2004 MITSUBISHI ENDEAVOR diagnosis

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.
6. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC C1860 or C1861 set?
YES: Go to Step 1 .
NO: The procedure is complete.
DTC U1073: Bus off TROUBLE JUDGMENT This code is stored when the ABS-ECU 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 ABS-ECU)
DIAGNOSIS 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 CAUTION:
If DTC U1073 is set in the ABS-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 ECU is replaced, ensure that the
communication circuit is normal.

2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor

2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line.
4. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?
YES: Go to Step 2.
NO: Repair the CAN bus line (Refer to DIAGNOSIS
, or DIAGNOSIS <
VEHICLES WITHOUT ADVANCED AIR BAG
). Then go to step 2.
STEP 2. Recheck for diagnostic trouble code.
Check again if the DTC is set.
1. Turn the ignition switch to the "ON" position.
2. Erase the DTC.
3. Turn the ignition switch to the "LOCK" (OFF) position.
4. Turn the ignition switch to the "ON" position.
5. Check if the DTC is set.

2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor

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.
SYMPTOM CHART NOTE: For vehicle with TCL/ASC, refer to SYMTOM CHART
.
CAUTION: During diagnosis, a DTC code associated with other
system may be set when the ignition switch is turned
on with connector(s) disconnected. On completion,
confirm all systems for DTC code(s). If DTC code(s)
are set, erase them all.
NOTE: If steering movements are made when driving at high
speed, or when driving on road surfaces with low frictional
resistance, or when passing over bumps, the ABS may
operate although sudden braking is not being applied.
Because of this, when getting information from the
customer, check if the problem occurred while driving
under such conditions as these.
NOTE: During ABS operation, the brake pedal may vibrate a little
or may not be able to be pressed. Such conditions are due
to intermittent changes in hydraulic pressure inside the
brake line to prevent the wheels from locking. This is
normal.

2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor

Fig. 123: Identifying Connectors: C
-121, 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
ABS-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 ABS-ECU)
DIAGNOSIS 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
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 connecting or

2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line.
Q: Is the check result satisfactory?
YES: Check and repair the power supply circuit system (Refer to
INSPECTION PROCEDURE 2: POWER SUPPLY CIRCUIT
SYSTEM
).
NO: Repair the CAN bus lines (Refer to DIAGNOSTIC TROUBLE
CODE DIAGNOSIS
or DIAGNOSIS < VEHICLES WITHOUT
ADVANCED AIR BAG
).
INSPECTION PROCEDURE 2: POWER SUPPLY CIRCUIT SYSTEM
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor

Fig. 126: Identifying Connectors: C
-214, C
-215

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CIRCUIT OPERATION
The ABS-ECU is energized by the ignition switch (IG2) through multi-purpose
fuse 13 and the ABS-ECU terminal 20. If the power supply to the ABS-ECU has failed, scan tool (MUT-III Sub
Assembly) 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 ABS-ECU)
DIAGNOSIS
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor

Fig. 134: EBO And ABS Warning Light Circuit Diagram

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Fig. 135: Identifying Connectors: A
-02, C
-04, C
-31, C
-101, C
-102, C
-103, C
-
211, C
-215

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
TECHNICAL DESCRIPTION (COMMENT)
The ABS-ECU sends the ABS warning light and the brake warning light
signals to the combination meter via the CAN communication. This may be caused by faults in the CAN bus line, the combination meter or
the ABS-ECU.
TROUBLESHOOTING HINTS (THE MOST LIKELY CAUSES FOR THIS CASE:)
Damaged wiring harness or connector Combination meter defect Malfunction of the hydraulic unit (integrated with ABS-ECU)
DIAGNOSIS
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor

2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line.
Q: Is the check result satisfactory?
YES: Go to Step 2.
NO: Repair the CAN bus lines (Refer to DIAGNOSTIC TROUBLE
CODE DIAGNOSIS
or DIAGNOSIS < VEHICLES WITHOUT
ADVANCED AIR BAG
). Repair the CAN bus lines, and then go to Step
2.
STEP 2. Using scan tool MB991958, read the combination meter
diagnostic trouble code.
Use scan tool MB991958 to check whether combination meter DTC U1102 has
been set.
1. Connect scan tool MB991958 to the data link connec
tor. 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 Anti-Lock Braking System (ABS) - Endeavor