Page 1644 of 3870

change on the voltage. You can switch on/off the audio unit, control the mode
and volume by the remote controlled radio switch (RH). You can select a CD
track and pre-set radio station, and tune it by the remote controlled radio switch
(LH).
TECHNICAL DESCRIPTION (COMMENT) If the system does not recognize the remote controlled radio switches (RH), the
clock spring or the radio, CD player and CD changer may be defective. TROUBLESHOOTING HINTS
Malfunction of the remote controlled radio switch (RH) Malfunction of the radio, CD player and CD changer Malfunction of the clock spring Damaged wiring harness or connectors
DIAGNOSIS Required Special Tool:
MB991223: Harness set
STEP 1. Measure the voltage at remote controlled radio switch power
supply circuit at the clock spring connector C-306.
1. Disconnect the clock s
prin
g connector
C-306.
NOTE: You can switch on the audio unit by the remote controlled
switch, but can not switch it off.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Radio With Tape Player & Cd Player - Endeavor
Page 1808 of 3870
Check the power of ignition switch "ACC"
.
Q: Does the radio and CD player power turn ON when the ignition switch is in
the "ACC" or "ON" position?
YES: Either replace the audio. Check that a CD can be ejected normally.
NO: Check the memory backup power supply circuit. Refer to INSPECTION
PROCEDURE 1
.
ON-VEHICLE SERVICE SPEAKER TEST < VEHICLES WITH SEVEN SPEAKERS > Operate the radio panel switches to test the speakers. The middle grade type multi-
center display shows which speaker is sounding. Enter the speaker test mode
according to the following steps:
1. Turn the ignition switch to "ACC" position and switch off the audio
2. Press the following buttons in that order within 60 seconds from step (1).
1. Memory select "1" button
2. "SEEK" switch (down side)
3. "SEEK" switch (up side)
4. Memor
y select "6" button
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Radio With Tape Player & Cd Player - Endeavor
Page 1997 of 3870

2004 HVAC
Heater Air Conditioning, Ventilation - Endeavor
GENERAL DESCRIPTION The heater and cooling units are combined in a single unit, which, with the mode
film damper and flow rate control valve in the heater unit, reduces ventilation
resistance, increases fan power, and decreases noise.
GENERAL SPECIFICATION SAFETY PRECAUTIONS Because R-134a refrigerant is a hydro fluorocarbon (HFC) which contains
hydrogen atoms in place of chlorine atoms, it will not cause damage to the ozone
layer.
Ozone filters out harmful radiation from the sun. To assist in protecting the ozone
layer, Mitsubishi Motors Corporation recommends an R-134a refrigerant recycling
device.
Refrigerant R-134a is transparent and colorless in both the liquid and vapor state.
Since it has a boiling point of -29.8°C (-21.64°F) at atmospheric pressure, it will be
a vapor at all normal temperatures and pressures. The vapor is heavier than air, non-
flammable, and non-explosive. The following precautions must be observed when
handlin
g R-134a.
ITEM
SPECIFICATION
Heater control assembly
Dial type
Compressor
MSC105CA
Compressor Model
Scroll type
Refrigerant and quantity g
(oz)
R-134a (HFC-134a), Approximately 560 - 600
(19.75 - 21.16)
WARNING:Wear safety goggles and gloves when servicing the
refrigeration system to prevent severe damage to
eyes and hands.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
Page 1999 of 3870

When metering R-134a into the refrigeration system, keep the supply tank or cans
in an upright position. If the refrigerant container is on its side or upside down,
liquid refrigerant will enter the system and damage the compressor.
Refrigerant will tarnish bright metal and chrome surfaces, and in combination with
moisture can severely corrode all metal surfaces. OPERATION CONDENSER FAN AND RADIATOR FAN CONTROL For the operation of each fan, refer to
SYMPTOM CHART
.
COMPRESSOR CONTROL WHEN OPERATING THE AIR CONDITIONING SWITCH
The air thermo sensor, which senses the temperature of the air flowing out of
the evaporator, deactivates the compressor at 3°C (37.4°F) or below. The dual pressure switch turns OFF when the refrigerant pressure becomes
excessively high or low, thus protecting the compressor circuit. When the air thermo sensor is activated, and the ignition switch, blower switch,
and air conditioning switch are ON, the A/C compressor clutch relay is
energized.
WHEN OPERATING THE MODE SELECTION DIAL
The air conditioning will work when the mode selection dial is set to the
"Defroster" or "Defroster/foot" position, or the temperature control dial is set to
the "MAX A/C" position. In other dial positions, when the air conditioning
switch is turned on, the air conditioning will work.
A/C COMPRESSOR CLUTCH RELAY ON CONDITIONS
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
Page 2419 of 3870

2004 HVAC
Automatic Air Conditioning - Endeavor
GENERAL DESCRIPTION For the heater and air conditioning system, the heater and cooling units are
combined in a single unit, which, with the a mode film damper and flow rate control
valve in the heater unit, reduces ventilation resistance, increases fan power, and
decreases noise. AUTOMATIC AIR CONDITIONING GENERAL DESCRIPTION
SAFETY PRECAUTIONS Because R-134a refrigerant is a hydro fluorocarbon (HFC) which contains
hydrogen atoms in place of chlorine atoms, it will not cause damage to the ozone
layer.
Ozone filters out harmful radiation from the sun. To assist in protecting the ozone
layer, Mitsubishi Motors Corporation recommends an R-134a refrigerant recycling
device.
Refrigerant R-134a is transparent and colorless in both the liquid and vapor state.
Since it has a boiling point of -29.8°C (-21.64°F) at atmospheric pressure, it will be
a vapor at all normal temperatures and pressures. The vapor is heavier than air, non-
flammable, and no
n-ex
plosive. The followin
g precautions must be observed when
ITEM
SPECIFICATION
Heater control assembly
dial type
Compressor
MSC105CA
Compressor Model
Scroll type
Refrigerant and quantity g
(oz)
R-134a (HFC-134a), Approximately 560 - 600
(19.75 - 21.16)
WARNING:Wear safety goggles and gloves when servicing the
refrigeration system to prevent severe damage to
eyes and hands.
2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor
2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor
Page 2421 of 3870

When metering R-134a into the refrigeration system, keep the supply tank or cans
in an upright position. If the refrigerant container is on its side or upside down,
liquid refrigerant will enter the system and damage the compressor.
Refrigerant will tarnish bright metal and chrome surfaces, and in combination with
moisture can severely corrode all metal surfaces. OPERATION CONDENSER FAN AND RADIATOR FAN CONTROL
For the operation of each fan, refer to
SYMPTOM PROCEDURES
.
COMPRESSOR CONTROL WHEN OPERATING THE AIR CONDITIONING SWITCH
The air thermo sensor, which senses the temperature of the air flowing out of
the evaporator, deactivates the compressor at 3°C (37.4°F) or below. The dual pressure switch turns OFF when the refrigerant pressure becomes
excessively high or low, thus protecting the compressor circuit. When the air thermo sensor is activated, and the ignition switch, blower switch,
and air conditioning switch are ON, the A/C compressor clutch relay is
energized.
WHEN OPERATING THE MODE SELECTION DIAL
The air conditioning will work when the mode selection dial is set to the
"Defroster" or "Defroster/foot" position or the temperature control dial is set to
the "MAX A/C" position. In other dial positions, when the air conditioning
switch is turned on, the air conditioning will work.
A/C COMPRESSOR CLUTCH RELAY ON CONDITION
or it will be stained.
2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor
Page 2660 of 3870
If the scan tool is not available, new key(s) can be registered by operating two keys
which have been registered to the vehicle (A maximum of eight keys can be
registered to one vehicle). Follow the procedure below to register new key(s) to the
vehicle.
1. Turn "ON" the ignition switch by using the first registered key (key A), and
wait for five seconds.
2. Remove the first registered key (key A).
3. Insert the second registered ignition key (key B), and turn it to the ON position.
4. After approximately 10 seconds the immobilizer indicator will start blinking,
and then additional registration mode is entered.
5. Check the immobilizer indicator starts blinking, and then remove the second
re
gistered ke
y (key B).
NOTE: The registered key is the key that allows you to start the
engine.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor
Page 2662 of 3870

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
8. If a new ignition key is registered further, repeat steps 1 to 7 above.
A maximum of eight ignition keys can be registered to one vehicle (If you
attempt to register the ninth key, the immobilizer-ECU rejects the key). If any
of the following conditions are satisfied, the additional key registration mode
will terminate:
The immobilizer indicator starts blinking for more than 30 seconds. After the ignition key has been turned to the "LOCK" (OFF), the engine
control relay is turned off. The scan tool has started communicating with vehicle systems.
9. After the registration mode has terminated, the additionally registered key(s)
should allow you to start the engine.
TRANSPONDER LOCK CHECK 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 (Vehicles with CAN
communication system)
Follow the procedure below to judge if the ignition key can be overwritten (i.e. the
ignition key is correct) or not.
1. Connect the scan tool MB991958 to the data link connector. CAUTION: To prevent damage to scan tool MB991958, always
turn the ignition switch to "LOCK" (OFF) position
before connecting or disconnecting scan tool
MB991958.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor