Mitsubishi Outlander XL. Manual — part 1212

Symptom

Inspection
procedure

Reference
page

Air outlet vent cannot be changed.

8

Rear window defogger does not operate.

9

Blower motor power supply system.

10

When sunlight intensity changes, air outlet temperature does not change. 11

P.55B-11

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 11: When Sunlight Intensity Changes, Air Outlet
Temperature does not Change.

M15504000137USA0000010000

Photo Sensor Circuit

A/C-ECU

PHOTO
SENSOR

ZC6008760043

Connectors: C-05, C-109

C-109 (B)

C-05

CIRCUIT OPERATION
When the blower air temperature cannot be changed
even if the preset temperature is changed, the
sensors may be defective.

TROUBLESHOOTING HINTS

｠

Malfunction of the photo sensor

｠

Malfunction of the A/C-ECU

｠

Malfunction of connector.

｠

Malfunction of the harness.

DIAGNOSIS

Required Special Tools:

｠

MB991223: Harness Set

AUTOMATIC AIR CONDITIONING

55B-11

AUTO A/C DIAGNOSIS

｠

MB992006: Extra Fine Probe

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: V.C.I.

｠

MB991827: M.U.T.-III USB Cable

｠

MB991910: M.U.T.-III Main Harness A

STEP 1. Check the defogger and outside/inside air selection
damper control motor operation.

Q:Do the defogger and outside/inside air selection damper

control motor work normally?

YES:

Go to Step 2.

NO:

Refer to GROUP 55A, Symptom chart, P.55A-60.

STEP 2. Recheck for diagnostic trouble code.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991958.
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:

Go to Step 3.

NO:

Refer to P.55B-7.

STEP 3. Using scan tool MB991958, check data list.

(1)

Connect scan tool MB991958 to the data link connector.

(2)

Start the engine.

(3)

Set scan tool MB991958 to the data reading mode.

｠

Item 67: Photo sensor

(4)

Cover the photo sensor and security indicator with your hand
or a shop towel.

NOTE:

Check that the voltage displayed on the scan tool

changes.

(5)

Turn the ignition switch to the "LOCK" (OFF) position.

Q:Does the voltage displayed on the scan tool change when

the photo sensor and security indicator is covered?

YES:

Replace the A/C-ECU. Check that the A/C works

normally.

NO:

Go to Step 4.

55B-12

AUTOMATIC AIR CONDITIONING

AUTO A/C DIAGNOSIS

STEP 4. Check A/C-ECU connector C-109 and photo sensor
connector C-05 for loose, corroded or damaged terminals,
or terminals pushed back in the connector.

Q:Are A/C-ECU connector C-109 and photo sensor

connector C-05 in good condition?

YES:

Go to Step 5.

NO:

Repair or replace the connector. Refer to GROUP 00E,

Harness Connector Inspection P.00E-2.

STEP 5. Check the wiring harness between photo sensor
connector C-05 (terminals 4 and 5) and A/C-ECU connector
C-109 (terminals 19 and 18).

Q:Is the wiring harness between photo sensor connector

C-05 (terminals 4 and 5) and A/C-ECU connector C-109

(terminals 19 and 18) in good condition?

YES:

Go to Step 6.

NO:

Repair the wiring harness. Check that the A/C works

normally.

STEP 6. Replace the photo sensor.

Q:Does the A/C operate normally?

YES:

No action is necessary and testing is complete.

NO:

Replace the A/C-ECU. Check that the A/C works

normally.

DATA LIST REFERENCE TABLE

M15504000051USA0000010000

Item No.

Check items

Inspection status

The

display

contents

under

normal
conditions

17

Engine speed

-

Displays

correct

engine speed.

19

Ambient

temperature

sensor

-

Ambient
temperature is the
same as scan tool
displayed
temperature

20

Air thermo sensor

-

Evaporator outlet
temperature is the
same as scan tool
displayed
temperature.

21

Interior

temperature

sensor

-

Interior
temperature is the
same as scan tool
displayed
temperature

AUTOMATIC AIR CONDITIONING

55B-13

AUTO A/C DIAGNOSIS

Item No.

Check items

Inspection status

The

display

contents

under

normal
conditions

23

Temperature setting

Displays

air

conditioning

set

temperature.

24

ETC sensor

-

Engine

coolant

temperature is the
same as scan tool
displayed
temperature.

26

Vehicle speed

-

Displays

vehicle

speed.

27

A/C Compressor drive
request

Compressor ON

ON

Compressor OFF

OFF

28

Air conditioning switch

Air conditioning switch ON

ON

Air conditioning switch OFF

OFF

29

Refrigerant leak

-

Normal

34

Idel up request

-

Displays

idle-up

request signal.

45

In/out select damper
poten (target)

-

Displays outside/
inside air selection
damper

target

position.

46

In/out

select

damp

potentiometer

-

Displays outside/
inside air selection
damper position.

55

Air

outlet

c/o

potentiometer

-

Displays air outlet
changeover
damper position.

56

Air outlet c/o potentio.
(Target)

-

Displays air outlet
changeover
damper

target

position.

57

Low pressure judgment -

Normal

60

Rear defogger switch

Rear window defogger switch ON

ON

Rear window defogger switch OFF

OFF

61

Pressure sensor

-

Displays
refrigerant
pressure.

63

Air mix potentiometer

-

Displays the air mix
damper position.

67

Photo sensor

-

Displays sunload.

55B-14

AUTOMATIC AIR CONDITIONING

AUTO A/C DIAGNOSIS