2004 MITSUBISHI ENDEAVOR diagnosis

Fig. 141: Identifying Noise Capacitor (2 Of 2)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
INSPECTION PROCEDURE 14: Noise Appears During Vibration or Shocks. DIAGNOSIS
STEP 1. Check the fit of the mast antenna.
Q: Is the mast antenna base fitted securely?
YES: Go to Step 2.
NO: Install the mast antenna, and tighten the mounting nut (Refer to
INSTALLATION SERVICE POINTS
). Check that there is no noise.
STEP 2. Check the fit of antenna feeder cable.
Q: Is the antenna feeder cable fitted securely?

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Radio With Tape Player & Cd Player - Endeavor

Q: Do the other radio and CD player work normally?
YES: Either repair or replace the original radio and CD player. Check that
there is no noise.
NO: Either repair or replace the antenna assembly. Check that there is no
noise.
INSPECTION PROCEDURE 15: Noise is Present While Moving (FM). DIAGNOSIS
STEP 1. Check the state of the antenna.
Q: Is the mast antenna assembled?
YES: Go to Step 2.
NO: Assemble the mast antenna. Check that there is no noise.
STEP 2. Check the radio after adjusting it.
Q: Readjust the radio. Is the noise eliminated?
YES: Check that there is no noise.
NO: Go to Step 3.
STEP 3. Check with several broad casting. NOTE: Multipath noise and fading noise: Because of the
frequency of FM waves in extremely high, it is highly
susceptible to effects from geological formations and
buildings. These effects disrupt the broadcast signal
and obstruct reception in several ways.
Multipath noise
This describes the echo that occurs when the
broadcast signal is reflected by a large obstruction
and enters the receiver with a slight time delay
relative to the direct signal (repetitious buzzing).

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Radio With Tape Player & Cd Player - Endeavor

STEP 6. Check by replacing radio and CD player.
Q: Do the other radio and CD player work normally?
YES: Either repair or replace the original radio and CD player. Check that
there is no noise.
NO: Either repair or replace the antenna assembly. Check that there is no
noise.
INSPECTION PROCEDURE 16: Constant Noise. DIAGNOSIS Use the Symptom Chart to diagnose the possible cause(s) of the noise. Noise is
often created by the following factors:
Traveling conditions of the vehicle Terrain of area traveled through Surrounding buildings Signal conditions Time period
If there are still problems with noise, even after performing inspection procedures 8
to 15, obtain information on the factors listed above. Determine whether the
problem occurs on AM or FM, the station names, frequencies, etc. and contact the
radio manufacturer's service center.
INSPECTION PROCEDURE 17: No Reception (AM). DIAGNOSIS
STEP 1. Check the state of the antenna.
Q: Is the mast antenna assembled?
YES: Go to Step 2.
NO: Assemble the mast antenna. The radio should sound normally.
STEP 2. Check to see if inspections are taking place is an area exposed to

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Radio With Tape Player & Cd Player - Endeavor

NO: Either repair or replace the antenna assembly. The radio should
sound normally.
INSPECTION PROCEDURE 18: Poor Reception. DIAGNOSIS
STEP 1. Check the state of the antenna.
Q: Is the mast antenna assembled?
YES: Go to Step 2.
NO: Assemble the mast antenna. Check that a poor reception is resolved.
STEP 2. Check to see if inspections are taking place is an area exposed to
special electric fields.
Q: Are inspections taking place under special electric field conditions
(underground garage, inside a building, etc.)?
YES: Go to Step 3.
NO: Go to Step 4 .
STEP 3. Move the vehicle and check the radio.
Move the vehicle to a good reception area that is not exposed to special electric
fields.
Q: Is reception of the strongest radio frequency possible within the area?
YES: Check that a poor reception is resolved.
NO: Go to Step 4.
STEP 4. Tune the radio, and then check it.
Q: Did the sensitivity improve after tuning?
YES: Check that a poor reception is resolved.
NO: Go to Step 5.
STEP 5. Check with several broadcastin
g stations
.

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Radio With Tape Player & Cd Player - Endeavor

reception is resolved.
INSPECTION PROCEDURE 19: Distortion on AM and/or FM. DIAGNOSIS
STEP 1. Check the level of distortion.
Q: How much distortion is there?
Occasional distortion : Go to Step 2.
Constant distortion : Go to Step 3 .
STEP 2. Check the location of the distortion.
Q: Is there distortion when the vehicle is near the radio station?
YES: The antenna is receiving too strong a signal.
NO: Go to Step 3.
STEP 3. Check the wires at each speaker.
Q: Are the speaker wires contacting the paper speaker cone?
YES: Move the speaker wires away from the paper speaker cone. The
speaker should now be free of distortion.
NO: Go to Step 4.
STEP 4. Remove the speakers, and check the paper cone for foreign
material or damage.
Q: Is there foreign material or damage on the paper cone of the speaker?
YES: Repair or replace the speakers. The speaker should now be free of
distortion.
NO: Go to Step 5.
STEP 5. Check for distortion with the speaker installed.
Q: Does a distortion occur?

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Radio With Tape Player & Cd Player - Endeavor

YES: Install the speaker securely. The speaker should now be free of
distortion.
NO: Repair or replace the radio and CD player. The speaker should now
be free of distortion.
INSPECTION PROCEDURE 20: Distortion on FM Only. DIAGNOSIS
STEP 1. Check that the distortion is present when the radio is tuned to
another station.
Q: Does the distortion persist when the radio is tuned to another station?
YES: Go to Step 2.
NO: The signal from that station is too weak.
STEP 2. Relocate the reception area and check the radio.
Q: When relocating the reception area does the distortion increase or
decrease?
YES: The cause may be multipath or fading noise. Multipath noise is the
echo that occurs when the broadcast signal is reflected by a large
obstruction and enters the receiver with a slight time delay relative to the
direct signal (repetitious buzzing). A fading or buzzing noise may occur
when the broadcast beam is disrupted by obstructing objects and the signal
strength fluctuates within a narrow range.
NO: Replace the radio and CD player. Check that a distortion is resolved.
INSPECTION PROCEDURE 21: Auto Select Function Inoperative, too Few Automatic Stations are Selected. DIAGNOSIS
STEP 1. Check the state of the antenna.
Q: Is the mast antenna assembled?
YES: Go to Step 2.

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Radio With Tape Player & Cd Player - Endeavor

Fig. 145: Identifying Connectors

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CIRCUIT OPERATION Power is continuously supplied to the radio and CD player. TECHNICAL DESCRIPTION (COMMENT) The cause is probably a faulty radio and CD player memory backup power supply
system circuit. TROUBLESHOOTING HINTS
Damaged wiring harness or connector Malfunction of the radio and CD player
DIAGNOSIS Required Special Tool:
MB991223: Harness set
STEP 1. Measure at radio and CD player or radio, CD player and CD
changer connector C-105 in order to check the power supply circuit to the
radio and CD player (through the battery).
1. Disconnect radio and CD player or radio, CD player and CD changer
connector
C-105, and measure at the wirin
g harness side.

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Radio With Tape Player & Cd Player - Endeavor

Q: Is the wiring harness between radio and CD player or radio, CD player
and CD changer connector C-105 (terminal 21) and the battery in good
condition?
YES: Repair or replace the radio and CD player or radio, CD player and
CD changer. Check that a memory is retained.
NO: Repair the wiring harness. Check that a memory is retained.
INSPECTION PROCEDURE 23: CD can not be Inserted. DIAGNOSIS
STEP 1. Check that a CD has been already loaded.
Q: Has a CD been already loaded?
YES: Take out the CD (If the CD can not be ejected, refer to
INSPECTION PROCEDURE 27
). Check that a CD can be inserted.
NO: Go to Step 2.
STEP 2. Check how a CD is inserted.
Ensure that the ignition switch is at 'ACC' or 'ON'.
Q: If you try to load the CD, does the CD stops halfway and then rejected?
YES: Refer to INSPECTION PROCEDURE 27
.
NO: Go to Step 3.
STEP 3. Check after the CD is loaded.
NOTE: If you try to load a CD when the ignition switch is at the
positions other than 'ACC' or 'ON,' the CD will not be
inserted completely and then rejected.
NOTE: Even though the CD is loaded, 'E01' (vehicles with
center display low type) or 'ERROR 01' (vehicles with
center display middle type) sometimes displayed with
the CD rejected because of vibration/shock or dew on

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Radio With Tape Player & Cd Player - Endeavor