Mitsubishi 380. Manual - part 389

 

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Mitsubishi 380. Manual - part 389

 

 

AUTOMATIC TRANSMISSION DIAGNOSIS

AUTOMATIC TRANSMISSION

23A-96

STEP 12. Using diagnostic tool MB991958, check data list 
item 19: Stoplamp Switch.

CAUTION

To prevent damage to diagnostic tool MB991958, always 
turn the ignition switch to the "LOCK" (OFF) position 
before connecting or disconnecting diagnostic tool 
MB991958.
(1) Connect diagnostic tool MB991958 to the data link 

connector.

(2) Turn the ignition switch to the "ON" position.
(3) Set diagnostic tool MB991958 to the data reading mode.

• Item 19: Stoplamp Switch.

• When the brake pedal is depressed, the display on 

diagnostic tool MB991958 should be "ON."

• When the brake pedal is not depressed, the display 

on diagnostic tool MB991958 should be "OFF."

(4) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the switch operating properly?

YES : It can be assumed that this malfunction may be 

intermittent. Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

− How to 

Cope with Intermittent Malfunction 

P.00-14

.

NO :  Repeat Troubleshooting procedure. Go to Step 1.

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

NEXT PAGE

AUTOMATIC TRANSMISSION DIAGNOSIS

AUTOMATIC TRANSMISSION

23A-97

23A

(P0705): Transmission Inhibitor Switch System (Open Circuit)

CAUTION

If (P0705) has been set, TCL related DTC (C1397) 
is also set. After (P0705) has been diagnosed, 
don’t forget to erase DTC (C1397).

.

CIRCUIT OPERATION

• Battery positive voltage is applied to the transmis-

sion inhibitor switch (terminal 8) when the ignition 
switch is turned "ON."

• Battery positive voltage is applied to the A/T-ECU 

connector B-22 (terminal 25) when the transmis-
sion range is in the "P" range. The A/T-ECU 
judges that the transmission range is in the "P" 
range when the battery positive voltage is 
applied.

• Battery positive voltage is applied to the A/T-ECU 

connector B-22 terminal (23, 26 and 24) when the 
selector lever is in the ("R", "N," and "D," range). 
The A/T-ECU judges that the selector lever is in 
the ("R", "N," and "D," range) when the battery 
positive voltage is applied.

.

DTC SET CONDITIONS

Check Conditions, Judgement Criteria

• Transmission inhibitor switch: no signal detected. 

(30 seconds)

AC306223

A-13 (GR)

AB

CONNECTOR: A-13

1

4

7

8

2 3

5

13 14

17

15

12

16

11

10

9

6

16DB564A

COVER

AIR

CLEANER

A/T

CONTROL

UNIT

CONNECTORS:  B-19, B-22

AC210068

CONNECTOR: B-110

B-110 (B)

AE

TRANSMISSION
RANGE SWITCH

1

7

2

8

3

5

9

4

10

6

10DB093A

CONNECTOR:  D-14

FLOOR

WIRING

HARNESS

4

Y

2

15

ROOF

WIRING

HARNESS

D-14

10DB084A

CONNECTORS: C-214, 215

1
3 4

2
6

5

C-214

C-215

6

1
7

2

9

8

10

3

5

12

11

4

1314

PREVIOUS PAGE

AUTOMATIC TRANSMISSION DIAGNOSIS

AUTOMATIC TRANSMISSION

23A-98

.

OBD-II DRIVE CYCLE PATTERN

Start the engine, keep the vehicle stopped in "P," "R," 
"N," and "D" ranges respectively for more than one 
minute, and turn "LOCK" (OFF) the ignition switch. 
Then restart the engine, and stop the vehicle in "P," 
"R," "N," and "D" ranges respectively for more than 
one minute.

.

TROUBLESHOOTING HINTS (THE MOST 
LIKELY CAUSES FOR THIS CODE TO BE 
SET ARE:)

• Malfunction of the transmission inhibitor switch

• Malfunction of the ignition switch

• Damaged harness or connector

• Malfunction of the A/T-ECU

Circuit drawings

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

• Refer to component locations GROUP-

70

AUTOMATIC TRANSMISSION DIAGNOSIS

AUTOMATIC TRANSMISSION

23A-99

DIAGNOSIS

Required Special Tool:

• MB991958: Diagnostic Tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: MUT-III USB Cable

• MB991910: MUT-III Main Harness A

STEP 1. Using diagnostic tool MB991958, check data list 
item 34: Transmission Inhibitor Switch.

CAUTION

To prevent damage to diagnostic tool MB991958, always 
turn the ignition switch to the "LOCK" (OFF) position 
before connecting or disconnecting diagnostic tool 
MB991958.
(1) Connect diagnostic tool MB991958 to the data link 

connector.

(2) Turn the ignition switch to "ON" position.
(3) Set diagnostic tool MB991958 to the data reading mode.

• Item 34: Transmission Inhibitor Switch.

• Move the selector lever to "P," "R," "N," "D" and sport 

mode positions and confirm that the selected trans-
mission range match the positions shown on 
diagnostic tool MB991958. (Sport mode is indicated 
as "D" on the diagnostic tool).

(4) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Does the diagnostic tool indication correspond to the 

actual transmission range?
YES : 
It can be assumed that this malfunction is intermittent. 

Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

− How to 

Cope with Intermittent Malfunction 

P.00-14

.

NO (no correct transmission range is displayed) :  Go to 

Step 2. 

NO (Only "P" position is not displayed correctly) :  Go 

to Step 6.

NO (Only "R" position is not displayed correctly) :  Go 

to Step 12. 

NO (Only "N" position is not displayed correctly) :  Go 

to Step 17. 

NO (Only "D" position is not displayed correctly) :  Go 

to Step 22. 

NO [Only sport mode position is not displayed correctly 
("D" is not displayed.)] : 
Go to Step 29.

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

 

 

 

 

 

 

 

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