Page 2438 of 3870
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
Q: Is the check result satisfactory?
YES:
Go to Step 2.
NO:
Repair the CAN bus lines (Refer to
CAN COMMUNICATION
SIGNAL TABLE
). Then go to Step 7 .
STEP 2. Recheck for diagnostic trouble code.
Recheck if the DTC is set.
1. Erase the DTC.
2. Turn the ignition switch to "ON" position.
3. Check if the DTC is set.
Q: Is the check result satisfactory?
YES:
It can be assumed that this malfunction is intermittent. Refer to
HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS
.
NO:
Go to Step 3.
STEP 3. Using scan tool MB991958, check data list item 01: interior
temperature sensor.
1. Connect scan tool MB991958 to the data link connector.
2. Start the engine.
3. Check the data list.
Item 01: Interior temperature sensor.
Check that the ambient tem
perature matches the dis
played value on
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 HVAC Automatic Air Conditioning - Endeavor
Page 2441 of 3870
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
Q: Is the sensor within the specified range?
YES:
It can be assumed that this malfunction is intermittent. Refer to
HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS
. Then go to Step 7 .
NO:
Go to Step 4.
STEP 4. Check A/C-ECU connector C-16, C-17 and interior temperature
sensor connector C-120 for loose, corroded or damaged terminals, or
terminals pushed back in the connector
.
2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor
Page 2443 of 3870
Fig. 13: Identifying Connector C
-120
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Are A/C-ECU connector C-16, C-17 and interior temperature sensor
connector C-120 in good condition?
YES:
Go to Step 5.
NO:
Repair or replace the connector. Refer to
HARNESS
CONNECTOR INSPECTION
. Then go to Step 7 .
STEP 5. Check the wiring harness between A/C-ECU connector C-16
(terminals 20), C-17 (terminals 22) and interior temperature sensor
connector C-120 (terminals 1 and 2)
.
2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor
Page 2446 of 3870
Fig. 15: Identifying Connectors C
-104 And C
-120
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Are the wiring harnesses between A/C-ECU connector C-16 (terminals
20), C-17 (terminals 22) and interior temperature sensor connector C-120
(terminals 1 and 2) in good condition?
YES:
Go to Step 6.
NO:
Repair the wiring harness. Then go to Step 7 .
STEP 6. Check the interior temperature sensor.
1. Disconnect interior tem
perature sensor connector C-120.
NOTE: Also check joint connector C-104 for loose, corroded,
or damaged terminals, or terminals pushed back in the
connector. If joint connector C-104 is damaged, repair
or replace the connector as described in HARNESS
CONNECTOR INSPECTION
.
2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor
Page 2447 of 3870
Fig. 16: Identifying Connector C
-120
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. When the resistance between the sensor terminals is measured under two
or more temperature conditions, the resistance should approximately
satisfy the illustrated values.
NOTE: The temperature conditions when checking should
not exceed the range shown in the diagram.
2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor
Page 2448 of 3870
Fig. 17: Temperature Resistance Graph
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Is the interior temperature sensor in good condition?
YES:
Replace the A/C-ECU. Then go to Step 7.
NO:
Replace the interior temperature sensor. Then go to Step 7.
STEP 7. Recheck for diagnostic trouble code.
Check again if the DTC is set.
1. Connect scan tool MB991958 to the data link connec
tor
2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor
Page 2503 of 3870
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
Page 2511 of 3870
Fig. 73: Identifying Switch Table
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
REAR BLOWER RELAY CONTINUITY CHECK
SENSORS REMOVAL AND INSTALLATIONSWITCH
POSITION
TESTER
CONNECTION
SPECIFIED
CONDITION
MIN
1 - 3, 3 - 5, 3 - 6
Open circuit
LO
3 - 6
Less than 2 ohms
ME
1 - 3
Less than 2 ohms
HI (MAX)
3 - 5
Less than 2 ohms
2004 Mitsubishi Endeavor LS
2004 HVAC Automatic Air Conditioning - Endeavor
