Mitsubishi Evolution X. Manual - part 488

DOOR

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42A-55

INSPECTION PROCEDURE 5: Selector "P" Position-linked Door Unlock Function does not Operate 
Normally. <Vehicles with TC-SST>

CAUTION

Whenever the ECU is replaced, ensure that the input and 
output signal circuits are normal.

.

OPERATION

ETACS-ECU determines whether the shift position is 
at "P" or not according to the shift position signal 
which is sent by shift lever.

.

TECHNICAL DESCRIPTION (COMMENT)

If the doors are not unlocked when the selector lever 
is shifted to the P position, a malfunction of the shift 
position signal input circuit(s) or ETACS-ECU is sus-
pected. Also, the selector "P" position-linked door 
unlock function may have been "disabled" with the 
customization function.

.

TROUBLESHOOTING HINTS

• Malfunction of shift lever

• Malfunction of ETACS-ECU

• Damaged wiring harness and connectors

DIAGNOSTIC PROCEDURE

Required Special Tools:

• MB992006: Extra fine probe

• MB991223: Harness set

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

• MB991824: Vehicles Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

STEP 1. Checking central door locking system operation
Check that the central door locking system works normally.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Refer to Inspection procedure 1 "Central door locking 

system does not work at all 

P.42A-31

."

AC503706

Selector "P" Position-linked Door Unlock Function

ETACS-ECU

CAN COMMUNICATION LINE
(CAN_L LINE)

CAN COMMUNICATION LINE
(CAN_H LINE)

INPUT SIGNAL

INHIBITOR SWITCH ("P" POSITION)

AF

SHIFT LEVER

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42A-56

STEP 2. Check the customize function.
Check that either of the followings other than "Disable" is set for 
"Auto door unlock by P position" with the customization func-
tion.

• Always enabled

Q: Is the check result normal?

YES : Go to Step 3.
NO :  Set either of the followings other than "Disable" for 

"Auto door unlock by P position" with the 
customization function (Refer to 

P.42A-120

).

STEP 3. Using scan tool MB991958, read CAN bus the 
diagnostic trouble code.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect 

scan tool (M.U.T.-III) 

P.42B-10

."

(2) Turn the ignition switch to the "ON" position.
(3) Check whether the CAN bus lines related DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Repair the CAN bus line (Refer to GROUP 54C, CAN 

bus diagnostics table 

P.54C-14

).

NO :  Go to Step 4.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

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42A-57

STEP 4. Using scan tool MB991958, read the diagnostic 
trouble code.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect 

scan tool (M.U.T.-III) 

P.42B-10

."

(2) Turn the ignition switch to the "ON" position.
(3) Check whether the shift lever related DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Diagnose the shift lever. Refer to GROUP 22C, 

Diagnostic trouble code chart 

P.22C-302

.

NO :  Go to Step 5.

STEP 5. Retest the system.
Check that shifting the selector lever to the P position unlocks 
the doors.
Q: Is the check result normal?

YES : No action is necessary and testing is complete.
NO :  Replace the ETACS-ECU. Check that the selector 

lever to the P position unlocks the doors normally.

POWER WINDOW DIAGNOSIS

TROUBLESHOOTING STRATEGY

M1429002700220

Refer to GROUP 00 

− How to Use Troubleshooting/Inspection 

Service Points, Contents of Troubleshooting 

P.00-7

.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

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DIAGNOSTIC TROUBLE CODE CHART

M1429006000096

CAUTION

On troubleshooting, if the ignition switch is turned ON while disconnecting connector(s), diagnostic 
trouble code(s) associated with other system may be set. On completion, check all systems for diag-
nostic trouble code(s). If diagnostic trouble code(s) are set, erase them all.

TROUBLE SYMPTOM CHART

M1429002800625

CAUTION

During diagnosis, a diagnostic trouble code associated with other system may be set when the igni-
tion switch is turned on with connector(s) disconnected. On completion, check all systems for diag-
nostic trouble code(s). If diagnostic trouble code(s) are set, erase them all.

Diagnostic trouble code 
No.

Diagnostic item

Reference 
page

L0730

P/W (DR) SW pulse1 disconnection

P.42A-59

L0732

P/W (DR) SW pulse2 disconnection

P.42A-61

L0734

P/W (DR) Above window position

P.42A-63

L0736

P/W (DR) Sensor fail (ground)

P.42A-64

L0740

P/W (DR) 3 times jam - protection

P.42A-66

L0746

P/W (DR) Parameter read fail

P.42A-67

L0750

P/W (DR) Position read fail

Trouble symptom

Inspection 
procedure 
number

Reference 
page

Power windows do not work at all.

1

P.42A-68

Driver's power window does not work by means of the power window main 
switch.

2

P.42A-75

Relevant power window(s) does not work by means of the front and rear 
passenger's power window sub switches.

3

P.42A-78

Front and/or rear passenger's power window(s) do not work by means of the 
power window main switch.

4

P.42A-94

The power window timer function does not work normally.

5

P.42A-98

Power window anti-trap function does not work normally (driver’s side seat).

6

P.42A-100

The window glass lowers automatically while it is rising.

7

P.42A-102