Mitsubishi Evolution X. Manual — part 1130
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-155
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-156
CAN Communication Circuit
ETACS-ECU
INTERFACE
CIRCUIT
INTERFACE
CIRCUIT
CAN DRIVE
CIRCUIT
HANDS FREE
MODULE
OCCUPANT
CLASSIFICATION-
ECU
SATELLITE
RADIO
TUNER
RADIO AND CD
PLAYER OR CD
CHANGER
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-157
.
FUNCTION
If a short to power supply or ground is present in both
CAN_H and CAN_L lines, this diagnosis result will be
set.
.
TROUBLE JUDGEMENT CONDITIONS
If a communication flag is set for the ETACS-ECU,
no communication is present through the CAN-B
line, and diagnostic trouble code U0019 is set, the
ETACS-ECU determines that there is a failure.
.
TROUBLESHOOTING HINTS
• Malfunction of the connector (ETACS-ECU con-
nector improperly connected)
• Malfunction of the wiring harness (CAN_H and
CAN_L lines are short to power supply or ground
on the CAN-B line.)
• Malfunction of ECUs
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB992006: Extra Fine Probe
AC708950CC
C-04
C-05
C-105
Connectors: C-04, C-05, C-105
AC708951CF
Connectors: C-07, C-11, C-15, C-18, C-22,
C-37, C-107
C-07
C-15
C-18
C-22 (B)
C-11
C-37 (Y)
C-107
AC708972AY
Connector: C-301
ETACS-ECU
AC708954AW
Connector: D-39-2
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-158
STEP 1. Check the wiring harness between ETACS-ECU
connector C-301 and body ground for a short to power
supply. Measure the voltage at ETACS-ECU connector
C-301.
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
(1) Disconnect ETACS-ECU connector C-301, and measure
the voltage at the wiring harness side of ETACS-ECU
connector.
(2) Turn the ignition switch to the ON position.
(3) Measure the voltage between ETACS-ECU connector
terminal 6 and body ground.
OK: 4.7 volts or less
(4) Measure the voltage between ETACS-ECU connector
terminal 7 and body ground.
OK: 4.7 volts or less
Q: Do all the voltages measure 4.7 volts or less?
YES : Go to Step 2.
NO : Go to Step 13.
AC608178
TEST
HARNESS
Harness side: C-301
AL
AC608178
TEST
HARNESS
Harness side: C-301
AM
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