2004 MITSUBISHI ENDEAVOR sensor

Fig. 293: Removing And Installing Ambient Temperature Sensor

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REMOVAL SERVICE POINT << A >> AMBIENT AIR TEMPERATURE SENSOR REMOVAL To remove the ambient air tem
perature sensor, brea
k off the tab as shown.

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Fig. 294: Identifying Ambient Air Temperature Sensor Tab

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

INSPECTION AMBIENT AIR TEMPERATURE SENSOR CHECK
CAUTION: The ambient air temperature sensor should be
checked with removing it. If the sensor is removed, it
is no longer serviceable.

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Measure the resistance between the sensor terminals under at least two
temperatures. The resistance values should meet the values shown. Fig. 295: Temperature Resistance Graph

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

COMPRESSOR ASSEMBLY AND TENSION PULLEY REMOVAL AND INSTALLATION NOTE: The temperature should be within the shown range.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

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

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
DIAGNOSTIC TROUBLE CODE CHART Fig. 6: Automatic Air Conditioning Diagnostic Trouble Code Chart

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DIAGNOSTIC TROUBLE CODE PROCEDURES DTC B1001, B1002: INTERIOR TEMPERATURE SENSOR SYSTEM NOTE: For test procedures not included in this article, refer to
DIAGNOSTIC TROUBLE CODE CHART
.

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

Fig. 7: View Of Temperature Sensor Circuit

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

Fig. 9: Identifying Connectors C
-104 And C
-120

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DTC SET CONDITION
DTC B1001 is set if there is a short circuit in the interior temperature sensor
input circuit. DTC B1002 is set if there is a defective connector connection, or if there is an
open circuit in the harness.
TECHNICAL DESCRIPTION (COMMENT)
CURRENT TROUBLE
The A/C-ECU, the interior air temperature sensor, or connector(s) or wiring
between the two may be defective.
PAST TROUBLE
2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor

If DTC B1001 or B1002 is stored as a past trouble, carry out diagnosis with
particular emphasis on wiring and connector(s) between the A/C-ECU and the
interior air temperature sensor. If the connectors and wiring are normal, and
obviously the ECU is the cause of the trouble, replace the ECU. If in doubt, do
not replace the ECU.
TROUBLESHOOTING HINT
Malfunction of connector. Malfunction of the harness. Malfunction of the interior temperature sensor. Malfunction of the A/C-ECU.
DIAGNOSIS Required Special Tools:

MB991223: Harness Set 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)
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.

Use scan tool MB991958 to diagnose the CAN bus lines.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to "ON" position.
3. Diagnose the CAN bus line.

2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor