tcl MITSUBISHI ENDEAVOR 2004 Service Repair Manual

Fig. 40: TCL Switch System Circuit

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

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

Fig. 42: I
dentif
ying Co
nn
ectors

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

NO
: Go to Ste
p 2.

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

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

Fig. 44: Identifying Special Tool 34 Pin Connector

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 2. Check the TCL switch.
1. Remove the TCL switch. (Refer to TCL SWITCH
).
2. Connect an ohmmeter to the TCL switch between terminals 1 and 2.
3. Check for continuity between terminals 1 and 2 when the TCL switch is
operated.
There is no continuity between terminals 1 and 2 when the TCL
switch is not pressed. There is continuity between terminals 1 and 2 when the TCL switch is
pressed.
Q: Is there no continuity between terminals 1 and 2 when the TCL switch
is not pressed, and is there continuity when the TCL switch is pressed?
YES: Install the TCL switch. (Refer to TCL SWITCH
). Then go to Step 6 .
NO
: Re
place the TCL switch.
(Refer to TCL SWITCH
). Then
go to Ste
p 7 .

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