engine MITSUBISHI 380 2005 Workshop Manual

GENERAL DESCRIPTION
TRACTION CONTROL SYSTEM (TCL)13C-2
GENERAL DESCRIPTIONM1136000100029
Traction Control systems are a significant safety fea-
ture designed to prevent wheel spin during accelera-
tion. This results in improved vehicle stability and
steer ability. When excessive wheel spin is detected,
the system will automatically reduce engine torque
via the engine management system. The Engine
ECU can reduce throttle position, cut fuel injection
and retard ignition to one or more cylinders depend-ing on how much torque reduction is required and
will continue to occur until the wheels are no longer
spinning. During traction control operation the TCL
warning lamp will flash to inform the driver that the
vehicle is under traction control. This will continue
until traction control is finished.
CONSTRUCTION DIAGRAM
91011
1213141516 12345
678

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TRACTION CONTROL SYSTEM (TCL)13C-3
TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
INTRODUCTION TO TRACTION CONTROL SYSTEM (TCL) DIAGNOSISM1136004600026
TCL Diagnostic Trouble Code Detection
Conditions
TCL diagnostic trouble codes (TCL DTCs) are set
under different conditions, depending on the mal-
function detected. Most TCL DTCs will only be set
during vehicle operation. Some TCL DTCs will also
be set during the TCL self-check immediately after
the engine is started. When you check if an TCL DTC will be displayed again after the DTC has been
erased, you should recreate the TCL DTC set condi-
tions. Depending on the detection timing and set
conditions for the specific TCL DTC, you must either
drive the vehicle or turn the engine off and restart it.
To set the proper conditions for that DTC again, refer
to "TCL DTC SET CONDITIONS" for each TCL DTC
that you are trying to reset.
TROUBLESHOOTING STRATEGYM1136003100062
Use these steps to plan your diagnostic strategy. If
you follow them carefully, you will check most of the
possible causes of a TCL problem.
1. Gather information from the customer.
2. Verify that the condition described by the
customer exists.
3. Check the vehicle for any TCL DTC. (Refer to
P.13C-3, Diagnosis Function
How to Read and
Erase Diagnostic Trouble Codes).
4. If you can verify the condition but no TCL DTCs
are set, and the malfunction may be intermittent.
(Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
How
to Cope with Intermittent Malfunctions P.00-14).
5. If you can verify the condition but there is no TCL
DTCs, or the system cannot communicate with
diagnostic tool MB991958 (MUT-III sub
assembly), and find the fault. (Refer to P.13C-23,
Symptom Chart).6. If there is a TCL DTC, record the number of the
code, then erase the code from vehicle memory
using the diagnostic tool MB991958 (MUT-III sub
assembly). (Refer to P.13C-3, Diagnosis Function
How to Read and Erase Diagnostic Trouble
Codes).
7. Re-create the TCL DTC set conditions to see if
the same TCL DTC will set again. (Refer to
P.13C-3, Diagnosis Function
How to Read and
Erase Diagnostic Trouble Codes).
If the same TCL DTC sets again, perform the
diagnostic procedures for the set code. (Refer to
P.13C-8, Diagnostic Trouble Code Chart).
NOTE: If the ABS-8 ECU or the active wheel
speed sensor are disconnected, or if the wir-
ing is an open/ short circuit, the ABS 8 ECU
will shut off power supply to the respective
wheel speed sensor. All other wheel speed
sensors will operate normally. To restore the
power supply, the ignition switch must be
turned to the "OFF" position then to the "ON"
position again.
DIAGNOSIS FUNCTIONM1136003200025
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

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TRACTION CONTROL SYSTEM (TCL)13C-10
NOTE: Since the TCL is controlled with the same ABS/TCL-ECU used to control the ABS, the codes (with a
*) used only for the ABS also appear.
The inspection contents for the codes (with a *) used only for the ABS do not described in this group.
DIAGNOSTIC TROUBLE CODE PROCEDURES
U1100 CAN Communications System Time Out Error Engine Related Data
If DTC U1100 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.
NOTE: If the ABS-8 ECU or the active wheel
speed sensor are disconnected, or if the wiring is
an open/ short circuit, the ABS 8 ECU will shut
off power supply to the respective wheel speed
sensor. All other wheel speed sensors will oper-
ate normally. To restore the power supply, the
ignition switch must be turned to the "OFF" posi-
tion then to the "ON" position again.
.
DTC SET CONDITION
The ABS/TCL-ECU receives engine system-related
signals from the ENGINE-ECU via CAN bus lines.
.
TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THESE DTCS ARE
TO SET ARE:)
Damaged harness or connector.
Malfunction of the ENGINE-ECU.
Malfunction of the ABS/TCL-ECU.
DIAGNOSIS
Required Special Tools:
MB991958: Diagnostic Tool (MUT-III Sub Assembly)
MB991824: V.C.I.
MB991827: MUT-III USB Cable
MB991910: MUT-III Main Harness A U1073 CAN communications system bus off GROUP 35B, ABS
Diagnosis

Diagnostic Trouble
Code Procedures
U1073 P.35B-68
U1100 CAN communications system time out error engine related data
P.13C-10
U1101 CAN communications system time out error A/T related data
P.13C-14
U1400 Dynamic range error APS1
P.13C-22
U1415 CAN invalid signal Gear Position GROUP 23A
Diagnostic Trouble
Code Chart P.23A-34 DTC INSPECTION ITEM DIAGNOSTIC CONTENT REFERENCE PAGE

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TRACTION CONTROL SYSTEM (TCL)13C-12
STEP 3. Using diagnostic tool MB991958, read the
diagnostic trouble code.
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. (Refer to P.13C-3).
(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 (U1100): ENGINE-ECU time-out (related to
engine). (Refer to GROUP 54B, SWS Diagnosis

General Description
Diagnostic Function How to
Read and Erase Diagnostic Trouble Code
P.54B-10).
Combination meter
DTC (U1100): ENGINE-ECU time-out (related to
engine). (Refer to GROUP 54A, Combination Meter
Assembly Diagnosis
Diagnosis Function How to
Read and Erase Diagnostic Trouble Code
P.54A-46).
Multi-center display
DTC (U1100): ENGINE-ECU time-out (related to
engine). (Refer to GROUP 54A, Multi-center Display
Diagnosis Function How to Read and Erase
Diagnostic Trouble Code P.54A-251).
A/C-ECU
DTC (U1100): ENGINE-ECU time-out (related to
engine). (Refer to GROUP 55, Auto A/C Diagnosis

Diagnostic Function
How to Read and Erase Diag-
nostic Trouble Code P.55-6) A/C>.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect diagnostic tool MB991958.
Q: Is DTC (U1100) set?
YES : Go to Step 4.
NO : Go to Step 5.

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TRACTION CONTROL SYSTEM (TCL)13C-13
STEP 4. Using diagnostic tool MB991958, read the
diagnostic trouble code.
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. (Refer to P.13C-3).
(2) Turn the ignition switch to the "ON" position.
(3) Use diagnostic tool MB991958 to read the TCL diagnostic
trouble codes. (Refer to P.13C-3).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect diagnostic tool MB991958.
Q: Is DTC U1100 set?
YES : Replace the Engine-ECU. [Refer to GROUP 13A,
Engine-ECU P.13A-675]. Then go to Step 6.
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 P.00-14).
STEP 5. Using diagnostic tool MB991958, read the
diagnostic trouble code.
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. (Refer to P.13C-3).
(2) Turn the ignition switch to the "ON" position.
(3) Use diagnostic tool MB991958 to read the TCL diagnostic
trouble codes. (Refer to P.13C-3).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect diagnostic tool MB991958.
Q: Is DTC U1100 set?
YES : Replace the hydraulic unit (integrated with
ABS/TCL-ECU). (Refer to GROUP 35B
Hydraulic
Unit P.35B-93). Then go to Step 6.
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 P.00-14).

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TRACTION CONTROL SYSTEM (TCL)13C-17
STEP 4. Using diagnostic tool MB991958, read the
diagnostic trouble code.
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. (Refer to P.13C-3).
(2) Turn the ignition switch to the "ON" position.
(3) Use diagnostic tool MB991958 to read the TCL diagnostic
trouble codes. (Refer to P.13C-3).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect diagnostic tool MB991958.
Q: Is DTC U1101 set?
YES : Replace the Engine-ECU. [Refer to GROUP 13A,
Engine-ECU P.13A-675]. Then go to Step 6.
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 P.00-14).
STEP 5. Using diagnostic tool MB991958, read the
diagnostic trouble code.
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. (Refer to P.13C-3).
(2) Turn the ignition switch to the "ON" position.
(3) Use diagnostic tool MB991958 to read the TCL diagnostic
trouble codes. (Refer to P.13C-3).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect diagnostic tool MB991958.
Q: Is DTC U1101 set?
YES : Replace the hydraulic unit (integrated with
ABS/TCL-ECU). (Refer to GROUP 35B
Hydraulic
Unit P.35B-93). Then go to Step 6.
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 P.00-14).

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TRACTION CONTROL SYSTEM (TCL)13C-18
STEP 6. Using diagnostic tool MB991958, read the
diagnostic trouble code.
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. (Refer to P.13C-3).
(2) Turn the ignition switch to the "ON" position.
(3) Use diagnostic tool MB991958 to read the TCL diagnostic
trouble codes. (Refer to P.13C-3).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect diagnostic tool MB991958.
Q: Is DTC U1101 set?
YES : Return to Step 1.
NO : The procedure is complete.
U1120 CAN Communications System TCL Uncontrollable by Engine Malfunction
If DTC U1120 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.
The engine control system-related DTC may
be set when DTC U1120 is set. (For details
refer to GROUP 00, Intersystem Affiliated DTC
Reference Table P.00-17). Diagnose the
engine control system first when the engine
control system-related DTC is set.
NOTE: If the ABS-8 ECU or the active wheel
speed sensor are disconnected, or if the wiring is
an open/ short circuit, the ABS 8 ECU will shut
off power supply to the respective wheel speed
sensor. All other wheel speed sensors will oper-
ate normally. To restore the power supply, the
ignition switch must be turned to the "OFF" posi-
tion then to the "ON" position again.
.
DTC SET CONDITION
The ABS/TCL-ECU receives engine system-related
signals from the Engine-ECU via CAN bus lines. If a
fail-safe related data is contained in the signal from
the Engine-ECU, DTC U1120 will be stored.
.
TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THESE DTCS ARE
TO SET ARE:)
Damaged harness or connector.
Malfunction of the Engine-ECU.
Malfunction of the ABS/TCL-ECU.

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TRACTION CONTROL SYSTEM (TCL)13C-20
STEP 2. Using diagnostic tool MB991958, diagnose the
CAN bus line.
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. (Refer to P.13C-3).
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line. (Refer to P.13C-3).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect diagnostic tool MB991958.
Q: Is the CAN bus line found to be normal?
YES : Go to Step 3.
NO : Repair the CAN bus lines. (Refer to GROUP 54C,
Diagnosis
Can Bus Diagnostic Chart P.54C-15).
Then go to Step 6.
STEP 3. Using diagnostic tool MB991958, read the
diagnostic trouble code.
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. (Refer to P.13C-3).
(2) Turn the ignition switch to the "ON" position.
(3) Check if a DTC, which relates to CAN
communication-linked systems below, is set.
A/C-ECU
DTC U1120: Failure Information on Engine-ECU
(related to engine). (Refer to GROUP 55, Auto A/C
Diagnosis
Diagnostic Function How to Read and
Erase Diagnostic Trouble Code P.55-6).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect diagnostic tool MB991958.
Q: Is DTC U1120 set?
YES : Go to Step 4.
NO : Go to Step 5.

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TRACTION CONTROL SYSTEM (TCL)13C-21
STEP 4. Using diagnostic tool MB991958, read the
diagnostic trouble code.
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. (Refer to P.13C-3).
(2) Turn the ignition switch to the "ON" position.
(3) Use diagnostic tool MB991958 to read the TCL diagnostic
trouble codes. (Refer to P.13C-3).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect diagnostic tool MB991958.
Q: Is DTC U1120 set?
YES : Replace the Engine-ECU. [Refer to GROUP 13A,
Engine-ECU P.13A-675]. Then go to Step 6.
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 P.00-14).
STEP 5. Using diagnostic tool MB991958, read the
diagnostic trouble code.
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. (Refer to P.13C-3).
(2) Turn the ignition switch to the "ON" position.
(3) Use diagnostic tool MB991958 to read the TCL diagnostic
trouble codes. (Refer to P.13C-3).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Disconnect diagnostic tool MB991958.
Q: Is DTC U1120 set?
YES : Replace the hydraulic unit (integrated with
ABS/TCL-ECU). (Refer to GROUP 35B
Hydraulic
Unit P.35B-93). Then go to Step 6.
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 P.00-14).

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
TRACTION CONTROL SYSTEM (TCL)13C-23
SYMPTOM CHARTM1136003400029
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: When the Ignition Switch is Turned to the "ON" Position
(Engine Stopped), the "TCL OFF" Indicator Light does not Illuminate. INSPECTION
PROCEDURE 2: When the Ignition Switch is Turned to the "ON" Position (Engine
Stopped), the TCL Work Indicator Light dose not Illuminate. INSPECTION
PROCEDURE 3: The "TCL OFF" Indicator Light Remains Illuminated After the Engine
is Started. INSPECTION PROCEDURE 4: The TCL Work Indicator Light Remains
Illuminated After the Engine is Started.
SYMPTOM INSPECTION
PROCEDURE NO.REFERENCE
PA G E
Communication with
diagnostic tool is not
possibleCommunication with all systems is
impossible- Group 13A, MPI
Diagnosis

Symptom
Procedures

Inspection
Procedure 1
P.13A-539.
Communication with the ABS/TCL-ECU
only is impossible- Group 35B, ABS
Diagnosis

Symptom
Procedures

Inspection
Procedure 1
P.35B-72.
When the ignition switch is turned to the "ON" position (engine
stopped), the "TCL OFF" indicator light dose not illuminate.1
P.13C-23
When the ignition switch is turned to the "ON" position (engine
stopped), the TCL work indicator light does not illuminate.2
The "TCL OFF" indicator light remains illuminated after the engine
is started.3
The TCL work indicator light remains illuminated after the engine
is started.4
When the TCL switch is push on, TCL does not be cancelled. 5
P.13C-28
TCL dose not operate. 6
P.13C-34