2004 MITSUBISHI ENDEAVOR diagnosis

Fig. 2: Rear Suspension Construction Diagram (AWD)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
REAR SUSPENSION DIAGNOSIS INTRODUCTION TO REAR SUSPENSION DIAGNOSIS If the rear suspension is faulty, the vehicle will not run straightforward or noise will
occur. Incorrect wheel alignment, malfunction of shock absorber, stabilizer bar, coil
spring, control arms or worn or out-of-balance will cause these problems. REAR SUSPENSION DIAGNOSTIC TROUBLESHOOTING STRATEGY 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 a rear
suspension fault.
1. Gather information from the customer.
2. Verify that the condition described by the customer exists.
3. Find the malfunction by following the Symptom Chart.
4. Verif
y malfunction is eliminated.

2004 Mitsubishi Endeavor LS 2004 SUSPENSION Rear - Endeavor

SYMPTOM CHART Fig. 3: Symptom Chart

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
SYMPTOM PROCEDURES INSPECTION PROCEDURE 1: Squeaks or other Abnormal Noise DIAGNOSIS
STEP 1. Check for loose rear suspension installation bolts and nuts.
Q: Are the rear suspension installation bolts and nuts loose?
YES: Retighten them, then go to Step 5 .
NO: Go to Step 2.
STEP 2. Check the malfunction of shock absorbers (worn bushings).
Q: Are the shock absorbers (bushings) in good condition?
YES: Go to Step 3.
NO: Replace the faulty part, then go to Step 5 .
STEP 3. Check the upper arms and/or lower arms and/or toe control arms
for deformity or damage.
Q: Are the u
pp
er arms and/or lower arms and/or toe control arms in
good
condition?
YES: Go to Step 4.
NO: Re
place the fault
y part, then
go to Ste
p 5 .

2004 Mitsubishi Endeavor LS 2004 SUSPENSION Rear - Endeavor

STEP 4. Check the trailing arms for deformity or damage.
Q: Are the trailing arms in good condition?
YES: Go to Step 5.
NO: Replace the faulty part, then go to Step 5.
STEP 5. Retest the system.
Q: Is the malfunction eliminated?
YES: The procedure is complete.
NO: Return to Step 1 .
INSPECTION PROCEDURE 2: Poor Ride DIAGNOSIS
STEP 1. Check the excessive tire inflation pressure.
Refer to GROUP 31, On-vehicle Service - Tire Inflation Pressure Check P.31-
69.
Q: Is the tire inflation pressure in good condition?
YES: Go to Step 2.
NO: Adjust the pressure, then go to Step 4 .
STEP 2. Check for malfunction of shock absorbers (weak or broken
springs).
Q: Are the shock absorbers in good condition?
YES: Go to Step 3.
NO: Replace the faulty part, then go to Step 4 .
STEP 3. Check the stabilizer bar and/or stabilizer bar links for deformity
or damage.
Q: Are the stabilizer bar and/or stabilizer bar link deformed or damaged?

2004 Mitsubishi Endeavor LS 2004 SUSPENSION Rear - Endeavor

YES: Replace the faulty part, then go to Step 4.
NO: Go to Step 4.
STEP 4. Retest the system.
Q: Is the malfunction eliminated?
YES: The procedure is complete.
NO: Return to Step 1 .
INSPECTION PROCEDURE 3: Body Tilting DIAGNOSIS
STEP 1. Check for weak or deteriorated bushings.
Q: Are the bushings in good condition?
YES: Go to Step 2.
NO: Replace the faulty part, then go to Step 5 .
STEP 2. Check for weak or broken springs.
Q: Are the springs in good condition?
YES: Go to Step 3.
NO: Replace the faulty part, then go to Step 5 .
STEP 3. Check the u
pp
er arms and/or lower arms and/or toe control arms
for deformity or damage.
Q: Are the upper arms and/or lower arms and/or toe control arms
deformed or damaged?
YES: Replace the faulty part, then go to Step 5 .
NO: Go to Step 4.
STEP 4. Check the trailing arms for deformity or damage.
Q: Are the trailing arms deformed or damaged?

2004 Mitsubishi Endeavor LS 2004 SUSPENSION Rear - Endeavor

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
STEERING WHEEL SENSOR
This sensor is mounted behind the column switch, and detects the steering
wheel position. The steering wheel sensor has a self-diagnosis function and a memory
function. If the diagnosis function finds a trouble, it sends a DTC code to the
TCL/ASC-ECU. Then the ECU will illuminate the TCL/ASC indicator light.
Fig. 4: Identifying Steering Wheel Sensor

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
TRACTION CONTROL OFF SWITCH
NOTE: For the details of the DTC codes, refer to DIAGNOSTIC
TROUBLE CODE CHART
.

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor

Fig. 30: Status Of Operation Valve Specificatio
n
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
TRACTION CONTROL SYSTEM OPERATION The TCL/ASC-ECU receives information from the PCM, the G and yaw-rate
sensor, and the wheel speed sensor. If the ECU determines that a road wheel is
spinning, it will control the fluid pressure to the spinning wheel to apply torque to
the other road wheels. The operations of the ABS solenoid valves and the active
skid control system valves are the same as for the active skid control system.
Furthermore, the system also controls the engine if the accelerator pedal is
depressed excessively. TCL/ASC DIAGNOSIS INTRODUCTION TO TRACTION CONTROL/ACTIVE SKID CONTROL SYSTEM DIAGNOSIS The traction control/active skid control system (TCL/ASC) is a system that has
added the cut valve and suction valve to the conventional ABS system. These
valves are used to control each of the road wheels independently. These differences
include sounds, sensations, and vehicle performance that owners and service
technicians who are not familiar with TCL/ASC may not be used to.
Some operational characteristics may seem to be malfunctions, but they are simply
signs of normal TCL/ASC operation. When diagnosing the TCL/ASC system, keep
these operational characteristics in mind. Inform the owner of the kind of
performance characteristics to expect from an TCL/ASC-equipped vehicle. TCL/ASC Diagnostic Trouble Code Detection Conditions TCL/ASC diagnostic trouble codes (TCL/ASC DTCs) are set under different
conditions, depending on the malfunction detected. Most TCL/ASC DTCs will only
be set during vehicle operation. Some TCL/ASC DTCs will also be set during the
TCL/ASC self-check immediatel
y after the en
gine is started.
NOTE: *: When the ASC is operating while the brake pedal is
depressed, the suction valve turns on and off according to
the brake fluid amount supplied to the buffer chamber.
2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor

When you check if an TCL/ASC DTC will be displayed again after the DTC has
been erased, you should duplicate the TCL/ASC DTC set conditions. Depending on
the detection timing and set conditions for the specific TCL/ASC 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 "TCL/ASC DTC SET CONDITIONS
" for
each TCL/ASC DTC that you are trying to reset.
TCL/ASC DIAGNOSTIC TROUBLESHOOTING STRATEGY 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 TCL/ASC
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 TCL/ASC DTC.
4. If you cannot verify the condition and there are no TCL/ASC DTCs, the
malfunction is intermittent. Refer to HOW TO COPE WITH
INTERMITTENT MALFUNCTIONS
.
5. If you can verify the condition but there are no TCL/ASC 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 TCL/ASC DTC, record the number of the DTC, then erase the
DTC from the memory using the scan tool.
7. Duplicate the TCL/ASC DTC set conditions to see if the same TCL/ASC DTC
will set again.
If the same TCL/ASC DTC sets again or the TCL/ASC DTC cannot be
erased, perform the diagnostic procedures for the DTC. Refer to
DIAGNOSTIC TROUBLE CODE CHART
.
If you cannot
get the same TCL/ASC DTC to set a
gain, the malfunction is

2004 Mitsubishi Endeavor LS
2004 BRAKES Traction Control, Active Skid Control System - Endeavor

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
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/ASC/ASTC" and "STEERING ANGLE SENSOR" 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 Traction Control, Active Skid Control System - Endeavor