2004 MITSUBISHI ENDEAVOR ECU

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. Check whether combination meter DTC U1102 has been set.
Q: Is combination meter DTC U1102 set?
YES: Replace the hydraulic unit (integrated with ABS-ECU)
NO: Replace the combination meter.
INSPECTION PROCEDURE 5: FAULTY ABS OPERATION TECHNICAL DESCRIPTION (COMMENT) The cause depends on driving and road surface conditions, so diagnosis may be
difficult. However, if no diagnostic trouble code is displayed, carry out the
following inspection. TROUBLESHOOTING HINTS (THE MOST LIKELY CAUSES FOR THIS CASE:)
Malfunction of the hydraulic unit
DIAGNOSIS Check the hydraulic unit (Refer to POINTS IN WAVEFORM MEASUREMENT
). If the hydraulic unit (integrated with ABS-ECU) is
malfunctioning, replace it. Then check that the malfunction symptom is eliminated.
STEP 1. Hydraulic unit check
Refer to POINTS IN WAVEFORM MEASUREMENT
.
Q: Is the hydraulic unit normal?
YES: Go to Step 2.
NO: Connect the brake pipes correctly, repair the external brake lines, or
replace the hydraulic unit.
STEP 2. Verify that the condition described by the customer exists.
Q: Can any faults be found with the brake operation?

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

YES: Check the brake system related components except the ABS system.
NO: The procedure is complete.
DATA LIST REFERENCE TABLE The following items can be read by the scan tool from the ABS-ECU input data.
Fig. 138: Data List Reference Table

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ACTUATOR TEST REFERENCE TABLE The scan tool activates the following actuators for testing. ACTUATOR TEST SPECIFICATIONS NOTE: If the ABS-ECU runs down, actuator testing cannot be
carried out.
NOTE: Actuator testing is only possible when the vehicle is
stationary.
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor

Fig. 140: Actuator Test Specifications

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

TERMINAL VOLTAGE CHECK CHART Required Special Tool:
MB991970: ABS Check Harness
1. Disconnect the ABS-ECU connector A-02, and then use special tool
MB991970 to measure the voltages between terminals (2) and each terminal
other than terminal (18) as well as between terminal (18) and each terminal
other than terminal
(2). NOTE: For vehicles with ASC, refer to TCL/ASC DIAGNOSIS
.

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

Fig. 141: Checking Terminal Voltage

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. The terminal layouts are shown in the illustrations below.
Fig. 142: Signal Specification

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RESISTANCE AND CONTINUITY BETWEEN HARNESS-SIDE CONNECTOR TERMINALS 1. Disconnect the connector A-02, and connect special tool ABS Check Harness
(MB991970) to the wiring harness-side connector.
2. Measure the resistance and continuity between the terminals indicated in the
table below. NOTE: Do not measure terminal voltage for approximately three
seconds after the ignition switch is turned "ON." The ABS-
ECU performs the initial check during that period.
NOTE: Do not connect special tool ABS Check Harness
(MB991970) to the ABS-ECU.

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

Fig. 146: Identifying Special Tools (2 Of 2)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
ON-VEHICLE SERVICE ABS SENSOR OUTPUT VOLTAGE MEASUREMENT Required Special Tool:
MB991219: Inspection Harness
1. Release the parking brake and lift up the vehicle.
2. Disconnect the ABS-ECU connector A-02, and then use special tool
MB991219 to measure the out
put volta
ge at the harness side connector.
NOTE: For vehicles with ASC, refer to WHEEL SPEED SENSOR
OUTPUT VOLTAGE MEASUREMENT
.

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

Fig. 147: Disconnecting ABS
-ECU Connector A
-02
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

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