Mitsubishi Evolution X. Manual - part 1110

DIAGNOSIS

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CONTROLLER AREA NETWORK (CAN)

54C-75

(4) Measure the voltage between joint connector (CAN2) 

terminal 19 and body ground.

OK: 4.7 volts or less

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

YES : Go to Step 4.
NO :  Go to Step 12.

STEP 4. Check the wiring harness between joint connector 
(CAN3) C-127 and ASC-ECU connector A-05 for a short to 
power supply. Measure the voltage at joint connector 
(CAN3) C-127.
(1) Disconnect joint connector (CAN3), and measure the 

voltage at the wiring harness side of joint connector 
(CAN3).

(2) Turn the ignition switch to the ON position.
(3) Measure the voltage between joint connector (CAN3) 

terminal 6 and body ground.

OK: 4.7 volts or less

(4) Measure the voltage between joint connector (CAN3) 

terminal 19 and body ground.

OK: 4.7 volts or less

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

YES <M/T> : Go to Step 5.
YES <TC-SST> : Go to Step 6.
NO  :  Go to Step 13.

AC709708

Harness side: C-104

AI

TEST 
HARNESS

AC709708

TEST 
HARNESS

Harness side: C-127

AJ

AC709708

Harness side: C-127

AK

TEST 
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-76

STEP 5. Check the wiring harness between joint connector 
(CAN3) C-127 and ECM connector B-10 <M/T> for a short to 
power supply. Measure the voltage at joint connector 
(CAN3) C-127.
(1) Disconnect joint connector (CAN3), and measure the 

voltage at the wiring harness side of joint connector 
(CAN3).

(2) Turn the ignition switch to the ON position.
(3) Measure the voltage between joint connector (CAN3) 

terminal 4 and body ground.

OK: 4.7 volts or less

(4) Measure the voltage between joint connector (CAN3) 

terminal 15 and body ground.

OK: 4.7 volts or less

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

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 14.

STEP 6. Check the wiring harness between joint connector 
(CAN3) C-127 and shift lever connector C-27 for a short to 
power supply. Measure the voltage at joint connector 
(CAN3) C-127.
(1) Disconnect joint connector (CAN3), and measure the 

voltage at the wiring harness side of joint connector 
(CAN3).

(2) Turn the ignition switch to the ON position.
(3) Measure the voltage between joint connector (CAN3) 

terminal 7 and body ground.

OK: 4.7 volts or less

AC709708

TEST 
HARNESS

Harness side: C-127

AL

AC709708

Harness side: C-127

AM

TEST 
HARNESS

AC709708

TEST 
HARNESS

Harness side: C-127

AN

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-77

(4) Measure the voltage between joint connector (CAN3) 

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 7.
NO :  Go to Step 15.

STEP 7. Check the wiring harness between joint connector 
(CAN4) A-14 and ECM connector B-10 <TC-SST> for a 
short to power supply. Measure the voltage at joint 
connector (CAN4) A-14.
(1) Disconnect joint connector (CAN4), and measure the 

voltage at the wiring harness side of joint connector 
(CAN4).

(2) Turn the ignition switch to the ON position.
(3) Measure the voltage between joint connector (CAN4) 

terminal 7 and body ground.

OK: 4.7 volts or less

(4) Measure the voltage between joint connector (CAN4) 

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 8.
NO :  Go to Step 14.

AC709708

Harness side: C-127

AO

TEST 
HARNESS

AC709708

TEST 
HARNESS

Harness side: A-14

AP

AC709708

Harness side: A-14

AQ

TEST 
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-78

STEP 8. Check the wiring harness between joint connector 
(CAN4) A-14 and transaxle assembly connector B-107 for a 
short to power supply. Measure the voltage at joint 
connector (CAN4) A-14.
(1) Disconnect joint connector (CAN4), and measure the 

voltage at the wiring harness side of joint connector 
(CAN4).

(2) Turn the ignition switch to the ON position.
(3) Measure the voltage between joint connector (CAN4) 

terminal 6 and body ground.

OK: 4.7 volts or less

(4) Measure the voltage between joint connector (CAN4) 

terminal 19 and body ground.

OK: 4.7 volts or less

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

YES : Go to Step 9.
NO :  Go to Step 16.

STEP 9. Check the wiring harness between joint connector 
(CAN3) C-127 and joint connector (CAN2) C-104 for a short 
to ground. Measure the resistance at joint connector 
(CAN3) C-127.

CAUTION

Disconnect the negative battery terminal. For details refer 
to 

P.54C-7

.

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 measure the 

resistance at the wiring harness side of joint connector 
(CAN3).

(2) Turn the ignition switch to the ON position.

AC709708

TEST 
HARNESS

Harness side: A-14

AR

AC709708

Harness side: A-14

AS

TEST 
HARNESS