
• MB991958: Diagnostic Tool (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: MUT-III USB Cable
• MB991910: MUT-III Main Harness A
CAUTION
To prevent damage to diagnostic tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting diagnostic tool
MB991958.
1. Ensure that the ignition switch is at the "LOCK" (OFF)
position.
2. Start up the personal computer.
3. Connect special tool MB991827 to special tool MB991824
and the personal computer.
4. Connect special tool MB991910 to the special tool
MB991824.
5. Connect special tool MB991910 to the data link connector.
6. Turn the power switch special tool MB991824 to the "ON"
position.
NOTE: When the special tool MB991824 is energized, the
special tool MB991824 indicator light will be illuminated in a
green color.
7. Start the MUT-III system on the personal computer.
NOTE: Disconnect the diagnostic tool MB991958 in the
reverse order of the connecting sequence, making sure that the
ignition switch is at the "LOCK" (OFF) position.
00DB076A
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
ANTI-LOCK BRAKING SYSTEM (ABS)
35B-6
HOW TO READ AND ERASE DIAGNOSTIC
TROUBLE CODES
Required Special Tools:
• MB991958: Diagnostic Tool (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: MUT-III USB Cable
• MB991910: MUT-III Main Harness A
CAUTION
To prevent damage to diagnostic tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting diagnostic tool
MB991958.
NOTE: If the battery voltage is low, diagnostic trouble codes will
not be set. Check the battery if diagnostic tool MB991958 does
not display.
1. Connect diagnostic tool MB991958 to the data link
connector.
2. Turn the ignition switch to the "ON" position.
3. Select "Interactive Diagnosis" from the start-up screen.
4. Select "System Select."
5. Choose "ABS" .
6. Select "Diagnostic Trouble Code."
7. If a DTC is set, it is shown.
8. Choose "DTC erase" to erase the DTC.
HOW TO READ DATA LIST
Required Special Tools:
• MB991958: Diagnostic Tool (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: MUT-III USB Cable
• MB991910: MUT-III Main Harness A
00DB076A
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
ANTI-LOCK BRAKING SYSTEM (ABS)
35B-7
CAUTION
To prevent damage to diagnostic tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting diagnostic tool
MB991958.
1. Connect diagnostic tool MB991958 to the data link
connector.
2. Turn the ignition switch to the "ON" position.
3. Select "Interactive Diagnosis" from the start-up screen.
4. Select "System Select."
5. Choose "ABS" .
6. Select "Data List."
7. Choose an appropriate item and select the "OK" button.
HOW TO PERFORM ACTUATOR TEST
Required Special Tools:
• MB991958: Diagnostic Tool (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: MUT-III USB Cable
• MB991910: MUT-III Main Harness A
CAUTION
To prevent damage to diagnostic tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting diagnostic tool
MB991958.
1. Connect diagnostic tool MB991958 to the data link
connector.
2. Turn the ignition switch to the "ON" position.
3. Select "Interactive Diagnosis" from the start-up screen.
4. Select "System Select."
5. Choose "ABS" .
6. Choose "Actuator Test" from "ABS" screen.
7. Choose an appropriate item and select the "OK" button.
00DB076A
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
00DB076A
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS
ANTI-LOCK BRAKING SYSTEM (ABS)
35B-8
HOW TO DIAGNOSE THE CAN BUS LINE
Required Special Tools:
• MB991958: Diagnostic Tool (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: MUT-III USB Cable
• MB991910: MUT-III Main Harness A
CAUTION
To prevent damage to diagnostic tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting diagnostic tool
MB991958.
1. Connect diagnostic 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 whose CAN bus lines will be
diagnosed.
• If they match, go to step 8.
• If not, go to step 5.
5. Select "view vehicle information" button.
6. When the vehicle information is displayed, confirm again
that it matches the vehicle which is being diagnosed.
• If they match, go to step 8.
• If not, go to step 5.
7. Press the "OK" button.
8. When the options are displayed, choose the options (mark
the check) and then select "OK".
00DB076A
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
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