Mitsubishi Outlander GS45X. Manual - part 1629

DIAGNOSIS

TSB Revision

CVT

23A-73

DTC P0776: Abnormality in Secondary Pressure Solenoid Valve Function

.

DIAGNOSTIC FUNCTION

TCM conducts fault detection by measuring the dif-
ference between the target value and the actual 
value for the secondary pressure.

.

JUDGMENT CRITERIA

The following three conditions are met for three sec-
onds.

1. Engine speed is 450 r/min or more.

2. Power supply voltage is 10 volts or more.
3. Difference between target secondary pressure 

and actual secondary pressure is 1.20 MPa (174 
psi) or more.

.

PROBABLE CAUSES

• Trouble in CAN bus system

• Abnormal line pressure

• Malfunction of TCM

DIAGNOSTIC PROCEDURE

STEP 1. Using scan tool MB991958, diagnose the CAN bus 
line.
Use scan tool MB991958 to perform the CAN bus diagnosis.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Repair the CAN bus lines (Refer to GROUP 54C 

− 

Troubleshooting, Diagnostic Trouble Code Chart 

P.54C-19

).

STEP 2. Check other diagnostic trouble codes.
Q: Are other diagnostic trouble codes set?

YES : Carry out the appropriate troubleshooting.
NO :  Go to Step 3.

STEP 3. M.U.T.-III data list
Item 19: Secondary pressure (Refer to Data List Reference 
Table 

P.23A-127

.)

Q: Is the check result normal?

YES : Intermittent malfunction
NO :  Go to Step 4.

STEP 4. Line Pressure Check
Carry out "hydraulic test"(Refer to 

P.23A-27

).

Q: Is the check result normal?

YES : Go to Step 5.
NO :  Repair according to the hydraulic pressure test 

diagnosis table.

STEP 5. Symptom recheck after erasing diagnostic trouble 
code
Q: Is the check result normal?

YES : Intermittent malfunction
NO :  Replace TCM.

DIAGNOSIS

TSB Revision

CVT

23A-74

DTC P0778: Malfunction of Secondary Pressure Solenoid Valve

.

SOLENOID VALVE SYSTEM CIRCUIT

Refer to 

P.23A-62

.

.

DIAGNOSTIC FUNCTION

TCM determines malfunction by detecting the abnor-
mality in the secondary pressure solenoid valve.

.

DESCRIPTIONS OF MONITOR METHODS

• Specified amount of current is not flown to the 

secondary pressure solenoid valve because of an 
open or short circuit.

.

MONITOR EXECUTION

• Continuous

.

MONITOR EXECUTION CONDITIONS 

(OTHER MONITOR AND SENSOR)

Other Monitor (There is no temporary DTC stored 

in memory for the item monitored below)

• P0741: Abnormality in lockup function

• P0746: Abnormality in hydraulic control system 

function

• P0841: Abnormality in line pressure sensor func-

tion

• P0868: Secondary pressure drop

Sensor (The sensor below is determined to be 

normal)

• Not applicable

.

LOGIC FLOW CHARTS (Monitor Sequence)

AC609342

START

Yes

Yes

No

Continuous failure for 5 sec

No

No

Yes

Good

Malfunction

END

Yes

Yes

No

No

SEC solenoid circuit is ground short

Target current    750 mA

Monitored current    400 mA

Continuous failure for 1 sec

Monitored current    1.34 A

AD

DIAGNOSIS

TSB Revision

CVT

23A-75

.

DTC SET CONDITIONS

JUDGMENT CRITERIA

• Monitored current [target current: 750 mA or 

more]: 400 mA or less. (5 seconds)

• Monitored current: 1.34 A or more. (1 second)

.

OBD-II DRIVE CYCLE PATTERN

Ignition switch : ON (start the engine and keep it for 
10 seconds or more)

.

PROBABLE CAUSES

• Malfunction of valve body assembly (Faulty sec-

ondary pressure solenoid valve)

• Damaged wiring harness and connectors

• Malfunction of TCM

DIAGNOSTIC PROCEDURE

STEP 1. M.U.T.-III data list

• Item 35: Secondary PRS. SOL. output current

• Item 34: Secondary PRS. SOL. monitor current

OK: Check if the output current and monitoring cur-
rent differ largely.

Q: Is the check result normal?

YES : Intermittent malfunction
NO :  Go to Step 2.

STEP 2. Check the following connector:

• C-38 TCM connector

• B-125 CVT assembly connector

Check the terminals for a contact status problem and internal 
short circuit.
Q: Is the check result normal?

YES : Go to Step 3.
NO :  Repair the defective connector.

STEP 3. Check for open circuit and short to ground in the 
wiring harness between the TCM connector and the CVT 
assembly connector.
Between C-38 TCM connector (terminal No.2) and B-125 CVT 
assembly connector (terminal No.2)
Q: Is the check result normal?

YES : Go to Step 4.
NO :  Repair the wiring harness.

STEP 4. Secondary pressure solenoid valve single unit 
check
Refer to 

P.23A-146

.

Q: Is the check result normal?

YES : Go to Step 5.
NO :  Replace the valve body assembly.

STEP 5. Symptom recheck after erasing diagnostic trouble 
code
Q: Is the check result normal?

YES : Intermittent malfunction
NO :  Replace TCM.

DIAGNOSIS

TSB Revision

CVT

23A-76

DTC P0815: Malfunction of Paddle Shift Up Switch

PADDLE
SHIFT
SWITCH

TRANSAXLE
CONTROL MODULE

Paddle shift switch system circuit

AC702815

Connector: C-34

C-34 (BR)

AI

AC703253

Connector: C-38

Brake pedal

AB

AC703259

Connector: C-208

AB