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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 10: air mix
potentiometer.
1. Connect scan tool MB991958 to the data link connec
tor.
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
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Fig. 57: Connectin
g Scan Tool MB991958 To Data Link Connector
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
Page 2078 of 3870
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
2. Start the engine.
3. Check the data list.
Item 10: air mix 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 air mixing damper
control motor and potentiometer connector C-109 for loose, corroded or
damaged terminals, or terminals pushed back in the connector.
Q: Are A/C-ECU connectors C-16, C-17 and air mixing damper control
motor and potentiometer connector C-109 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
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2004 Mitsubishi Endeavor LS
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Fig. 58: Locating Connectors C
-16, C
-17 And C
-109
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 29) and air mixing damper control
motor and potentiometer connector C-109 (terminals 5, 7 and 3).
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2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
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Fig. 59: Locating Connectors C
-16, C
-17 And C
-109
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Are the wiring harness between A/C-ECU connectors C-16 (terminals
16 and 20), C-17 (terminal 29) and air mixing damper control motor and
potentiometer connector C-109 (terminals 5, 7 and 3) in good condition?
YES:
Go to Step 6.
NO
: Re
pair the wirin
g harness. Then
go to Ste
p 7 .
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
.
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Fig. 60: Locating Connectors C
-103 And C
-104
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
