Mitsubishi Evolution X. Manual — part 1264
AUTO A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55-7
DIAGNOSTIC FUNCTION
M1552019800176
HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)
Required Special Tools:
• 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
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.
1. Ensure that the ignition switch is at the "LOCK" (OFF)
position.
2. Start up the personal computer.
3. Connect special tool MB991827 to special tool MB991824
and the personal computer.
4. Connect special tool MB991910 to special tool MB991824
5. Connect special tool MB991910 to the data link connector.
6. Turn the power switch of special tool MB991824 to the "ON"
position.
NOTE: When the special tool MB991824 is energized, the
special tool MB991824 indicator light will be illuminated in a
green color.
7. Start the M.U.T.-III system on the personal computer.
NOTE: Disconnecting the scan tool special tool MB991824 is
the reverse of the connecting sequence, making sure that the
ignition switch is at the "LOCK" (OFF) position.
HOW TO READ AND ERASE DIAGNOSTIC
TROUBLE CODES
Required Special Tools:
• 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
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
AUTO A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55-8
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.
NOTE: If the battery voltage is low, diagnostic trouble codes will
not be output. Check the battery if scan tool MB991958 does
not display.
1. Connect the scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "System select" from the start-up screen.
4. Select "From 2006 MY" of "Model Year." When the "Vehicle
Information" is displayed, check the contents.
5. Select "AUTO A/C" from "System List," and press the "OK"
button.
NOTE: When the "Loading Option Setup" list is displayed,
check the applicable item.
6. Select "Diagnostic Trouble Code."
7. If a DTC is set, it is shown.
8. Choose "Erase DTCs" to erase the DTC.
HOW TO DIAGNOSE THE CAN BUS LINE
Required Special Tools:
• 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
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.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "CAN bus diagnosis" from the start-up screen.
4. When the vehicle information is displayed, confirm that it
matches the vehicle whose CAN bus lines will be
diagnosed.
• If they match, go to step 8.
• If not, go to step 5.
5. Select "view vehicle information" button.
6. When the vehicle information is displayed, confirm again
that it matches the vehicle which is diagnosed CAN bus line.
• If they match, go to step 8.
• If not, go to step 5.
7. Press the "OK" button.
8. When the options are displayed, choose the options (mark
the check) and then select "OK".
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
AUTO A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55-9
DIAGNOSTIC TROUBLE CODE CHART
M1554004901110
CAUTION
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 of repairs, check all systems for DTC
code(s). If DTC code(s) are set, erase them all.
NOTE: The diagnostic trouble codes marked by * are
set from the ETACS-ECU.
Diagnostic
trouble code No.
Diagnostic item
Reference
page
B10C0
Interior temperature sensor system (short circuit)
B10C1
Interior temperature sensor system (open circuit)
B1000
Control panel communication error
B1003
Mode dial SW error
B1018
Temperature control dial SW error
B1021
Fan dial SW error
B1031
Fin thermo sensor system (short circuit)
B1032
Fin 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
U0245
Audio visual navigation unit CAN timeout
AUTO A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55-10
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 connector connec-
tion, or if there is an open circuit in the harness.
.
TECHNICAL DESCRIPTION (COMMENT)
Current trouble
• The A/C-ECU, the interior temperature sensor, or connec-
tor(s) or wiring between the two may be defective.
Interior Temperature Sensor Circuit
A/C-ECU
JOINT
CONNECTOR (2)
INTERIOR
TEMPERATURE
SENSOR
AC708626
AC708950AP
C-06
Connectors: C-06, C-102
C-102 (B)
AC708951AI
C-22 (B)
Connector: C-22
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