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 
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AC608179

TEST 
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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 
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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 
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Harness side: C-301

AM