Mitsubishi Outlander XL. Manual - part 1185

STEP 3. Check A/C pressure sensor connector A-50 and A/
C-ECU connector C-109 for loose, corroded or damaged
terminals, or terminals pushed back in the connector.

Q:Are air A/C pressure sensor connector A-50 and A/C-ECU

connector C-109 in good condition?

YES:

 Go to Step 4.

NO:

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

Harness Connector Inspection P.00E-2.

STEP 4. Check the wiring harness between A/C-ECU
connector C-109 (terminals 20, 16 and 19) and A/C pressure
sensor connector A-50 (terminals 3, 2 and 1).

Q:Is the wiring harness between A/C-ECU connector C-109

(terminals  20,  16  and  19)  and  A/C  pressure  sensor

connector A-50 (terminals 3, 2 and 1) in good condition?

YES:

 Go to Step 5.

NO:

 Repair the wiring harness.

STEP 5. Check the A/C pressure sensor operation.

(1)

Assemble  a  gauge  manifold  on  the  high  pressure  service
valve.

ZC6035740000

A/C pressure sensor

AC603575

Harness side

A/C
pressure 
sensor side

MB991658

0000

(2)

Disconnect the A/C pressure sensor connector and connect
special  tool  test  harness  MB991658  as  shown  in  the
illustration.

(3)

Turn ON the engine and then turn ON the A/C switch.

ZC6035760000

Refrigerant pressure MPa (psi)

Output voltage  

(V)

0

1

2

3

5

4

1 (145)

2 (290)

3 (435)

(4)

At this time, check to see that the voltage of A/C pressure
sensor terminal No. 2 reflects the specifications of the figure.

NOTE: 

The allowance shall be defined as ±5%.

Q:Is the A/C pressure sensor operating properly?

YES:

 Go to Step 6.

NO:

 Replace the A/C pressure sensor. Then go to Step 7.

AIR CONDITIONING

55A-31

MANUAL A/C DIAGNOSIS

STEP 6. Check the refrigerant level.
Use  the  refrigerant  recovery  station  to  remove  all  of  the
refrigerant, and then calculate the amount of the refrigerant and
charge it.

Q:Is the refrigerant level correct?

YES:

 Go to Step 7.

NO:

 Correct the refrigerant level (Refer to On-vehicle

Service P.55A-103). Then go to Step 7.

STEP 7. Recheck for diagnostic trouble code.
Check again if the DTC is set.

(1)

Connect scan tool MB991958 to the data link connector

(2)

Turn the ignition switch to the "ON" position.

(3)

Check if the DTC is set.

(4)

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

Q:Is the check result satisfactory?

YES:

 The procedure is complete.

NO:

 Return to Step 1.

DTC B2214: Control Panel Failure

M15502000945USA0000010000

A/C Control Panel Circuit

A/C-ECU

A/C
CONTROL
PANEL

CPU

INTERFACE
CIRCUIT

55A-32

AIR CONDITIONING

MANUAL A/C DIAGNOSIS

ZC600876

Connector: C-109, C-119

C-119

C-109 (B) 

0034

 

DTC SET CONDITION
DTC B2214 will be set when the A/C-ECU detects the
A/C control panel abnormality.

TECHNICAL DESCRIPTION (COMMENT)

Current trouble

｠

The A/C-ECU, the A/C control panel, or connector
(s) or wiring between the two may be defective.

Past trouble

｠

If DTC B2214 is stored as a past trouble, carry out
diagnosis  with  particular  emphasis  on  wiring  and

connector(s)  between  the  A/C-ECU  and  the  A/C
control  panel.  If  the  connectors  and  wiring  are
normal, and obviously the ECU is the cause of the
trouble, replace the ECU. If in doubt, do not replace
the ECU.

TROUBLESHOOTING HINT

｠

Malfunction of connector.

｠

Malfunction of the harness.

｠

Malfunction of the A/C control panel.

｠

Malfunction of the A/C-ECU.

DIAGNOSIS

Required Special Tool:

｠

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

｠

MB991824: Vehicle Communication Interface (V.C.I.)

｠

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

｠

MB991910:  M.U.T.-III  Main  Harness  A  (Vehicles  with
CAN communication system)

AIR CONDITIONING

55A-33

MANUAL A/C DIAGNOSIS

STEP 1. Using scan tool MB991958, diagnose the CAN bus
line

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.

(1)

Connect scan tool MB991958. Refer to "How to connect the
Scan Tool (M.U.T.-III) P.55A-6."

(2)

Turn the ignition switch to the "ON" position.

(3)

Diagnose the CAN bus line.

(4)

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

Q:Is the CAN bus line found to be normal?

YES:

 Go to Step 2.

NO:

 Repair the CAN bus line. (Refer to GROUP 54D,

Diagnosis P.54D-17).

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 GROUP 00, How to Use
Troubleshooting/Inspection Service Points - How to Cope
with Intermittent Malfunctions P.00-15.

NO:

 Go to Step 3.

STEP 3. Check A/C control panel connector C-119 and A/C-
ECU connector C-109 for loose, corroded or damaged
terminals, or terminals pushed back in the connector.

Q:Are  A/C  control  panel  connector  C-119  and  A/C-ECU

connector C-109 in good condition?

YES:

 Go to Step 4.

NO:

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

Harness Connector Inspection P.00E-2.

STEP 4. Check the wiring harness between A/C-ECU
connector C-109 (terminal 9 and 10) and A/C control panel
connector C-119 (terminals 9 and 1).

Q:Is the wiring harness between A/C-ECU connector C-109

(terminal 9 and 10) and A/C control panel connector C-119

(terminals 9 and 1) in good condition?

YES:

 Go to Step 5.

NO:

 Repair the wiring harness.

55A-34

AIR CONDITIONING

MANUAL A/C DIAGNOSIS