Mitsubishi Outlander (2003+). Manual — part 536
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-39
INSPECTION PROCEDURE 6: The A/C Indicator Flashes.
COMMENTS ON TROUBLE SYMPTOM
If the A/C indicator flashes then the possible causes
may be due to a defective A/C pressure system or
insufficient refrigerant gas.
TROUBLESHOOTING HINTS
•
Malfunction of the A/C pressure sensor
•
Malfunction of the air thermo sensor
•
Malfunction of the manual air conditioner control
panel (A/C-ECU)
DIAGNOSIS
STEP 1. Check the A/C pressure sensor
operation.
Refer to
.
Q: Is the A/C pressure sensor operating properly?
YES :
Go to Step 2.
NO :
Replace the A/C pressure sensor.
STEP 2. Check the air thermo sensor.
Refer to
Q: Is the air thermo sensor in good condition?
YES :
Go to Step 3.
NO :
Replace the air thermo sensor.
STEP 3. Check the refrigerant level.
Refer to
Q: Is the refrigerant level correct?
YES :
Replace the manual air conditioner control
panel (A/C-ECU).
NO :
Correct the refrigerant level (Refer to
AIR THERMO
SENSOR
AIR THERMO
SENSOR
A/C PRESSURE
SENSOR
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
(OUTLET SIDE)
(INLET SIDE)
A/C Pressure Sensor and Air Thermo Sensor Circuit
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-40
INSPECTION PROCEDURE 8: Defogger Function does not Operate.
COMMENTS ON TROUBLE SYMPTOM
If the defogger does not operate when the defogger
switch is turned on, the defogger relay system may
be defective.
TROUBLESHOOTING HINTS
•
Malfunction of the defogger relay
•
Malfunction of the defogger
•
Damaged the wiring harness or connectors
•
Malfunction of the manual air conditioner control
panel (A/C-ECU)
DIAGNOSIS
STEP 1. Check the A/C and outside/inside air
selection damper control motor operation.
Q: Do the A/C and outside/inside air selection damper
control motor work normally?
YES :
Go to Step 2.
NO :
Refer to Inspection procedure 9
"Malfunction of the A/C-ECU Power Supply
system
."
STEP 2. Measure the voltage at defogger
connector F-04.
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
IGNITION
SWITCH (IG2)
FUSIBLE
LINK
1
DEFOGGER
RELAY
DEFOGGER
SWITCH
DEFOGGER
A/C-ECU
Defogger Circuit
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-41
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Turn the defogger switch to the "ON " position.
(operate for approx. 11 minutes)
(4) Measure the voltage between terminal 1 and
body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 14.
NO :
Go to Step 3.
STEP 3. Check the defogger relay continuity.
Refer to
.
Q: Is the Defogger relay continuity in good condition?
YES :
Go to Step 4.
NO :
Replace the defogger relay.
STEP 4. Measure the voltage at defogger relay
connector C-206.
(1) Remove the relay, and measure at the junction
block side.
(2) Measure the voltage between terminal 5 and
body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Go to Step 5.
STEP 5. Connector check: C-206 defogger relay
connector
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the connector.
AC301658
Harness side
Connector: F-04
AB
F-04(B)
1
AC301541CE
Connector F-04
(Harness side)
1
AC210474
Connector: C-206
AK
Junction block (Front view)
3
4
5
1
2
Junction block side
AC301541CF
Connector C-206
(Junction block side)
3
4
5
1
2
AC210474
Connector: C-206
AK
Junction block (Front view)
3
4
5
1
2
Junction block side
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-42
STEP 6. Check the wiring harness between C-206
defogger relay connector terminal No.5 and the
fusible link (1).
NOTE:
Prior to the wiring harness inspection, check
intermediate connector C-116 and junction block
connector C-204, and repair if necessary.
•
Check the defogger relay power supply line for
open circuit.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00, How to
Cope with Intermittent Malfunction
NO :
Repair the wiring harness.
STEP 7. Measure the voltage at defogger relay
connector C-206.
(1) Remove the relay, and measure at the junction
block side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 1 and
earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 10.
NO :
Go to Step 8.
AC210475
Connectors: C-204, C-206
AV
Junction block (Front view)
C-206
C-204(B)
Harness side
C-204
3
4
5
1
2
Junction block side
C-206
1
AC301515 AB
Fusible link: No.1
AC301395AG
9
21
33
35
24
12
3 4
7
8
5 6
39
28
41
30
18
4243
31
1920
32
40
29
1617
38
27
15
37
36
26
14
13
25
2
1
34
23
11
10
22
Connector: C-116
AC210474
Connector: C-206
AK
Junction block (Front view)
3
4
5
1
2
Junction block side
AC301541CG
Connector C-206
(Junction block side)
3
4
5
1
2
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