Mitsubishi Outlander XL. Manual - part 1192

 

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Mitsubishi Outlander XL. Manual - part 1192

 

 

DIAGNOSIS

Required Special Tools:

MB991223: Harness Set

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. 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.54Ab-5."

(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. Using scan tool MB991958 read the hands free
module diagnostic trouble code.
Check whether an hands free module DTCs are set or not.

(1)

Turn the ignition switch to the "ON" position.

(2)

Check for hands free module DTCs.

(3)

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

Q:Is the check result satisfactory?

YES:

 Go to Step 3.

NO:

 Diagnose the hands free module (Refer to GROUP 52B,

Diagnostic Trouble Code P.52B-33).

STEP 3. Using scan tool MB991958, check for any
diagnostic trouble code.
Check  if  a  DTC,  which  relates  to  CAN  communication-linked
systems below, is set.

ETACS-ECU
DTC  indicating  a  time-out  error  related  to  the  hands  free
module system

(1)

Turn the ignition switch to the "ON" position.

AIR CONDITIONING

55A-59

MANUAL A/C DIAGNOSIS

(2)

Check for a DTC related to the relevant system.

(3)

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

Q:Is the check result satisfactory?

YES:

 Go to Step 5.

NO:

 Go to Step 4.

STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set.

(1)

Turn the ignition switch to the "ON" position.

(2)

Check if the DTC is set.

(3)

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

Q:Is the check result satisfactory?

YES:

 A poor connection, open circuit or other

intermittent malfunction is present in the lines between
the hands free module and the A/C-ECU (Refer to GROUP 00E,
Harness Connector Inspection P.00E-2.)

NO:

 Replace the SRS-ECU. On completion, check that the

DTC is not reset.

STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set.

(1)

Turn the ignition switch to the "ON" position.

(2)

Check if the DTC is set.

(3)

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

Q:Is the check result satisfactory?

YES:

 A poor connection, open circuit or other

intermittent malfunction is present in the lines between
the hands free module and the A/C-ECU (Refer to GROUP 00E,
Harness Connector Inspection P.00E-2.)

NO:

 Replace the A/C-ECU. On completion, check that the

DTC is not reset.

SYMPTOM CHART

M15502000099USA0000010000

During  diagnosis,  a  DTC  code  associated  with
other system may be set when the ignition switch

is turned on with connector(s) disconnected. On
completion, confirm all systems for DTC code(s).
If DTC code(s) are set, erase them all.

Symptom

Inspection
procedure

Reference
page

When the A/C is operation, temperature inside the passenger compartment
does not decrease (Cool air is not emitted).

1

 P.55A-61

Malfunction of the A/C power supply system.

2

 P.55A-63

The compressor does not work.

3

 P.55A-67

Blower fan and motor do not turn.

4

 P.55A-74

Blower air amount cannot be changed.

5

 P.55A-78

Outside/inside air changeover is not possible.

6

 P.55A-81

A/C outlet air temperature does not increase.

7

 P.55A-83

Air outlet vent cannot be changed.

8

 P.55A-85

55A-60

AIR CONDITIONING

MANUAL A/C DIAGNOSIS

Symptom

Inspection
procedure

Reference
page

Rear window defogger does not operate.

9

 P.55A-87

Blower motor power supply system.

10

 P.55A-94

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: When the A/C is Operation, Temperature Inside the
Passenger Compartment does not Decrease (Cool Air is not Emitted).

M15502000137USA0000010000

TECHNICAL DESCRIPTION (COMMENT)
The blower system or the compressor system may be
defective if there is no cool air coming from the vents.

TROUBLESHOOTING HINTS

Malfunction of blower motor

Malfunction of A/C-ECU

Malfunction of A/C compressor

DIAGNOSIS

STEP 1. Using scan tool MB991958, read the 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.
Check if an A/C-ECU DTC is set.

(1)

Connect scan tool MB991958. Refer to "How to connect the
Scan Tool (M.U.T.-III) P.54Ab-5."

(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:

 Refer to Diagnostic Trouble Code Chart P.55A-8.

NO:

 Go to Step 2.

STEP 2. Check that the blower motor operation when the
blower knob is moved to the "Maximum air volume"
position.

(1)

Turn the ignition switch to the "ON" position.

(2)

Turn the blower knob to the "Maximum air volume" position

AIR CONDITIONING

55A-61

MANUAL A/C DIAGNOSIS

Q:Does the blower motor operate when the blower knob is

moved to the "Maximum air volume" position?

YES:

 Go to Step 3.

NO:

 Refer to Inspection procedure 4 "Blower fan and motor

do not turn P.55A-74."

STEP 3. Check the rear window defogger and outside/inside
air selection damper control motor operation.

(1)

Turn the ignition switch to the "ON" position.

(2)

Check the operations of rear window defogger and outside/
inside air selection damper control motor.

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

control motor work normally?

YES:

 Refer to Inspection procedure 3 "The A/C compressor

does not Work P.55A-67."

NO:

 Refer to Inspection procedure 2, "Malfunction of the

A/C-ECU power supply system P.55A-63."

55A-62

AIR CONDITIONING

MANUAL A/C DIAGNOSIS

 

 

 

 

 

 

 

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