Mitsubishi Outlander GS45X. Manual - part 1338

 

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Mitsubishi Outlander GS45X. Manual - part 1338

 

 

DIAGNOSIS

TSB Revision

ELECTRONIC CONTROL AWD

27C-75

DIAGNOSIS

STEP 1. Scan tool MB991958 CAN bus diagnostics
Use scan tool MB991958 to diagnose the CAN bus lines.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Repair the CAN bus line (Refer to GROUP 54C 

− 

Troubleshooting/CAN Bus Diagnostics Table 

P.54C-17

). Then go to Step 4.

STEP 2. Scan tool MB991958 DTC of other systems
Use M.U.T.-III to check that the DTC B222C is set in the 
ETACS-ECU.
Q: Is the DTC set?

YES : Troubleshoot the relevant diagnostic trouble code, 

and then go to Step 4.

NO :  Go to Step 3.

STEP 3. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Turn the ignition switch from the "LOCK" (OFF) position to 

the "ON" position.

(3) Check if the DTC is set.
Q: Is the DTC U1415 set?

YES : Replace AWD-ECU (Refer to 

P.27C-95

). Then go to 

Step 4 .

NO :  The trouble can be an intermittent malfunction such 

as loose connector fit, wiring harness open circuit 
(Refer to GROUP 

− How to Use Troubleshooting/How 

to Cope with Intermittent Malfunctions 

P.00-15

).

STEP 4. Check whether the DTC is reset.
Q: Is the DTC U1415 set?

YES : Diagnose again from Step 1.
NO :  This procedure is complete.

TROUBLE SYMPTOM CHART

TSB Revision

ELECTRONIC CONTROL AWD

27C-76

TROUBLE SYMPTOM CHART

M1274000900075

CAUTION

During diagnosis, a DTC associated with other 
system may be set when the ignition switch is 
turned on with connector(s) disconnected. On 
completion, confirm all systems for DTC(s). If 
DTC(s) are set, erase them all.

NOTE: 

*

Tight corner braking phenomenon: When a 

AWD vehicle makes sharp cornering in a paved road 
at low speed (ex. parallel parking), there is a differ-
ence in turning radius between front and rear wheels. 
If such a difference can no longer be compensated 
by tire slippage, the vehicle behaves as if it is under 
braking.

Trouble symptom

Inspection 
procedure

Reference pages or 
actions

Scan tool MB991958 cannot communicate with the 
electronic control AWD system.

1

P.27C-77

The switch position of the drive mode selector does not 
match with the indicator display in the combination meter.

2

P.27C-80

The tight corner braking phenomenon

*

 appears with the 

drive mode selector in the FWD or AWD position.
NOTE: The vehicle is tuned so that the tight corner braking 
phenomenon appears at a certain level with the drive mode 
selector in the LOCK position.

3

P.27C-85

No DTC is set even when the AWD/LOCK indicator lamps 
flash.

4

P.27C-89

SYMPTOM PROCEDURES

TSB Revision

ELECTRONIC CONTROL AWD

27C-77

SYMPTOM PROCEDURES

Inspection Procedure 1: Scan tool MB991958 cannot Communicate with the Electronic Control AWD 
System.

ETACS-ECU

FUSIBLE
LINK

34

IGNITION
SWITCH (IG1)

IG1
RELAY

AWD-ECU

ACA02791

SYMPTOM PROCEDURES

TSB Revision

ELECTRONIC CONTROL AWD

27C-78

.

COMMENTS ON TROUBLE SYMPTOM

If scan tool MB991958 cannot communicate with the 
electronic control AWD system, the CAN bus lines 
may have a problem. If the electronic control AWD 
system is not in operation (in case of no AWD opera-
tion), the AWD-ECU power supply circuit system or 
AWD-ECU may have a problem.

.

TROUBLESHOOTING HINTS

• Damaged wiring harness and connectors

• AWD-ECU malfunction

DIAGNOSIS

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

STEP 1. Scan tool MB991958 CAN bus diagnostics
Use scan tool MB991958 to diagnose the CAN bus lines.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Repair the CAN bus line (Refer to GROUP 54C 

− 

Troubleshooting/CAN Bus Diagnostics Table 

P.54C-17

). On completion, go to Step 2.

STEP 2. Check the following connector:
Check the connectors below for improper engagement, termi-
nal damage or terminal drawn in the connector case.

• C-128 AWD-ECU connector

• C-309, C-313 ETACS-ECU connector

• C-138 intermediate connector

Q: Are the connectors and terminals in good condition?

YES : Go to Step 3.
NO :  Repair the connector(s) or terminal(s). Then go to 

Step 8.

AC901227AC

C-128

C-138

Connectors: C-128, C-138

AC901228AC

C-313
(BR)

C-309
(B)

ETACS-ECU 
(front view)

Connectors: C309, C-313

 

 

 

 

 

 

 

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