2004 MITSUBISHI ENDEAVOR ECU

2. Turn the ignition switch to the "ON" position.
3. Erase the DTC. (Refer to TRACTION CONTROL SYSTEM (TCL)
DIAGNOSIS
).
4. Turn the ignition switch to the "LOCK" (OFF) position.
5. Turn the ignition switch to the "ON" position.
6. Check if the DTC is set.
7. Turn the ignition switch to the "LOCK" (OFF) position.
8. Disconnect scan tool MB991958.
Q: Is DTC U1120 set?
YES: Replace the hydraulic unit (integrated with ABS/TCL-ECU < FWD > or
TCL/ASC-ECU < AWD >). (Refer to HYDRAULIC UNIT
). Then go to Step
6.
NO: It can be assumed that this malfunction is intermittent. (Refer to HOW
TO COPE WITH INTERMITTENT MALFUNCTIONS
).
STEP 6. Recheck for diagnostic trouble code.
Check again if the DTC is set.
1. Connect scan tool MB991958 to the data link connector. (Refer to
TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS
). CAUTION: To prevent damage to scan tool MB991958,
always turn the ignition switch to the
"LOCK" (OFF) position before connecting or
disconnecting scan tool MB991958.

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control System (TCL) - Endeavor

CIRCUIT OPERATION
ABS/TCL-ECU < FWD > or TCL/ASC-ECU < AWD > send the illumination
signal of "TCL OFF" indicator light and TCL work indicator light to the
combination meter via the CAN communication. ABS/TCL-ECU < FWD > or TCL/ASC-ECU < AWD > 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.
COMMENT This may be caused by faults in the CAN bus line, the combination meter or the
ABS/TCL-ECU < FWD > or TCL/ASC-ECU < AWD >. TROUBLESHOOTING HINTS
Malfunction of the combination meter
Damaged harness, connector Malfunction of the ABS/TCL-ECU < FWD > or TCL/ASC-ECU < AWD
>
DIAGNOSIS
Required Special Tool:
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.
Use scan tool MB991958 to diagnose the CAN bus lines.
CAUTION: To prevent damage to scan tool MB991958,
always turn the ignition switch to the
"LOCK" (OFF) position before connecting or
disconnecting scan tool MB991958.

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control System (TCL) - Endeavor

2. Turn the ignition switch to the "ON" position.
3. Check for Combination meter system diagnostic trouble code. (Refer to
COMBINATION METERS ASSEMBLY AND VEHICLE SPEED
).
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 < FWD > or
TCL/ASC-ECU < AWD >). (Refer to HYDRAULIC UNIT
). Then go to Step
4.
NO: Replace the combination meter assembly. (Refer to COMBINATION
METER ASSEMBLY
). Then go to Step 4.
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 S
ystem does not Cancelled
.

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control System (TCL) - Endeavor

Fig. 41: Identifying Connectors: A
-02, A
-32, C
-31, C
-35
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CIRCUIT OPERATION ABS/TCL-ECU terminal 6 < FWD > or TCL/ASC-ECU terminal 15 < AWD > is
grounded every time the TCL switch is pressed. ABS/TCL-ECU < FWD > or
TCL/ASC-ECU < AWD > monitors this operation state and turns the TCL system
ON or OFF. COMMENT The cause is probably an open-circuit in the TCL switch circuit. TROUBLESHOOTING HINTS
Malfunction of the TCL switch Damaged harness, connector Malfunction of the ABS/TCL-ECU < FWD > or TCL/ASC-ECU < AWD >
DIAGNOSIS
Required Spec
ial Tools:

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control System (TCL) - Endeavor

MB991223: Harness set MB991958: Scan tool (MUT-III sub assembly)
MB991824: V.C.I. MB991827: MUT-III USB cable MB991910: MUT-III main harness A
MB991970: ABS check harness MB991952: ABS check harness
STEP 1. Measure the terminal voltage at ABS/TCL-ECU connector A-02
< FWD > or TCL/ASC-ECU connector A-32 < AWD >.
1. Disconnect all the connectors from the ABS/TCL-ECU < FWD > or
TCL/ASC-ECU < AWD >.

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control System (TCL) - Endeavor

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
2. Vehicles for FWD, connect special tool MB991970 between the
ABS/TC
L-ECU and the bod
y-side harness connector.

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control System (TCL) - Endeavor

Fig. 43: connecting Special Tool MB991970 Between ABS/TCL
-ECU

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control System (TCL) - Endeavor

And Body
-Side Harness Connector

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Vehicles for AWD, connect special tool MB991970 between the
TCL/ASC-ECU and the body-side harness connector.
4. Turn the ignition switch to the "ON" position.
5. Vehicles for FWD, measure the terminal voltage between special tool
MB991970 connector terminal 6 (ABS/TCL-ECU connector A-02
terminal 6) and ground.
When the TCL switch is not pressed, the voltage should measure
battery positive voltage (approximately 12 volts). When the TCL switch is pressed, the voltage should measure 1 volt or
less.
6. Vehicles for AWD, measure the terminal voltage between special tool
MB991952 connector terminal 15 (TCL/ASC-ECU connector A-32
terminal 15) and ground. When the TCL switch is not pressed, the voltage should measure
battery positive voltage (approximately 12 volts). When the TCL switch is pressed, the voltage should measure 1 volt or
less.
7. Turn the ignition switch to the "LOCK" (OFF) position.
8. Vehicles for FWD, disconnect special tool MB991970 between the
ABS/TCL-ECU and the body-side harness connector.
9. Vehicles for AWD, disconnect special tool MB991952 between the
TCL/ASC-ECU and the body-side harness connector.
10. Connect all the connectors from the ABS/TCL-ECU < FWD > or
TCL/ASC-ECU < AWD >.
Q: Is the terminal volta
ge batter
y terminal volta
ge when the TCL switch is
not
pressed, and is the terminal volta
ge 1 volt or less when the TCL switch
is pressed?
YES
: Go to Ste
p 6 .

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control System (TCL) - Endeavor