Page 2108 of 3870
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
2. Turn the ignition switch to "ON" position.
3. Diagnose the CAN bus line.
Q: Is the check result satisfactory?
YES:
Go to Step 2.
NO:
Repair the CAN bus lines (Refer to
CAN BUS DIAGNOSTICS
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 12: Air outlet c/o
potentiometer.
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 Heater Air Conditioning, Ventilation - Endeavor
Page 2109 of 3870
1. Connect scan tool MB991958 to the data link connector.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
Page 2110 of 3870
Fig. 77: Connecting Scan Tool MB991958 To Data Link Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. Start the engine.
3. Check the data list.
Item 12: Air outlet c/o potentiometer.
Check that the set position of the heater control matches the displayed
position on the scan tool.
4. Turn the ignition switch to the "LOCK" (OFF) position
Q: Is the sensor within the specified range?
YES:
Replace the A/C-ECU. Then go to Step 7 .
NO:
Go to Step 4.
STEP 4. Check A/C-ECU connectors C-16, C-17 and mode selection
damper control motor and potentiometer connector C-123 for loose,
corroded or damaged terminals, or terminals pushed back in the
connector.
Q: Are A/C-ECU connectors C-16, C-17 and mode selection damper
control motor and potentiometer connector C-123 in good condition?
YES:
Go to Step 5.
NO:
Repair or replace the connector. Refer to
HARNESS
CONNECTOR INSPECTION
. Then
go to Ste
p 7 .
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
Page 2111 of 3870
Fig. 78: Locating Connectors C
-16 And C
-17
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y of MITSUBISHI MOTOR SALES OF AMERICA
.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
Page 2112 of 3870
Fig. 79: Locating Connector C
-123
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 5. Check the wiring harness between A/C-ECU connectors C-16
(terminals 16 and 20), C-17 (terminal 21) and mode selection damper
control motor and potentiometer connector C-123 (terminals 5, 7 and 3).
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
Page 2113 of 3870
Fig. 80: Locating Connectors C
-16 And C
-17
Courtes
y of MITSUBISHI MOTOR SALES OF AMERICA
.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
Page 2114 of 3870
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
Page 2115 of 3870
Fig. 81: Locating Connectors C
-103, C
-104 And C
-123
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Are the wiring harnesses between A/C-ECU connector C-16 (terminals
16 and 20), C-17 (terminal 21) and mode selection damper control motor
and potentiometer connector C-123 (terminals 5, 7 and 3) in good
condition?
YES:
Go to Step 6.
NO:
Repair the wiring harness. Then go to Step 7 .
STEP 6. Check the mode selection damper control motor and
potentiometer.
NOTE: Also check joint connectors C-103 and C-104 for loose,
corroded, or damaged terminals, or terminals pushed
back in the connector. If joint connector C-103 or C-104
is damaged, repair or replace the connector as
described in HARNESS CONNECTOR INSPECTION
.
CAUTION: Do not apply battery voltage when the damper is
in the FACE or DEF position.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
