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Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
6. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC U1073 set?
YES: Go to Step 1.
NO: The procedure is complete.
DTC U1104: SAS CAN TIMEOUT/NOT EQUIPPED CIRCUIT OPERATION The TCL/ASC-ECU and the steering wheel sensor are connected each other via a
CAN bus line, and the sensor sends the steering wheel angle information to the
ECU. TCL/ASC DTC SET CONDITIONS
Current trouble
Connector(s) or wiring harness in the CAN bus lines between the TCL/ASC-
ECU and the steering wheel sensor, the power supply system to the steering
wheel sensor, the steering wheel sensor itself, or the TCL/ASC-ECU may be
defective.
Past trouble
Carry out diagnosis with particular emphasis on connector(s) or wiring harness
in the CAN bus lines between the steering wheel sensor and the TCL/ASC-
ECU, and the power supply system to the steering wheel sensor. For diagnosis
procedures, refer to "HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS
). CAUTION: If DTC U1104 is set in the TCL/ASC-ECU, always
diagnose the CAN bus lines.
CAUTION: Whenever the ECU is replaced, ensure that the CAN
bus lines are normal.
2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor
Page 3421 of 3870

2. Turn the ignition switch to "ON" position.
3. Check if the DTC is set.
Q: Is the check result satisfactory?
YES: The procedure is complete.
NO: Go to Step 1.
DTC U1105: YR/G CAN TIMEOUT/NOT EQUIPPED CIRCUIT OPERATION The TCL/ASC-ECU and the G and yaw rate sensor are connected each other via
CAN bus line, and the sensor sends longitudinal and lateral acceleration
information to the ECU. TCL/ASC DTC SET CONDITIONS
Current trouble
Connector(s) or wiring harness in the CAN bus lines between the TCL/ASC-
ECU and the G and yaw rate sensor, the power supply system to the G and yaw
rate sensor, the G and yaw rate sensor itself, or the TCL/ASC-ECU may be
defective.
Past trouble
Carry out diagnosis with particular emphasis on connector(s) or wiring harness
in the CAN bus lines between the G and yaw rate sensor and the TCL/ASC-
ECU, and the power supply system to the G and yaw rate sensor. For diagnosis
procedures, refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS
). CAUTION: If DTC U1105 is set in the TCL/ASC-ECU, always
diagnose the CAN bus lines.
CAUTION: Whenever the ECU is replaced, ensure that the CAN
bus lines are normal.
2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor
Page 3427 of 3870

CAN bus line. The ECU sends signal to the combination meter, and controls the
TCL/ASC indicator and TCL OFF indicator. TCL/ASC DTC SET CONDITIONS
Current trouble
Connector(s) or wiring harness in the CAN bus lines between the TCL/ASC-
ECU and the combination meter, the power supply system to the combination
meter, the combination meter itself, or the TCL/ASC-ECU may be defective.
Past trouble
Carry out diagnosis with particular emphasis on connector(s) or wiring harness
in the CAN bus lines between the combination meter and the TCL/ASC-ECU,
and the power supply system to the combination meter. For diagnosis
procedures, refer to HOW TO TREAT PAST TROUBLE
).
TROUBLESHOOTING HINTS (The most likely causes for these DTCs are to set are:)
The CAN bus line is defective. Malfunction of the hydraulic unit (integrated with TCL/ASC-ECU) Malfunction of the combination meter
DIAGNOSIS Required Special Tools:
MB991958: Scan Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface
(V.C.I.
) NOTE: For a past trouble, you may not find it by the MUT-III
CAN bus diagnostics even if there is any failure in CAN
bus lines. In this case, Refer to HOW TO COPE WITH
INTERMITTENT MALFUNCTIONS
). and check the CAN
bus lines. You can narrow down the possible cause of
the trouble by referring to the DTC, which is set
regarding the CAN communication-linked ECUs (Refer
to HOW TO DIAGNOSE THE CAN BUS LINE
).
2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor
Page 3438 of 3870

Code
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
6. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC C1551, C1552, C1553, C1554, C1555 or C1608 set?
YES: Replace steering wheel sensor.
NO: The procedure is complete.
DTC U1073: BUS OFF TROUBLE JUDGMENT This code is stored when the steering wheel sensor has ceased the CAN
communication (bus off). Then, if a penalty mode is entered after approximately
five minutes, regular data transmission will be cancelled. TROUBLESHOOTING HINTS (The most likely causes for these DTCs are to set are:)
Damaged wiring harness or connector Malfunction of the hydraulic unit (integrated with TCL/ASC-ECU)
DIAGNOSIS Required Special Tools: CAUTION:
If DTC U1073 is set in the steering wheel sensor,
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 ECU is replaced, ensure that the
communication circuit is normal.
CAUTION: If DTC U1073 has been set, TCL/ASC-ECU related
DTC C1506 is also set. After DTC U1073 has been
diagnosed, don't forget to erase DTC C1506.
2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor
Page 3448 of 3870
Fig. 198: Identifying Connectors: C
-214, C
-215
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
TECHNICAL DESCRIPTION (COMMENT) If the scan tool (MUT-III Sub Assembly) can not communicate with the ABS
system, the CAN bus lines may be defective. If the ABS system does not work, the
TCL/ASC-ECU or its power supply circuit may be defective. TROUBLESHOOTING HINTS (The most likely causes for this case:)
Damaged wiring harness or connector Malfunction of the hydraulic unit (Integrated with TCL/ASC-ECU)
DIAGNOSIS Required Special Tools:
MB991958: Scan Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.)
2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor
Page 3453 of 3870
Fig. 201: Identifying Connectors: C
-214, C
-215
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
TECHNICAL DESCRIPTION (COMMENT) If the scan tool (MUT-III Sub Assembly) can not communicate with the steering
wheel sensor, the CAN bus lines may be defective. If the ASC system does not
work, the steering wheel sensor or its power supply circuit may be defective. TROUBLESHOOTING HINTS (The most likely causes for this case:)
Damaged wiring harness or connector Malfunction of the steering wheel sensor
DIAGNOSIS Required Special Tools:
MB991958: Scan Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface
(V.C.I.
)
2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor
Page 3458 of 3870
Fig. 204: Identifying Connectors: C
-214, C
-215
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CIRCUIT OPERATION
The TCL/ASC-ECU is energized by the ignition switch (IG2) through multi-
purpose fuse 13 and the TCL/ASC-ECU terminal 32. If the power supply to the TCL/ASC-ECU has failed, scan tool MB991958 will
not be able to communicate with it.
TROUBLESHOOTING HINTS (The most likely causes for this case:)
Damaged wiring harness or connector Defective battery Charging system failed Malfunction of the hydraulic unit (integrated with TCL/ASC-ECU)
DIAGNOSIS
2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor
Page 3459 of 3870
Required Special Tools:
MB991958: Scan Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.) MB991827: MUT-III USB Cable MB991910: MUT-III Main Harness A
MB991952: ABS Check Harness
STEP 1. Measure the voltage at TCL/ASC-ECU connector A-32.
1. Disconnect the connector A-32, and connect special tool ABS Check
Harness (MB991952) to the wiring harness-side connector.
2. Turn the ignition switch to the "ON" position.
3. Measure the voltage between terminal 32 and ground. It should measure
approximately 12 volts (battery positive voltage). NOTE: Do not connect special tool ABS Check Harness
(MB991952) to the TCL/ASC-ECU.
2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor