Mitsubishi 380. Manual - part 396

AUTOMATIC TRANSMISSION DIAGNOSIS

AUTOMATIC TRANSMISSION

23A-124

STEP 6. Measure the transmission inhibitor switch output 
voltage at A/T-ECU connector B-22 by using check 
harness special tool MB992045. ("R" position)
Measure the voltage between terminal 23 and ground.

• When transmission range is "P," voltage should measure 

0.5 volt or less.

• When transmission range is "R," voltage should equal bat-

tery positive voltage.

• When transmission range is "N," voltage should measure 

0.5 volt or less.

• When transmission range is "D," voltage should measure 

0.5 volt or less.

• When transmission range is sport mode, voltage should 

measure 0.5 volt or less.

Q: Is the measured voltage within the specified range?

YES : Go to Step 8.
NO :  Turn the ignition switch to the "LOCK" (OFF) position. 

Go to Step 7.

16DB564A

COVER

AIR

CLEANER

A/T

CONTROL

UNIT

CONNECTORS:  B-19, B-22

10DB095A

B-22 HARNESS 

CONNECTOR:

AUTOMATIC TRANSMISSION DIAGNOSIS

AUTOMATIC TRANSMISSION

23A-125

STEP 7. Check the harness for damage between A/T-ECU 
connector B-22 terminal 23 and transmission inhibitor 
switch connector B-110 terminal 7.
Q: Is the harness wire in good condition?

YES : Go to Step 14.
NO :  Repair or replace the harness wire.

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

AUTOMATIC TRANSMISSION DIAGNOSIS

AUTOMATIC TRANSMISSION

23A-126

STEP 8. Measure the transmission inhibitor switch output 
voltage at A/T-ECU connector B-22 by using check 
harness special tool MB992045. ("N" position)
Measure the voltage between terminal 26 and ground.

• When transmission range is "P," voltage should measure 

0.5 volt or less.

• When transmission range is "R," voltage should measure 

0.5 volt or less.

• When transmission range is "N," voltage should equal bat-

tery positive voltage.

• When transmission range is "D," voltage should measure 

0.5 volt or less.

• When transmission range is sport mode, voltage should 

measure 0.5 volt or less.

Q: Is the measured voltage within the specified range?

YES : Go to Step 10.
NO :  Turn the ignition switch to the "LOCK" (OFF) position. 

Go to Step 9.

16DB564A

COVER

AIR

CLEANER

A/T

CONTROL

UNIT

CONNECTORS:  B-19, B-22

10DB096A

B-22 HARNESS 

CONNECTOR:

AUTOMATIC TRANSMISSION DIAGNOSIS

AUTOMATIC TRANSMISSION

23A-127

STEP 9. Check the harness for damage between A/T-ECU 
connector B-22 terminal 26 and transmission inhibitor 
switch connector B-110 terminal 4.
Q: Is the harness wire in good condition?

YES : Go to Step 14.
NO :  Repair or replace the harness wire.

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