Mitsubishi Outlander XL. Manual - part 1191

(3)

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

Q:Is the check result satisfactory?

YES:

 Go to Step 3.

NO:

 Diagnose the Audio (Refer to GROUP 54B, Diagnostic

Trouble Code P.54B-7).

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 Audio system

(1)

Turn the ignition switch to the "ON" position.

(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 audio and the A/C-ECU (Refer to GROUP 00E, Harness
Connector Inspection P.00E-2.)

NO:

 Replace the Audio. 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 audio 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.

AIR CONDITIONING

55A-55

MANUAL A/C DIAGNOSIS

DTC U0195: Satellite radio tuner Time-out

M15502000955USA0000010000

If DTC U0195 is set in the A/C-ECU, diagnose the
CAN main bus line.

Whenever  the  ECU  is  replaced,  ensure  that  the
communication circuit is normal.

TROUBLE JUDGMENT
The  A/C-ECU  receives  air  conditioning  operation-
related  signals  from  the  satellite  radio  tuner  via  the
CAN bus lines. If any of the air conditioning control-
related signals from the satellite radio tuner cannot be
received, the diagnostic trouble code U0195 is stored.

TECHNICAL DESCRIPTION (COMMENT)

Current trouble

｠

Connector(s) or wiring harness in the CAN bus lines
between the Satellite radio tuner and the A/C-ECU,
the power supply system to the Satellite radio tuner,
the Satellite radio tuner itself, or the A/C-ECU may
be defective.

Past trouble

｠

If DTC U0195 is stored as a past trouble, carry out
diagnosis  with  particular  emphasis  on  wiring  and

connector(s) in the CAN bus line between the A/C-
ECU and the Satellite radio tuner, and the power
supply  system  to  the  Satellite  radio  tuner.  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.

NOTE: 

For a past trouble, you cannot find it by

the scan tool CAN bus diagnostics even if there
is a failure in CAN bus lines. In this case,
refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points - How to Cope with
Intermittent Malfunctions P.00-15) and check
the CAN bus lines. You can narrow down the
possible cause of the trouble by referring to
the DTC, which is set regarding the CAN
communication-linked ECUs (Refer to GROUP 54D,
Explanation about the scan too CAN bus
diagnostics P.54D-10).

TROUBLESHOOTING HINTS

｠

Malfunction of the Satellite radio tuner

｠

Malfunction of the A/C-ECU

｠

Damaged harness wires and connectors

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

55A-56

AIR CONDITIONING

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. Using scan tool MB991958 read the Satellite radio
tuner diagnostic trouble code.
Check whether an Satellite radio tuner DTCs are set or not.

(1)

Turn the ignition switch to the "ON" position.

(2)

Check for Satellite radio tuner 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 Satellite radio tuner (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 Satellite radio
tuner system

(1)

Turn the ignition switch to the "ON" position.

(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.

AIR CONDITIONING

55A-57

MANUAL A/C DIAGNOSIS

Q:Is the check result satisfactory?

YES:

 A poor connection, open circuit or other

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

NO:

 Replace the Satellite radio tuner. 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 Satellite radio tuner 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.

DTC U0197: Hands Free Module Time-out

M15502000956USA0000010000

If DTC U0197 is set in the A/C-ECU, diagnose the
CAN main bus line.

Whenever  the  ECU  is  replaced,  ensure  that  the
communication circuit is normal.

TROUBLE JUDGMENT
The  A/C-ECU  receives  the  air  conditioning  control-
related  signals  from  the  hands-free  module  via  the
CAN bus lines. If any of the air conditioning control-
related  signals  from  the  SRS-ECU  cannot  be
received, the diagnostic trouble code U0197 is stored.

TECHNICAL DESCRIPTION (COMMENT)

Current trouble

｠

Connector(s) or wiring harness in the CAN bus lines
between the hands free module and the A/C-ECU,
the power supply system to the hands free module,
the hands free module itself, or the A/C-ECU may
be defective.

Past trouble

｠

If DTC U0151 is stored as a past trouble, carry out
diagnosis  with  particular  emphasis  on  wiring  and

connector(s) in the CAN bus line between the A/C-
ECU  and  the  hands  free  module,  and  the  power
supply  system  to  the  hands  free  module.  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.

NOTE: 

For a past trouble, you cannot find it by

the scan tool CAN bus diagnostics even if there
is a failure in CAN bus lines. In this case,
refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points - How to Cope with
Intermittent Malfunctions P.00-15) and check
the CAN bus lines. You can narrow down the
possible cause of the trouble by referring to
the DTC, which is set regarding the CAN
communication-linked ECUs (Refer to GROUP 54D,
Explanation about the scan too CAN bus
diagnostics P.54D-10).

TROUBLESHOOTING HINTS

｠

Malfunction of the hands free module

｠

Malfunction of the A/C-ECU

｠

Damaged harness wires and connectors

55A-58

AIR CONDITIONING

MANUAL A/C DIAGNOSIS