2004 MITSUBISHI ENDEAVOR ignition

2. Turn the ignition switch to the "ON" position.
3. Check if the DTC is set.
4. Turn the ignition switch to the "LOCK" (OFF) position.

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

Q: Is the check result satisfactory?

YES:
The procedure is complete.
NO:
Return to Step 1 .
SYMPTOM CHART Fig. 19: Automatic Air Conditioning Symptom Chart

Courtes
y of MITSUBISHI MOTOR SALES OF AMERICA
.
CAUTION: During diagnosis, a DTC code associated with other
system may be set when the ignition switch is turned
on with connector(s) disconnected. On completion,
confirm all systems for DTC code(s). If DTC code(s)
are set, erase them all.

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

1. Disconnect rear blower motor connector C-20, and measure the voltage at
the wiring harness side.
2. Turn the ignition switch to the "ON" position.
3. Turn the blower speed selection dial to the "MAX" position.
4. Turn the mode selection dial to the "Face" position.
5. Turn the rear blower switch to the "ON" position.
Fig. 27: Identifying Connector C
-20
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

6. Measure the voltage between terminal 3 and ground.
The measured value should be approximately 12 volts (battery positive volta
ge).

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

REAR BLOWER RELAY CONTINUIT
Y
Q: Is the rear blower relay in good condition?

YES:
Go to Step 5.
NO:
Replace the rear blower relay. The rear blower motor should operate
normally.
STEP 5. Measure the voltage at rear blower relay connector C-209.

1. Disconnect rear blower relay connector C-209, and measure the voltage at
the junction block side.
2. Turn the ignition switch to the "ON" position.
3. Turn the blower speed selection dial to the "MAX" position.
4. Turn the mode selection dial to the "Face" position.
5. Turn the rear blower switch to the "ON" position.
BATTERY VOLTAGE
TESTER
CONNECTION
SPECIFIED
CONDITION
Not applied
1 - 4
Open circuit
Connect terminal 3 to the
positive battery terminal

Connect terminal 2 to the
negative battery terminal
1 - 4
Less than 2 ohms

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

YES:
It can be assumed that this malfunction is intermittent.
Refer to
HOW TO USE TROUBLESHOOTING/INSPECTION
SERVICE POINTS
.
NO:
Repair the wiring harness. The rear blower motor should operate
normally.
DATA LIST REFERENCE TABLE DATA LIST REFERENCE

CHECK AT A/C-ECU TERMINAL SCAN TOOL
(MUT-III)
DISPLAY
ITEM NO.
INSPECTION
ITEM
INSPECTION
REQUIREMENT
NORMAL
VALUE
Inside
temperature
sensor
01
Interior
temperature
sensor
Ignition switch:
ON
Inside air
temperature
and
temperature
displayed on
the scan tool
are identical.
Photo sensor
06
Photo sensor
Ignition switch:
ON
Amount o
f
light is
proportional to
voltage
displayed on
the scan tool.
NOTE: For the data list items other than above, refer to DATA LIST REFERENCE TABLE
.

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

2004 BODY & ACCESSORIES
Ignition Switch - Endeavor
IGNITION SWITCH GENERAL DESCRIPTION < UP TO DECEMBER 2003 > IGNITION KEY REMINDER TONE ALARM The ignition key reminder tone alarm will sound under the following condition, and
warn the driver to remove the ignition key.
The driver's door is opened when the ignition switch is at "LOCK" (OFF) or
"ACC" position without removing the ignition key.
However, the light reminder tone alarm will take precedence over this function.
DOOR LOCK PREVENTION FUNCTION If the key is left in the ignition switch while the driver's door opened or the assistant
door opened, all door are automatically unlock to prevent locking the ignition key
in the vehicle after door is locked. IMMOBILIZER SYSTEM The immobilizer system consists of the ignition key, the immobilizer-ECU with key
ring antenna, and the PCM. The ignition key has a built-in transponder. Only the
registered ignition key permits the engine to start, therefore, the engine can never be
started by means of a forged key or by connecting the ignition wiring directly. The
system is significantly safe and reliable against theft. In addition, the driver has only
to turn the ignition switch to the "ON" position to activate the immobilizer system.
If the requirements for starting the engine are not satisfied, the engine will be
immobilized. If a registered ignition key is lost, all your ignition keys need to be
registered again using scan tool MB991958 (MUT-III Sub Assembly) to ensure
security (Refer to ON
-VEHICLE SERVICE
). An additional ignition key can be
registered as follows (only if no ignition keys are lost):
Using scan tool MB991958 (MUT-III Sub Assembly) (Refer to ON
-
VEHICLE SERVICE
).

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor


2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor

By operating two ignition keys that have been already registered (Refer to ON
-
VEHICLE SERVICE
).
OPERATION 1. When the ignition switch is turned to "ON" position, the PCM sends a
requirement for the encrypted code to the immobilizer-ECU (at this time, the
engine is remobilized).
2. When the immobilizer-ECU receives the requirement from the PCM, the
immobilizer-ECU supplies power to the transponder inside the ignition key via
the antenna. The energized transponder sends the encrypted code back to the
immobilizer-ECU via the antenna.
3. The immobilizer-ECU judges the encrypted code with its code logic in itself. If
they are identical, the immobilizer-ECU sends the encrypted code to the PCM.
4. If the PCM can not receive the encrypted code, the engine will be immobilized.
Fig. 1: Identifying PCM Operating Diagram

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CAUTION WHEN REPLACING IMMOBILIZER SYSTEM RELATED PARTS To replace immobilizer system related parts, refer to the table below. When the
ignition key is re-registered with scan tool MB991958, the originally registered
ignition key registration information will be lost.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor

Fig. 2: Identifying PCM Table

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
GENERAL DESCRIPTION < FROM TO JANUARY 2004 > IGNITION KEY REMINDER TONE ALARM The ignition key reminder tone alarm will sound under the following condition, and
warn the driver to remove the ignition key.
The driver's door is opened when the ignition switch is at "LOCK" (OFF) or
"ACC" position without removing the ignition key.
However, the light reminder tone alarm will take precedence over this function.
DOOR LOCK PREVENTION FUNCTION If the key is left in the ignition switch while the driver's door opened or the assistant
door opened, all door are automatically unlock to prevent locking the ignition key
in the vehicle after door is locked. IMMOBILIZER SYSTEM The immobilizer system consists of the ignition key, the key ring antenna,
immobilizer-ECU, and the PCM. The ignition key has a built-in transponder. The
key ring antenna is installed on the steering lock cylinder. Only the registered
ignition ke
y permits the en
gine to start
, therefore
, the en
gine can never be started b
y

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor