Mitsubishi L200. Manual - part 285

 

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Mitsubishi L200. Manual - part 285

 

 

AC510056AD

Harness side

B-10 (B)

Connector: B-10

AC510056AG

B-14 (B)

Connector: B-14

Harness side

AC510057

Harness side

A/T-ECU

C-20

AC

Connector: C-20

A/T-ECU

<RHD>

<LHD>

AC509613AG

Connector: C-52 <LHD>

C-52

Harness side

AC509934

Connectors: C-207, C-208 <LHD>

Junction block (Front view)

C-208

CX

Harness side

C-207

AC509936

Connectors: C-207, C-208 <RHD>

Harness side

C-208

C-207

BZ

Junction block 
(Front view)

TROUBLESHOOTING

AUTOMATIC TRANSMISSION

23A-47

OPERATION
The inhibitor switch detects the selector lever posi-
tion (P, R, N,D, 2 or L) which the driver has selected, 
and sends the information to the A/T-ECU.

DIAGNOSIS CODE SET CONDITIONS
If the inhibitor switch has not been sending any sig-
nal for at least 30 seconds, an open circuit may be 
present and diagnosis code No.P1770 (P0705) is 
set.

PROBABLE CAUSES

• Malfunction of the inhibitor switch

• Damaged harness wires and connectors

• Malfunction of the A/T-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list
Item 34: Inhibitor switch 

P.23A-103

 (Refer to data list 

reference table).

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Cope with Intermittent 

Malfunction ).

NO <none of the selector lever positions are 
displayed on M.U.T.-III> : 

Go to Step 2.

NO <only one of the selector lever positions is not 
displayed on M.U.T.-III> : 

Go to Step 6.

TROUBLESHOOTING

AUTOMATIC TRANSMISSION

23A-48

STEP 2. Check the inhibitor switch.
Refer to 

P.23A-113

.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the inhibitor switch.

STEP 3. Connector check: B-14 Inhibitor switch 
connector, C-208 J/B connector, B-10 and C-52 
intermediate connector
Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the defective connector.

STEP 4. Check the harness between inhibitor 
switch connector B-14 terminal No.7 and J/B 
connector C-208 terminal No.2.
Check the power supply line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the wiring harness.

STEP 5. M.U.T.-III data list
Item 34: Inhibitor switch 

P.23A-103

 (Refer to data list 

reference table).

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Replace the A/T-ECU.

STEP 6. Check the inhibitor switch.
Refer to 

P.23A-118

.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Replace the inhibitor switch.

STEP 7. Connector check: B-14 inhibitor switch 
connector, C-20 A/T-ECU connector, B-10 
intermediate connector.
Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the defective connector.

STEP 8. Check the harness between inhibitor 
switch connector B-14 terminal No.1, 8, 2, 3, 4, 5 
and A/T-ECU connector C-20 terminal No.55, 66, 
56, 67, 68, 58.
Check the output line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the wiring harness.

TROUBLESHOOTING

AUTOMATIC TRANSMISSION

23A-49

Code No.P1770 (P0705): Inhibitor switch system <5A/T>

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

AC903907

INHIBITOR 
SWITCH

IGNITION 
SWITCH (IG1)

Inhibitor switch system circuit

A/T-ECU

<LHD>
<RHD>

AC510056AD

Harness side

B-10 (B)

Connector: B-10

AC510056AG

B-14 (B)

Connector: B-14

Harness side

AC510057

Harness side

A/T-ECU

C-20

AC

Connector: C-20

A/T-ECU

<RHD>

<LHD>

AC509930AG

Connector: C-34 <RHD>

C-34

Harness side

AC509613AG

Connector: C-52 <LHD>

C-52

Harness side

AC509934

Connectors: C-207, C-208 <LHD>

Junction block (Front view)

C-208

CX

Harness side

C-207

AC509936

Connectors: C-207, C-208 <RHD>

Harness side

C-208

C-207

BZ

Junction block 
(Front view)

TROUBLESHOOTING

AUTOMATIC TRANSMISSION

23A-50

OPERATION
The inhibitor switch detects the selector lever posi-
tion (P, R, N, D) which the driver has selected, and 
sends the information to the ECU.

DIAGNOSIS CODE SET CONDITIONS
If the inhibitor switch has not been sending any sig-
nal for at least 30 seconds, an open circuit may be 
present and diagnosis code No.P1770 (P0705) is 
set.

PROBABLE CAUSES

• Malfunction of the inhibitor switch

• Damaged harness wires and connectors

• Malfunction of the A/T-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list
Item 34: Inhibitor switch (Refer to Data List Refer-
ence Table 

P.23A-103

).

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Cope with Intermittent 

Malfunction ).

NO none of the selector lever positions are 
displayed on M.U.T.-III : 

Go to Step 2.

NO only one of the selector lever positions is not 
displayed on M.U.T.-III : 

Go to Step 6.

STEP 2. Check the inhibitor switch.
Refer to 

P.23A-118

.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the inhibitor switch.

 

 

 

 

 

 

 

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