Mitsubishi Evolution X. Manual — part 1100
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-35
.
FUNCTION
If a line-to-line short is present in the CAN-C lines,
this diagnosis result will be set.
.
TROUBLE JUDGEMENT CONDITIONS
If only diagnostic trouble code U0001 is set, the
ETACS-ECU determines that there is a failure.
.
TROUBLESHOOTING HINTS
• Malfunction of the connector (joint connectors or
ECU connectors improperly connected)
• Malfunction of the wiring harness (line-to-line
short in the CAN-C main or sub bus lines)
• Malfunction of the ECU (ECU on CAN-C lines
failed)
AC708948
Connector: A-05
A-05 (B)
AB
AC708949AM
Connector: A-14
AC709137
Connectors: B-10, B-107
AC
B-10 (GR)
B-107 (B)
AC708951CB
Connectors: C-27, C-127
C-27
C-127
AC708950BU
C-46
C-104
Connectors: C-46, C-104
AC708953AH
Connector: C-209
AC708972AY
Connector: C-301
ETACS-ECU
DIAGNOSIS
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CONTROLLER AREA NETWORK (CAN)
54C-36
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB992006: Extra Fine Probe
• 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
• MB992110: Power plant ECU check harness
• MB991997: ASC Check Harness
STEP 1. Check joint connector (CAN2) C-104, joint
connector (CAN3) C-127 and joint connector (CAN4) A-14
<TC-SST> 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 (CAN2) C-104, joint connector
(CAN3) C-127 and joint connector (CAN4) A-14 in good
condition?
YES : Go to Step 2.
NO : Repair the damaged parts.
STEP 2. Check the wiring harness between joint connector
(CAN2) C-104 and steering wheel senor connector C-209
for line-to-line short. Measure the resistance at joint
connector (CAN2) C-104.
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 joint connector (CAN2), and check that there is
continuity at the harness side of joint connector (CAN2).
(2) Check that there is continuity between joint connector
(CAN2) terminals 7 and 20.
OK: No continuity
Q: Is the check result normal?
YES : Go to Step 3.
NO : Go to Step 11.
AC709707
Harness side: C-104
AG
TEST
HARNESS
TEST
HARNESS
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-37
STEP 3. Check the wiring harness between joint connector
(CAN2) C-104 and S-AWC-ECU connector C-46 for
line-to-line short. Measure the resistance at joint
connector (CAN2) C-104.
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 joint connector (CAN2), and check that there is
continuity at the harness side of joint connector (CAN2).
(2) Check that there is continuity between joint connector
(CAN2) terminals 5 and 16.
OK: No continuity
Q: Is the check result normal?
YES : Go to Step 4.
NO : Go to Step 12.
STEP 4. Check the wiring harness between joint connector
(CAN2) C-104 and ETACS-ECU connector C-301 for
line-to-line short. Measure the resistance at joint
connector (CAN2) C-104.
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 joint connector (CAN2), and check that there is
continuity at the harness side of joint connector (CAN2).
(2) Check that there is continuity between joint connector
(CAN2) terminals 6 and 19.
OK: No continuity
Q: Is the check result normal?
YES : Go to Step 5.
NO : Go to Step 13.
AC709707
Harness side: C-104
AH
TEST
HARNESS
TEST
HARNESS
AC709707
Harness side: C-104
AI
TEST
HARNESS
TEST
HARNESS
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-38
STEP 5. Check the wiring harness between joint connector
(CAN3) C-127 and ASC-ECU connector A-05 for line-to-line
short. Measure the resistance at joint connector (CAN3)
C-127.
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 joint connector (CAN3), and check that there is
continuity at the harness side of joint connector (CAN3).
(2) Check that there is continuity between joint connector
(CAN3) terminals 6 and 19.
OK: No continuity
Q: Is the check result normal?
YES <M/T> : Go to Step 6.
YES <TC-SST> : Go to Step 7.
NO : Go to Step 14.
STEP 6. Check the wiring harness between joint connector
(CAN3) C-127 and ECM connector B-10 <M/T> for
line-to-line short. Measure the resistance at joint
connector (CAN3) C-127.
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 joint connector (CAN3), and check that there is
continuity at the harness side of joint connector (CAN3).
(2) Check that there is continuity between joint connector
(CAN3) terminals 4 and 15.
OK: No continuity
Q: Is the check result normal?
YES : Check intermediate connector C-131, and repair if
necessary. If the intermediate connector is in good
condition, repair the wiring harness between joint
connector (CAN2) C-104 and joint connector (CAN3)
C-127.
NO : Go to Step 15.
AC709707
Harness side: C-127
AJ
TEST
HARNESS
TEST
HARNESS
AC709707
Harness side: C-127
AK
TEST
HARNESS
TEST
HARNESS
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