Mitsubishi Galant 9G. Manual — part 440
TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TSB Revision
TRACTION CONTROL SYSTEM (TCL)
13D-28
.
CIRCUIT OPERATION
• ABS/TCL-ECU send the illumination signal of
"TCL OFF" indicator light and TCL work indicator
light to the combination meter via the CAN com-
munication.
• ABS/TCL-ECU operates the "TCL OFF" indicator
light and the TCL work indicator light for three
seconds after the ignition switch is turned "ON"
position for bulb check.
.
AC305209AB
A-02 (GR)
CONNECTOR: A-02
A-02 HARNESS CONNECTOR:
COMPONENT SIDE
AC305232AO
CONNECTORS: C-01, C-02, C-03, C-29, C-101
C-29
C-01
C-101
C-03
C-02
C-01 AND C-03
HARNESS CONNECTOR:
COMPONENT SIDE
C-02 HARNESS
CONNECTOR:
COMPONENT SIDE
C-29 MALE SIDE
CONNECTOR
C-101 HARNESS
CONNECTOR:
COMPONENT SIDE
AC305720
C-215 HARNESS CONNECTOR:
COMPONENT SIDE
JUNCTION BLOCK
(FRONT VIEW)
AB
C-215
C-211
CONNECTORS: C-211, C-215
C-211 HARNESS CONNECTOR:
COMPONENT SIDE
TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TSB Revision
TRACTION CONTROL SYSTEM (TCL)
13D-29
COMMENT
This may be caused by faults in the CAN bus line,
the combination meter or the ABS/TCL-ECU.
.
TROUBLESHOOTING HINTS
• Malfunction of the combination meter.
• Damaged harness or connector.
• 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
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 check result satisfactory?
YES : Go to Step 2
NO : Repair the CAN bus lines. (Refer to GROUP 54C,
Diagnosis
− Can Bus Diagnostic Chart
Then go to Step 4.
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
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TRACTION CONTROL SYSTEM (TCL)
13D-30
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) 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 any DTC set?
, Diagnostic Trouble Code Chart.
Then go to Step 4.
NO : Go to Step 3.
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 for Combination meter system diagnostic trouble
code. (Refer to GROUP 54A, Combination Meter Assembly
Diagnosis
− Diagnosis 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 DTC U1102 set?
YES : Replace the hydraulic unit (integrated with
ABS/TCL-ECU). (Refer to GROUP 35B
− Hydraulic
Unit
NO : Replace the combination meter assembly. (Refer to
GROUP 54A
− Combination Meter Assembly
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
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TRACTION CONTROL SYSTEM (TCL)
13D-31
STEP 4. Retest the system
Q: Turn the ignition switch to the "ON" position. Do the
"TCL OFF" indicator light and the TCL work indicator
light illuminate for three seconds, and then go out after
the engine starts?
YES : The procedure is complete.
NO : . Return to Step 1.
INSPECTION PROCEDURE 5: When the TCL Switch is Push On, TCL dose not Cancelled.
AC307014
FRONT-ECU
RELAY
BOX
ABS/TCL-ECU
TAILLIGHT
RELAY
JOINT
CONNECTOR (1)
JUNCTION
BLOCK
TCL SWITCH
RHEOSTAT
BLACK
BLACK
BLACK-
YELLOW
BLACK-
YELLOW
ORANGE
GREEN-
WHITE
GREEN-
WHITE
GREEN-
WHITE
GREEN-
WHITE
ORANGE
TCL Switch System Circuit
AB
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