Mitsubishi L200. Manual — part 286

TROUBLESHOOTING

AUTOMATIC TRANSMISSION

23A-51

STEP 3. Connector check: B-14 Inhibitor switch
connector, C-208 J/B connector, C-52 <LHD> or
C-34 <RHD> and B-10 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 (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 :

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.3, 2, 8, 1 A/T-
ECU connector C-20 terminal No.67, 56, 66, 55.
Check the output line for open circuit.

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Repair the wiring harness.

Code No.P1771 (P0705) Inhibitor switch system <4A/T>

INHIBITOR SWITCH SYSTEM CIRCUIT
Refer to

P.23A-46

.

OPERATION
Refer to

P.23A-46

.

DIAGNOSIS CODE SET CONDITIONS
If the inhibitor switch has been sending multiple sig-
nals for at least 30 seconds, the circuit may be open
and diagnosis code No.P1771 (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. Check the inhibitor switch.
Refer to

P.23A-113

.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Replace the inhibitor switch.

STEP 2. Connector check: B-14 Inhibitor switch
connector, B-10 intermediate connector, C-20 A/
T-ECU connector
Check for the contact with terminals.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair the defective connector.

STEP 3. 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 or short circuit.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Repair the wiring harness.

STEP 4. 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?

TROUBLESHOOTING

AUTOMATIC TRANSMISSION

23A-52

YES :

Intermittent malfunction (Refer to GROUP

00

− How to Cope with Intermittent

Malfunction ).

NO :

Replace the A/T-ECU.

Code No.P1771 (P0705): Inhibitor switch system <5A/T>

INHIBITOR SWITCH SYSTEM CIRCUIT
Refer to

P.23A-49

.

OPERATION
Refer to

P.23A-49

.

DIAGNOSIS CODE SET CONDITIONS
If the inhibitor switch has been sending multiple sig-
nals for at least 30 seconds, the circuit may be open
and diagnosis code No.P1771 (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. Check the inhibitor switch.
Refer to

P.23A-118

.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Replace the inhibitor switch.

STEP 2. Connector check: B-14 Inhibitor switch
connector, B-10 intermediate connector C-20 A/T-
ECU connector
Check for the contact with terminals.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair the defective connector.

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

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Repair the wiring harness.

STEP 4. 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 :

Replace the A/T-ECU.

TROUBLESHOOTING

AUTOMATIC TRANSMISSION

23A-53

Code No.P1773 (P0750) Low-reverse solenoid valve system

23

FUSIBLE
LINK

RELAY
BOX

A/T
CONTROL
RELAY

A/T CONTROL
SOLENOID
VALVE ASSEMBLY

NOTE

:

:

:

:

:

UNDERDRIVE
SOLENOID VALVE

OVERDRIVE
SOLENOID VALVE

LOW AND REVERSE
SOLENOID VALVE

DAMPER CLUTCH
CONTROL SOLENOID
VALVE

SECOND
SOLENOID VALVE

A/T-ECU

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

Solenoid Valve System Circuit <4A/T>

AC903908

23

FUSIBLE
LINK

RELAY
BOX

A/T
CONTROL
RELAY

A/T CONTROL
SOLENOID
VALVE ASSEMBLY

A/T-ECU

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

Solenoid Valve System Circuit <5A/T>

AC903909

NOTE

:

:

:

:

:

UNDERDRIVE
SOLENOID VALVE

OVERDRIVE
SOLENOID VALVE

LOW AND REVERSE
SOLENOID VALVE

: REDUCTION

SOLENOID VALVE

DAMPER CLUTCH
CONTROL SOLENOID
VALVE

SECOND
SOLENOID VALVE

TROUBLESHOOTING

AUTOMATIC TRANSMISSION

23A-54