Mitsubishi Outlander GS45X. Manual — part 1029

AUTOMATIC A/C DIAGNOSIS

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-7

CHECK OF FREEZE FRAME DATA

The freeze frame data can be checked by using the
scan tool (GROUP 00, How to Cope with Intermittent
Malfunction

P.00-15

).

.

When detecting fault and storing the DTC, the ECU
connected to CAN bus line obtains the data before
the determination of the DTC and the data when the
DTC is determined, and then stores the ECU status
of that time. By analyzing the data from scan tool, the
troubleshooting can be performed more efficiently.
The displayed items are as shown in the table below.
DISPLAY ITEM LIST

NOTE:

.

•

*

: If a failure occurs to both the ABS-ECU and

ETACS-ECU, 0000 mile or FFFF km is displayed
to the scan tool MB991958.

Item No.

Item name

Content item

Unit

01

Odometer

Total driving distance after the diagnostic trouble
code is generated

mile

*

02

Ignition cycle

Number of times the ignition switch is turned "ON" or
"LOCK (OFF)" after the past failure transition

Number of
counts is
displayed.

04

Current trouble
accumulative time

Cumulative time for current malfunction of
diagnostic trouble code

min

AUTOMATIC A/C DIAGNOSIS

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-8

DIAGNOSTIC TROUBLE CODE CHART

M1554004900719

CAUTION

During diagnosis, a DTC code associated with
another system may be set when the ignition
switch is turned on with connector(s) discon-
nected. After completing the repair, confirm all
systems for DTC code(s). If DTC code(s) are set,
erase them all.

NOTE: *: This diagnostic trouble code will be set
even if the system is normal.

Diagnostic
trouble code No.

Diagnostic item

Reference
page

B10C0

Interior temperature sensor system (short circuit)

P.55B-9

B10C1

Interior temperature sensor system (open circuit)

P.55B-9

B1000

Control panel communication error

Refer to
GRUOP 55A,
diagnostic
trouble code
chart

P.55A-11

B1003

Mode dial SW error

B1018

Temperature control dial SW error

B1021

Fan dial SW error

B1031

Air thermo sensor system (short circuit)

B1032

Air thermo sensor system (open circuit)

B1034

Ambient air temperature sensor system (short circuit)

B1035

Ambient air temperature sensor system (open circuit)

B1079

Refrigerant leaks

B2214

Control panel failure

B223B

Control panel improperly assembled

U1415

Coding not completed

U0019

Bus off (CAN1)

U0141

ETACS-ECU time-out

U0151

SRS-ECU time-out

U0154

Occupant classification-ECU time-out

U0155

Combination meter time-out

U0168

WCM time-out

U0184

Audio time-out

U0195

Satellite radio tuner time-out

U0197

Hands free module time-out

AUTOMATIC A/C DIAGNOSIS

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-9

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC B10C0, B10C1: Interior Temperature Sensor System

.

DTC SET CONDITION

• DTC B10C0 is set if there is a short circuit in the

interior temperature sensor input circuit.

• DTC B10C1 is set if there is a defective connec-

tor connection, or if there is an open circuit in the
harness.

.

TECHNICAL DESCRIPTION (COMMENT)

Current trouble

• The A/C-ECU, the interior temperature sensor, or

connector(s) or wiring between the two may be
defective.

Past trouble

• If DTC B10C0 or B10C1 is stored as a past trou-

ble, carry out diagnosis with particular emphasis
on wiring and connector(s) between the A/C-ECU
and the interior temperature sensor. If the con-
nectors 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 interior temperature sensor.

• 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)

AC702919

Interior Temperature Sensor Circuit

A/C-ECU

INTERIOR
TEMPERATURE
SENSOR

AB

AC702208AQ

Connector: C-109, C-122

C-122

C-109 (B)

AUTOMATIC A/C DIAGNOSIS

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-10

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

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
Use scan tool MB991958 to diagnose the CAN bus lines.
(1) Connect scan tool MB991958. Refer to "How to connect the

Scan Tool (M.U.T.-III)

P.55B-4

."

(2) Turn the ignition switch to "ON" position.
(3) Diagnose the CAN bus line.
Q: Is the check result satisfactory?

YES : Go to Step 2.
NO : Repair the CAN bus lines. Repair the CAN bus lines

(Refer to GROUP 54C, Diagnosis-Can Bus
Diagnostic Chart

P.54C-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 interior temperature sensor connector
C-122 and A/C-ECU connector C-109 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Are interior temperature sensor connector C-122 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

.

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link
connector