Mitsubishi Evolution X. Manual — part 1142

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-203

STEP 8. Check the wiring harness between joint connector
(CAN1) C-105 and A/C-ECU connector C-22 for a short to
ground. Measure the resistance at joint connector (CAN1)
C-105.
(1) Disconnect joint connector (CAN1), and measure the

resistance at the wiring harness side of joint connector
(CAN1).

(2) Measure the resistance between joint connector (CAN1)

terminal 1 and body ground.

OK: 1 kilo ohm or more

(3) Measure the resistance between joint connector (CAN1)

terminal 12 and body ground.

OK: 1 kilo ohm or more

Q: Do all the resistances measure 1 kilo ohm or more?

YES (vehicles without MMCS) : Go to Step 9.
YES (vehicles with MMCS) : Go to Step 10.
NO : Go to Step 54.

STEP 9. Check the wiring harness between joint connector
(CAN1) C-105 and radio and CD player or CD changer
connector C-107 for a short to ground. Measure the
resistance at joint connector (CAN1) C-105.
(1) Disconnect joint connector (CAN1), and measure the

resistance at the wiring harness side of joint connector
(CAN1).

(2) Measure the resistance between joint connector (CAN1)

terminal 5 and body ground.

OK: 1 kilo ohm or more

AC608179

TEST
HARNESS

Harness side: C-105

CK

AC608179

Harness side: C-105

CL

TEST
HARNESS

AC608179

TEST
HARNESS

Harness side: C-105

CM

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-204

(3) Measure the resistance between joint connector (CAN1)

terminal 16 and body ground.

OK: 1 kilo ohm or more

Q: Do all the resistances measure 1 kilo ohm or more?

YES (vehicles without satellite radio) : Go to Step 12.
YES (vehicles with satellite radio) : Go to Step 11.
NO : Go to Step 55.

STEP 10. Check the wiring harness between joint
connector (CAN1) C-105 and CAN box unit connector C-15
for a short to ground. Measure the resistance at joint
connector (CAN1) C-105.
(1) Disconnect joint connector (CAN1), and measure the

resistance at the wiring harness side of joint connector
(CAN1).

(2) Measure the resistance between joint connector (CAN1)

terminal 5 and body ground.

OK: 1 kilo ohm or more

(3) Measure the resistance between joint connector (CAN1)

terminal 16 and body ground.

OK: 1 kilo ohm or more

Q: Do all the resistances measure 1 kilo ohm or more?

YES (vehicles without satellite radio) : Go to Step 12.
YES (vehicles with satellite radio) : Go to Step 11.
NO : Go to Step 56.

AC608179

Harness side: C-105

CN

TEST
HARNESS

AC608179

TEST
HARNESS

Harness side: C-105

CM

AC608179

Harness side: C-105

CN

TEST
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-205

STEP 11. Check the wiring harness between joint
connector (CAN1) C-105 and satellite radio tuner
connector C-18 for a short to ground. Measure the
resistance at joint connector (CAN1) C-105.
(1) Disconnect joint connector (CAN1), and measure the

resistance at the wiring harness side of joint connector
(CAN1).

(2) Measure the resistance between joint connector (CAN1)

terminal 2 and body ground.

OK: 1 kilo ohm or more

(3) Measure the resistance between joint connector (CAN1)

terminal 13 and body ground.

OK: 1 kilo ohm or more

Q: Do all the resistances measure 1 kilo ohm or more?

YES : Go to Step 12.
NO : Go to Step 57.

STEP 12. Check the wiring harness between joint
connector (CAN1) C-105 and ETACS-ECU connector C-301
for a short to ground. Measure the resistance at joint
connector (CAN1) C-105.
(1) Disconnect joint connector (CAN1) and ETACS-ECU

connector C-301, and measure the resistance at the wiring
harness side of joint connector (CAN1).

(2) Measure the resistance between joint connector (CAN1)

terminal 6 and body ground.

OK: 1 kilo ohm or more

AC608179

TEST
HARNESS

Harness side: C-105

CO

AC608179

Harness side: C-105

CP

TEST
HARNESS

AC608179

TEST
HARNESS

Harness side: C-105

CQ

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-206

(3) Measure the resistance between joint connector (CAN1)

terminal 19 and body ground.

OK: 1 kilo ohm or more

Q: Do all the resistances measure 1 kilo ohm or more?

YES : Go to Step 58.
NO : Repair the wiring harness between joint connector

(CAN1) C-105 and ETACS-ECU connector C-301.

STEP 13. 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.
(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 25.
NO : Go to Step 14.

AC608179

Harness side: C-105

CR

TEST
HARNESS

AC608178

TEST
HARNESS

Harness side: C-301

AL

AC608178

TEST
HARNESS

Harness side: C-301

AM