Mitsubishi Outlander (2003+). Manual — part 551
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-19
YES :
Replace the automatic air conditioner
control panel (A/C-ECU).
NO :
Repair the wiring harness.
Diagnosis code 32: Mode selection damper control motor potentiometer system
COMMENTS ON TROUBLE SYMPTOM
This code is set when the mode selection damper
control motor potentiometer does not send any
signal to the A/C-ECU due to short or open circuit.
Possible causes
•
Malfunction of the mode selection damper control
motor and potentiometer
•
Malfunction of the automatic air conditioner
control panel (A/C-ECU)
•
Damaged the wiring harness or connectors
DIAGNOSIS
Step 1. Check the mode selection damper control
motor and potentiometer.
Refer to
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Replace the mode selection damper control
motor and potentiometer.
HEATER WATER
TEMPERATURE
SENSOR
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet
MODE SELECTION
DAMPER CONTROL
MOTOR AND
POTENTIOMETER
A/C-ECU
Mode Selection Damper Control Motor Potentiometer Circuit
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-20
Step 2. Connector check: C-27 A/C-ECU
connector and C-315 mode selection damper
control motor and potentiometer connector
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the connector.
AC301397
Connector: C-27
<LHD>
AX
C-27(B)
Harness side
8
2
10 9
1
5
3
4
6
7
20191817161514131211
AC308735
Connector: C-27 <RHD>
AY
C-27(B)
Harness side
8
2
10 9
1
5
3
4
6
7
20191817161514131211
AC309435
Connector: C-315 <LHD>
AE
Harness side
2
6 5
1
3
4
AC308739
Connector: C-315 <RHD>
AF
Harness side
2
6 5
1
3
4
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-21
Step 3. Check the wiring harness between C-27
A/C-ECU connector (terminals 10, 6 and 20) and
C-315 mode selection damper control motor and
potentiometer connector (terminals 2, 5 and 6).
NOTE: Prior to the wiring harness inspection, check
intermediate connector C-36 and heater water
temperature sensor connector C-314, and repair if
necessary.
•
Check the potentiometer power supply, earth and
signal line for open or short circuit.
Q: Is the check result normal?
YES :
Malfunction of the automatic air conditioner
control panel (A/C-ECU)
NO :
Repair the wiring harness.
AC301398
Connectors: C-27, C-36 <LHD>
C-27(B)
C-27
C-36
BE
C-36
Harness side
8
2
10 9
1
5
3
4
6
7
20191817161514131211
1 2
4
3
12
11
10
9
8
7
6
13
5
AC308736
Connectors: C-27, C-36 <RHD>
C-27(B)
C-27
C-36
AK
C-36
Harness side
8
2
10 9
1
5
3
4
6
7
20191817161514131211
1 2
4
3
12
11
10
9
8
7
6
13
5
AC309436
Connectors: C-314, C-315 <LHD>
Harness side
C-314
C-315
2
1
C-314
AD
C-315
2
6 5
1
3
4
Harness side
AC308740
Connectors: C-314, C-315 <RHD>
Harness side
C-314
C-315
2
1
C-314
AD
C-315
2
6 5
1
3
4
Harness side
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-22
Diagnosis code 41: Air mixing damper control motor system
COMMENTS ON TROUBLE SYMPTOM
This code is set when the air mixing damper cannot
be rotated to the preset opening angle.
Possible causes
•
Malfunction of the air mixing damper control
motor and potentiometer
•
Malfunction of the automatic air conditioner
control panel (A/C-ECU)
•
Damaged the wiring harness or connectors
DIAGNOSIS
Step 1. Check the air mixing damper control
motor and potentiometer.
Refer to
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Replace the air mixing damper control
motor and potentiometer.
AIR MIXING DAMPER CONTROL
MOTOR AND POTENTIOMETER
MOTOR
DRIVE CIRCUIT
A/C-ECU
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet
Air MIxing Damper Control motor Circuit
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