Mitsubishi Evolution X. Manual - part 1143

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-207

STEP 14. Check the wiring harness between joint 
connector (CAN1) C-105 and combination meter connector 
C-04 for a short to power supply. Measure the voltage at 
joint connector (CAN1) C-105.
(1) Disconnect joint connector (CAN1), and measure the 

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

(2) Connect the negative battery terminal.
(3) Turn the ignition switch to the ON position.
(4) Measure the voltage between joint connector (CAN1) 

terminal 3 and body ground.

OK: 4.7 volts or less

(5) Measure the voltage between joint connector (CAN1) 

terminal 14 and body ground.

OK: 4.7 volts or less

Q: Do all the voltages measure 4.7 volts or less?

YES (vehicles with KOS) : Go to Step 15.
YES (vehicles with WCM) : Go to Step 16.
NO (vehicles with KOS and WCM) : Go to Step 48.

STEP 15. Check the wiring harness between joint 
connector (CAN1) C-105 and KOS-ECU connector C-05 for 
a short to power supply. Measure the voltage at joint 
connector (CAN1) C-105.
(1) Disconnect joint connector (CAN1), and measure the 

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

(2) Turn the ignition switch to the ON position.
(3) Measure the voltage between joint connector (CAN1) 

terminal 9 and body ground.

OK: 4.7 volts or less

AC608178

TEST 
HARNESS

Harness side: C-105

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Harness side: C-105

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Harness side: C-105

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DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-208

(4) Measure the voltage between joint connector (CAN1) 

terminal 22 and body ground.

OK: 4.7 volts or less

Q: Do all the voltages measure 4.7 volts or less?

YES : Go to Step 17.
NO :  Go to Step 49.

STEP 16. Check the wiring harness between joint 
connector (CAN1) C-105 and WCM connector C-07 for a 
short to power supply. Measure the voltage at joint 
connector (CAN1) C-105.
(1) Disconnect joint connector (CAN1), and measure the 

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

(2) Turn the ignition switch to the ON position.
(3) Measure the voltage between joint connector (CAN1) 

terminal 7 and body ground.

OK: 4.7 volts or less

(4) Measure the voltage between joint connector (CAN1) 

terminal 20 and body ground.

OK: 4.7 volts or less

Q: Do all the voltages measure 4.7 volts or less?

YES : Go to Step 17.
NO :  Go to Step 50.

AC608178

Harness side: C-105

BK

TEST 
HARNESS

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TEST 
HARNESS

Harness side: C-105

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Harness side: C-105

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DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-209

STEP 17. Check the wiring harness between joint 
connector (CAN1) C-105 and SRS-ECU connector C-37 for 
a short to power supply. Measure the voltage at joint 
connector (CAN1) C-105.
(1) Disconnect joint connector (CAN1), and measure the 

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

(2) Turn the ignition switch to the ON position.
(3) Measure the voltage between joint connector (CAN1) 

terminal 8 and body ground.

OK: 4.7 volts or less

(4) Measure the voltage between joint connector (CAN1) 

terminal 21 and body ground.

OK: 4.7 volts or less

Q: Do all the voltages measure 4.7 volts or less?

YES : Go to Step 18.
NO :  Go to Step 51.

STEP 18. Check the wiring harness between joint 
connector (CAN1) C-105 and occupant classification-ECU 
connector D-39-2 for a short to power supply. Measure the 
voltage at joint connector (CAN1) C-105.
(1) Disconnect joint connector (CAN1), and measure the 

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

(2) Turn the ignition switch to the ON position.
(3) Measure the voltage between joint connector (CAN1) 

terminal 11 and body ground.

OK: 4.7 volts or less

AC608178

TEST 
HARNESS

Harness side: C-105

BN

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Harness side: C-105

BO

TEST 
HARNESS

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TEST 
HARNESS

Harness side: C-105

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DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-210

(4) Measure the voltage between joint connector (CAN1) 

terminal 24 and body ground.

OK: 4.7 volts or less

Q: Do all the voltages measure 4.7 volts or less?

YES (vehicles without hands free system) : Go to Step 

20.

YES (vehicles with hands free system) : Go to Step 19.
NO  :  Go to Step 52.

STEP 19. Check the wiring harness between joint 
connector (CAN1) C-105 and hands free module connector 
C-11 for a short to power supply. Measure the voltage at 
joint connector (CAN1) C-105.
(1) Disconnect joint connector (CAN1), and measure the 

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

(2) Turn the ignition switch to the ON position.
(3) Measure the voltage between joint connector (CAN1) 

terminal 10 and body ground.

OK: 4.7 volts or less

(4) Measure the voltage between joint connector (CAN1) 

terminal 23 and body ground.

OK: 4.7 volts or less

Q: Do all the voltages measure 4.7 volts or less?

YES : Go to Step 20.
NO :  Go to Step 53.

AC608178

Harness side: C-105

BQ

TEST 
HARNESS

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TEST 
HARNESS

Harness side: C-105

BR

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Harness side: C-105

BS

TEST 
HARNESS