Mitsubishi Colt Ralliart. Manual - part 310

 

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Mitsubishi Colt Ralliart. Manual - part 310

 

 

AC312553

AC312553

AC312553

AC312553

Harness side: A-08

Harness side: B-01

AC312553

AC312553DK

Test harness

Test 
harness

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54D-69

(4) Continuity between B-01 joint connector (CAN2) 

terminal No.9 and A-08 engine-ECU <M/T> or 
engine-CVT-ECU <CVT> connector terminal 
No.106

OK: Continuity (2 

 or less) 

AC312553

Harness side: A-08

Harness side: B-01

DL

Test harness

Test 
harness

(5) Continuity between B-01 joint connector (CAN2) 

terminal No.10 and A-08 engine-ECU <M/T> or 
engine-CVT-ECU <CVT> connector terminal 
No.105

OK: Continuity (2 

 or less) 

CAUTION

Strictly observe the specified wiring harness 
repair procedure. For details refer to 

P.54D-5

.

Q: Is the check result normal?

YES : 

<All the resistances measure 2 

Ω or less> 

Go to Step 3.

NO : 

<Either or all of the resistances measure 
more than 2 

Ω> Repair the wiring harness 

between the joint connector (CAN2) and the 
engine-ECU <M/T> or engine-CVT-ECU 
<CVT> connector.

Main

Index

Group

TOC

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54D-70

STEP 3. Resistance measurement at A-08 
engine-ECU <M/T> or engine-CVT-ECU <CVT> 
connector

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54D-5

.

AC509191

Connector: A-08

Harness side

AD

A-08 (GR)

(1) Remove the engine-ECU <M/T> or 

engine-CVT-ECU <CVT>, and measure at the 
equipment side.

AC312553

AC312553

AC312553

Equipment side: A-08

DJ

Test 
harness

Test 
harness

(2) Resistance at A-08 engine-ECU <M/T> or 

engine-CVT-ECU <CVT> connector terminal 
Nos.105 and 106

OK: 120 

± 20 

Q: Is the check result normal?

YES : 

<Within 120 

± 20 Ω> Power supply to the 

engine-ECU <M/T> or engine-CVT-ECU 
<CVT> may be suspected. Diagnose the 
fuel system. Refer to GROUP 13A 

− 

Troubleshooting 

P.13A-281

 <N/A> or 

GROUP 13B 

− Troubleshooting 

P.13B-282

 

<T/C>.

NO : 

<120 

± 20 Ω not within> Replace the 

engine-ECU <M/T> or engine-CVT-ECU 
<CVT>.

Main

Index

Group

TOC

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54D-71

Diagnostic Item 9: Diagnose when the M.U.T.-III cannot receive the data sent by ABS-ECU <vehicles 
without ASC> or ASC-ECU <vehicles with ASC>.

CAUTION

When servicing a CAN bus line, earth yourself by touching a metal object such as an unpainted water 
pipe. If you fail to do, a component connected to the CAN bus line may be broken.

COMBINATION
METER

ENGINE-ECU <M/T> OR
ENGINE-CVT-ECU <CVT>

ABS-ECU

OR
ASC-ECU

NOTE

: VEHICLES WITHOUT ASC
: VEHICLES WITH ASC

Wire colour code
B : Black 
LG : Light green
G : Green
L: Blue 
W : White
Y: Yellow
SB : Sky blue
BR : Brown 
O : Orange
GR : Grey  
R : Red 
P : Pink  
V : Violet
PU: Purple

Main

Index

Group

TOC

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54D-72

FUNCTION

The diagnostic result demonstrates that "Diagnose 
when the M.U.T.-III cannot receive the data sent by 
ABS-ECU <vehicles without ASC> or ASC-ECU 
<vehicles with ASC>" when the M.U.T.-III checks the 
periodically sent data from each ECU and cannot 
receive the ABS-ECU <vehicles without ASC> or 
ASC-ECU <vehicles with ASC> data only.

TROUBLE JUDGEMENT CONDITIONS

M.U.T.-III judges the trouble when the periodically 
sent data from ABS-ECU <vehicles without ASC> or 
ASC-ECU <vehicles with ASC> cannot be received 
and sent. 

PROBABLE CAUSES

• Damaged harness wires and connectors

• Power supply circuit malfunction of the ABS-ECU 

<vehicles without ASC> or ASC-ECU <vehicles 
with ASC>

• Malfunction of the ABS-ECU <vehicles without 

ASC> or ASC-ECU <vehicles with ASC>

DIAGNOSIS PROCEDURE

STEP 1. Connector check: B-01 joint connector 
(CAN2) and A-05 ABS-ECU <vehicles without 
ASC> or ASC-ECU <vehicles with ASC> 
connector

AC601294

A-05 (B)

AB

Harness side

<ABS-ECU>

<ASC-ECU>

Connector: A-05

AC313820AF

Connector: B-01

CAUTION

The strand end of the twist wire should be within 
10 cm from the connector. For details refer to 

P.54D-5

.

When checking the joint connector, ensure that its 
wiring harness side and its short pins are not dam-
aged.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the defective connector. Replace the 
joint connector as necessary.

Main

Index

Group

TOC

 

 

 

 

 

 

 

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