Mitsubishi Galant 9G. Manual — part 437
TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TSB Revision
TRACTION CONTROL SYSTEM (TCL)
13D-16
STEP 4. Using scan tool MB991958, read the diagnostic
trouble code.
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 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Use scan tool MB991958 to read the TCL diagnostic trouble
).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect scan tool MB991958.
Q: Is DTC U1100 set?
YES : Replace the PCM. [Refer to GROUP 13B, Power
Control Module (PCM)
]. Then go to Step
NO : It can be assumed that this malfunction is intermittent.
(Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How to
Cope with Intermittent Malfunction
STEP 5. Using scan tool MB991958, read the diagnostic
trouble code.
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 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Use scan tool MB991958 to read the TCL diagnostic trouble
).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect scan tool MB991958.
Q: Is DTC U1100 set?
YES : Replace the hydraulic unit (integrated with
ABS/TCL-ECU). (Refer to GROUP 35B
− Hydraulic
Unit
NO : It can be assumed that this malfunction is intermittent.
(Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How to
Cope with Intermittent Malfunction
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TSB Revision
TRACTION CONTROL SYSTEM (TCL)
13D-17
STEP 6. Using scan tool MB991958, read the diagnostic
trouble code.
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 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Use scan tool MB991958 to read the TCL diagnostic trouble
).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect scan tool MB991958.
Q: Is DTC U1100 set?
YES : Return to Step 1.
NO : The procedure is complete.
U1101 CAN Communications System Time Out Error A/T Related Data
CAUTION
• If DTC U1101 is set in the ABS/TCL-ECU,
always diagnose the CAN main bus line. If
there is any fault in the CAN bus lines, an
incorrect DTC may be set.
• Whenever the ABS/TCL-ECU is replaced,
ensure that the communication circuit is nor-
mal.
.
DTC SET CONDITION
The ABS/TCL-ECU receives A/T system-related sig-
nals from the PCM via CAN bus lines.
.
TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THESE DTCS ARE
TO SET ARE:)
• Damaged harness or connector.
• Malfunction of the PCM.
• Malfunction of the ABS/TCL-ECU.
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: MUT-III USB Cable
• MB991910: MUT-III Main Harness A
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TSB Revision
TRACTION CONTROL SYSTEM (TCL)
13D-18
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 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line. (Refer to
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect scan tool MB991958.
Q: Is the CAN bus line found to be normal?
YES : Go to Step 2.
NO : Repair the CAN bus lines. (Refer to GROUP 54C,
Diagnosis
− Can Bus Diagnostic Chart
Then go to Step 6.
STEP 2. Using scan tool MB991958, read the diagnostic
trouble code.
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 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Check for A/T system diagnostic trouble code. (Refer to
GROUP 23A, A/T Diagnosis
− Diagnostic Function − How
to Read and Erase Diagnostic Trouble Code
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect scan tool MB991958.
Q: Is any DTC set?
YES : Repair the automatic transaxle control system. (Refer
to GROUP 23A, A/T Diagnosis
− Diagnostic Trouble
). Then go to Step 6.
NO : Go to Step 3.
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TSB Revision
TRACTION CONTROL SYSTEM (TCL)
13D-19
STEP 3. Using scan tool MB991958, read the diagnostic
trouble code.
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 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Check if a DTC, which relates to CAN
communication-linked systems below, is set.
ETACS-ECU
• DTC 012: Power train control module time-out
(related to A/T). (Refer to GROUP 54B, SWS Diag-
nosis
− General Description − Diagnostic Function −
How to Read and Erase Diagnostic Trouble Code
).
Combination meter
• DTC 012: Power train control module time-out
(related to A/T). (Refer to GROUP 54A, Combination
Meter Assembly Diagnosis
− Diagnosis Function −
How to Read and Erase Diagnostic Trouble Code
).
Multi-center display
• DTC 012: Power train control module time-out
(related to A/T). (Refer to GROUP 54A, Multi-center
Display
− Diagnosis Function − How to Read and
).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect scan tool MB991958.
Q: Is DTC 012 set?
YES : Go to Step 4.
NO : Go to Step 5.
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
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