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Mitsubishi Lancer Evolution X. Manual - part 3

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-37

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

P.54C-7

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

P.54C-7

CAUTION

The test wiring harness should be used. For details refer to

P.54C-7

(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

TEST
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-38

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

P.54C-7

CAUTION

The test wiring harness should be used. For details refer to

P.54C-7

(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

P.54C-7

CAUTION

The test wiring harness should be used. For details refer to

P.54C-7

(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: 120 ± 20 Ω

Q: Is the check result normal?

YES : Go to Step 5.
NO : Go to Step 13.

AC709707

Harness side: C-104

TEST
HARNESS

AC709707

Harness side: C-104

TEST
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-39

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

P.54C-7

CAUTION

The test wiring harness should be used. For details refer to

P.54C-7

(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

P.54C-7

CAUTION

The test wiring harness should be used. For details refer to

P.54C-7

(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: 120 ± 20 Ω

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

TEST
HARNESS

AC709707

Harness side: C-127

TEST
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-40

STEP 7. Check the wiring harness between joint connector
(CAN3) C-127 and shift lever connector 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

P.54C-7

CAUTION

The test wiring harness should be used. For details refer to

P.54C-7

(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 7 and 20.

OK: No continuity

Q: Is the check result normal?

YES : Go to Step 8.
NO : Go to Step 16.

STEP 8. Check the wiring harness between joint connector
(CAN4) A-14 and ECM connector B-10 <TC-SST> for
line-to-line short. Measure the resistance at joint
connector (CAN4) A-14.

CAUTION

A digital multimeter should be used. For details refer to

P.54C-7

CAUTION

The test wiring harness should be used. For details refer to

P.54C-7

(1) Disconnect joint connector (CAN4), and check that there is

continuity at the harness side of joint connector (CAN4).

(2) Check that there is continuity between joint connector

(CAN4) terminals 7 and 20.

OK: No continuity

Q: Is the check result normal?