MITSUBISHI ENDEAVOR 2004 Service Repair Manual

2004 BRAKES
Anti-Lock Braking System (ABS) - Endeavor
GENERAL DESCRIPTION FEATURES The 4ABS ensures directional stability and control during hard braking.
This ABS uses a 4-sensor 4-channel system that controls all four wheels
independently of each other. The basic system is the same as that for the Lancer.
EBD (Electronic Brake-force Distribution system) control has been installed to
provide the ideal braking force for the rear wheels.
EBD CONTROL In ABS, electronic control is used so the rear wheel brake hydraulic pressure during
braking is regulated by rear wheel control solenoid valves in accordance with the
vehicle's rate of deceleration. The front and rear wheel slippages are calculated from
the signals received from the various wheel sensors. EBD control is a control
system which provides a high level of control for both vehicle braking force and
vehicle stability. The system has the following features:
To shorten the harness wires and enhance data transmission reliability,
communication with other ECU is performed over a CAN (Controller Area
Network). Fail-safe function ensures that safety is maintained. Diagnostic function provides improved serviceability. Because the system provides the optimum rear wheel braking force regardless
of vehicle load and the condition of the road surface, the system reduces the
required pedal depression force, particularly when the vehicle is heavily
loaded. Because the duty placed on the front brakes is reduced, the increases in pad
temperature can be controlled during front brake application to improve pad
wear.

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


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

Control valves such as the proportioning valve are not required.
CONSTRUCTION DIAGRAM Fig. 1: Locating Anti Lock Brake Components

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.NOTE: On vehicles with ASC, the ABS system is controlled by the
TCL/ASC-ECU. For the system construction, refer to
GENERAL INFORMATION
.

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

Fig. 2: Anti Lock Brake Component Legend

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
SYSTEM CHECK SOUND When starting the engine, a thudding sound can sometimes be heard coming from
the engine compartment. This is a normal sound during the ABS self-check. ABS OPERATION SOUNDS AND SENSATIONS During normal operation, the ABS makes several sounds that may seem unusual at
first:
A whining sound is caused by the ABS hydraulic unit motor. When pressure is applied to the brake pedal, the pulsation of the pedal causes a
scraping sound. When the brakes are applied firmly, the ABS operates, rapidly applying and
releasing the brakes many times per second. This repeated application and
release of braking forces can cause the suspension to make a thumping sound
and the tires to s
queak.

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

LONG STOPPING DISTANCES ON LOOSE ROAD SURFACESWhen braking on loose surfaces like snow-covered or gravel roads, the stopping
distance can be longer for an ABS-equipped vehicle than the stopping distance for a
vehicle with a conventional brake system. SHOCK AT STARTING CHECK Shock may be felt when the brake pedal is lightly pressed while driving at a low
speed. This is a normal characteristic because the ABS system operation check is
carried out when vehicle speed is 8 km/h (5 mph) or less. ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS INTRODUCTION TO ANTI-LOCK BRAKING SYSTEM DIAGNOSIS The anti-lock braking system (ABS) operates differently from conventional brake
systems. These differences include sounds, sensations, and vehicle performance that
owners and service technicians who are not familiar with ABS may not be used to.
Some operational characteristics may seem to be malfunctions, but they are simply
signs of normal ABS operation. When diagnosing the ABS system, keep these
operational characteristics in mind. Inform the owner of the kind of performance
characteristics to expect from an ABS-equipped vehicle. ABS DIAGNOSTIC TROUBLE CODE DETECTION CONDITIONS ABS diagnostic trouble codes (ABS DTCs) are set under different conditions,
depending on the malfunction detected. Most ABS DTCs will only be set during
vehicle operation. Some ABS DTCs will also be set during the ABS self-check
immediately after the engine is started.
When you check if an ABS DTC will be displayed again after the DTC has been
erased, you should duplicate the ABS DTC set conditions. Depending on the
detection timing and set conditions for the specific ABS DTC, you must either drive
the vehicle or turn the engine off and restart it. To set the proper conditions for that
DTC again, refer to ABS DTC SET CONDITIONS
for each ABS DTC that you
are trying to reset.
ABS DIAGNOSTIC TROUBLESHOOTING STRATEGY
2004 Mitsubishi Endeavor LS
2004 BRAKES Anti-Lock Braking System (ABS) - Endeavor

Use these steps to plan your diagnostic strategy. If you follow them carefully, you
will be sure that you have exhausted most of the possible ways to find an ABS fault.
1. Gather information about the problem from the customer.
2. Verify that the condition described by the customer exists.
3. Check the vehicle for any ABS DTC.
4. If you cannot verify the condition and there are no ABS DTCs, the malfunction
is intermittent. Refer to HOW TO COPE WITH INTERMITTENT
MALFUNCTIONS
.
5. If you can verify the condition but there are no ABS DTCs, or the system
cannot communicate with the scan tool, check that the basic brake system is
operating properly.
If the basic brake system is not operating properly, refer to the BASIC BRAKE SYSTEM DIAGNOSIS
.
If the basic brake system is operating properly, refer to SYMPTOM CHART
.
6. If there is an ABS DTC, record the number of the DTC, then erase the DTC
from the memory using the scan tool.
7. Duplicate the ABS DTC set conditions to see if the same ABS DTC will set
again.
If the same ABS DTC sets again or the ABS DTC cannot be erased,
perform the diagnostic procedures for the DTC. Refer to HOW TO DIAGNOSE THE CAN BUS LINE
.
If you cannot get the same ABS DTC to set again, the malfunction is
intermittent. Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS
.
DIAGNOSTIC FUNCTION ON-BOARD DIAGNOSTICS If the ABS-ECU detects any problem in the CAN communication line or the ECUs,
which the ABS-ECU is communicating with, it stores a diagnostic trouble code.
The DTCs have 27 items. The DTCs can be confirmed by connecting scan tool
MB991958
(MUT-III sub assembl
y.) The stored DTCs are not erased even after the

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

ignition switch has been turned to the LOCK (OFF) position, or the battery has been
disconnected. The DTCs can be erased by operating scan tool MB991958 (MUT-III
sub assembly.) HOW TO CONNECT THE SCAN TOOL (MUT-III) 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
1. Ensure that the ignition switch is at the "LOCK" (OFF) position.
2. Start up the personal computer.
3. Connect special tool MB991827 to special tool MB991824 and the personal
computer. 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

Fig. 3: Connecting Special Tool To Data Link Connector

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

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
4. Connect special tool MB991910 to the V.C.I.
5. Connect special tool to the data link connector.
6. Turn the V.C.I. power switch to the "ON" position.
7. Start the MUT-III system on the personal computer.
HOW TO READ AND ERASE DIAGNOSTIC TROUBLE CODES 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
1. Connect scan tool MB991958 to the data link connec
tor. NOTE: When the V.C.I. is energized, the V.C.I. indicator light
will be illuminated in a green color.
NOTE: Disconnect the scan tool in the reverse order of the
connecting sequence, making sure that the ignition
switch is at the "LOCK" (OFF) position.
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.
NOTE: If the battery voltage is low, diagnostic trouble codes will
not be set. Check the battery if scan tool MB991958 does
not display.

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

Fig. 4: Connecting Scan Tool MB991958 To Data Link Connector

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

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

2. Turn the ignition switch to the "ON" position.
3. Select "Interactive Diagnosis" from the start-up screen.
4. Select "System Select."
5. Choose "ABS" from the "CHASSIS" tab.
6. Select "MITSUBISHI."
7. Select "Diagnostic Trouble Code."
8. If a DTC is set, it is shown.
9. Choose "DTC erase" to erase the DTC. HOW TO READ DATA LIST 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
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