Mitsubishi Evolution X. Manual — part 1126
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-139
DIAGNOSTIC ITEM 20: Diagnose when the scan tool cannot receive the data sent by radio and CD
player or CD changer.
CAUTION
When servicing a CAN bus line, ground yourself by touching a metal object such as an unpainted
water pipe. If you fail to do so, a component connected to the CAN bus line may be damaged.
CAN-B Communication Circuit
ETACS-ECU
INTERFACE
CIRCUIT
INTERFACE
CIRCUIT
CAN DRIVE
CIRCUIT
HANDS FREE
MODULE
OCCUPANT
CLASSIFICATION-
ECU
SATELLITE
RADIO
TUNER
RADIO AND CD
PLAYER
NOTE
VEHICLES WITHOUT MITSUBISHI MULTI-COMMUNICATION SYSTEM (MMCS)
VEHICLES WITH MITSUBISHI MULTI-COMMUNICATION SYSTEM (MMCS)
CAN
TRANSCEIVER
CIRCUIT
CAN BOX UNIT
JOINT CONNECTOR
(CAN1)
FRONT SEAT
ASSEMBLY (LH)
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-140
.
FUNCTION
If the scan tool MB991958 cannot communicate with
the radio and CD player or CD changer, this diagno-
sis result will be set.
.
TROUBLE JUDGEMENT CONDITIONS
If a communication flag is not set for the radio and
CD player or CD changer, the ETACS-ECU deter-
mines that there is a failure.
.
TROUBLESHOOTING HINTS
• Malfunction of the connector [joint connector
(CAN1), radio and CD player or CD changer con-
nector improperly connected]
• Malfunction of the wiring harness [open circuit
between the radio and CD player or CD changer
connector and the joint connector (CAN1), power
supply circuit to the radio and CD player or CD
changer]
• Malfunction of the radio and CD player or CD
changer
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB992006: Extra Fine Probe
STEP 1. Check joint connector (CAN1) C-105 and radio and
CD player or CD changer connector C-107 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
CAUTION
The strand end of the twisted wire should be within 10 cm
(4 inches) from the connector. For details refer to
Q: Are joint connector (CAN1) C-105 and radio and CD
player or CD changer connector C-107 in good
condition?
YES : Go to Step 2.
NO : Repair the damaged parts.
AC708950
Connector: C-105
BL
AC708951BD
Connector: C-107
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-141
STEP 2. Check the wiring harness between joint connector
(CAN1) C-105 and radio and CD player or CD changer
connector C-107 for open circuit.
CAUTION
Strictly observe the specified wiring harness repair proce-
dure. For details refer to
(1) Disconnect joint connector (CAN1) C-105 and radio and CD
player or CD changer connector C-107, and check the
wiring harness.
(2) Check the wiring harness between joint connector (CAN1)
C-105 (terminal 5) and radio and CD player or CD changer
connector C-107 (terminal 23)
OK: Continuity exists (2
Ω or less)
(3) Check the wiring harness between joint connector (CAN1)
C-105 (terminal 16) and radio and CD player or CD changer
connector C-107 (terminal 33)
OK: Continuity exists (2
Ω or less)
Q: Is the wiring harness between joint connector (CAN1)
C-105 and radio and CD player or CD changer connector
C-107 in good condition?
YES : Check the power supply circuit of the radio and CD
player or CD changer. Refer to GROUP 54A, radio
and CD player
− Diagnosis <radio and CD player>
.
NO : Repair the wiring harness between joint connector
(CAN1) C-105 and radio and CD player or CD
changer connector C-107.
AC709707
AC709707 CF
Harness side: C-105
TEST
HARNESS
Harness side: C-107
TEST HARNESS
AC709707 CG
Harness side: C-105
Harness side: C-107
TEST
HARNESS
TEST HARNESS
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-142
DIAGNOSTIC ITEM 21: Diagnose when the scan tool cannot receive the data sent by CAN box unit.
CAUTION
When servicing a CAN bus line, ground yourself by touching a metal object such as an unpainted
water pipe. If you fail to do so, a component connected to the CAN bus line may be damaged.
CAN-B Communication Circuit
ETACS-ECU
INTERFACE
CIRCUIT
INTERFACE
CIRCUIT
CAN DRIVE
CIRCUIT
HANDS FREE
MODULE
OCCUPANT
CLASSIFICATION-
ECU
SATELLITE
RADIO
TUNER
RADIO AND CD
PLAYER
NOTE
VEHICLES WITHOUT MITSUBISHI MULTI-COMMUNICATION SYSTEM (MMCS)
VEHICLES WITH MITSUBISHI MULTI-COMMUNICATION SYSTEM (MMCS)
CAN
TRANSCEIVER
CIRCUIT
CAN BOX UNIT
JOINT CONNECTOR
(CAN1)
FRONT SEAT
ASSEMBLY (LH)
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