Mitsubishi Lancer Evolution IX. Manual — part 534
![](/vehicles/winoney/wruvea/ger/tangb.png)
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55-9
STEP 2. Connector check: A-44 outside thermo
sensor connector and C-36 A/C-ECU connector
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the connector.
STEP 3. Check the wiring harness between A-44
outside thermo sensor connector (terminals 1
and 2) and C-36 A/C-ECU connector (terminals 20
and 7).
AC504656AB
Connector: A-44
Harness side
A-44 (BR)
AC504622AB
Connector: C-36 <LHD>
Harness side
C-36 (B)
AC504618AJ
Connector: C-36 <RHD>
Harness side
C-36 (B)
AC504656AB
Connector: A-44
Harness side
A-44 (BR)
AC504622AB
Connector: C-36 <LHD>
Harness side
C-36 (B)
AC504618AJ
Connector: C-36 <RHD>
Harness side
C-36 (B)
![](/vehicles/winoney/wruvea/ger/hedan.png)
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55-10
NOTE:
Prior to the wiring harness inspection, check interme-
diate connector C-145 <LH drive vehicles> or C-129
<RH drive vehicles>, and repair if necessary.
• Check the sensor signal line and earth line for
open or short circuit.
Q: Is the check result normal?
YES :
Replace the automatic A/C control panel
(A/C-ECU)
NO :
Repair the wiring harness.
AC504618AK
Connector: C-129 <RHD>
AC504622AE
Connector: C-145 <LHD>
![](/vehicles/winoney/wruvea/ger/medayoy.png)
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55-11
Code No.15, 16: Heater Water Temperature Sensor System
COMMENTS ON TROUBLE SYMPTOM
This code is set when the heater water temperature
sensor circuit is open (Code No.15) or is short (Code
No.16).
PROBABLE CAUSES
• Malfunction of the heater water temperature sen-
sor
• Damaged the wiring harness or connectors
• Malfunction of the automatic A/C control panel
(A/C-ECU)
DIAGNOSIS PROCEDURE
STEP 1. Check the heater water temperature
sensor.
Refer to
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Replace the heater water temperature
sensor.
Heater Water Temperature Sensor Circuit
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple
HEATER WATER
TEMPERATURE
SENSOR
A/C-ECU
![](/vehicles/winoney/wruvea/ger/juni.png)
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55-12
STEP 2. Connector check: C-36 A/C-ECU
connector and C-32 heater water temperature
connector
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the connector.
STEP 3. Check the wiring harness between C-36
A/C-ECU connector (terminals 4 and 20) and C-32
heater water temperature sensor connector
(terminals 2 and 1).
AC504617AJ
Connector: C-32 <LHD>
Harness side
AC504624AE
Connector: C-32, C-36 <RHD>
Harness side
C-32
C-36
C-32
C-36 (B)
AC504622AB
Connector: C-36 <LHD>
Harness side
C-36 (B)
AC504617AJ
Connector: C-32 <LHD>
Harness side
AC504624AE
Connector: C-32, C-36 <RHD>
Harness side
C-32
C-36
C-32
C-36 (B)
AC504622AB
Connector: C-36 <LHD>
Harness side
C-36 (B)
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