INSPECTION PROCEDURE 7: The Fluid Temperature Warning Lamp Illuminates too Frequently. < Except Canada >: Diagnosis

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

STEP 1. Scan tool (M.U.T.-III) special function
Check the deterioration level of the transmission fluid.

NOTE: The transmission fluid deterioration level is the accumulation of the values counted depending on the fluid temperature of a certain period of time, and it shows the thermal deterioration level of the transmission fluid.

Q: Is the deterioration level of the transmission fluid less than 210,000?
1. YES: Go to Step 2.
2. NO: Replace the transmission fluid.
STEP 2. Scan tool (M.U.T.-III) data list
Item 5: Transmission fluid temperature sensor (Refer to DATA LIST REFERENCE TABLE .)

Q: Is the check result normal?
1. YES: Go to Step 3.
2. NO: Diagnostic trouble code No. P0712, P0713: Diagnose the transmission fluid temperature sensor DTC P0712: MALFUNCTION OF TRANSMISSION FLUID TEMPERATURE SENSOR (SHORT); DTC P0713: MALFUNCTION OF TRANSMISSION FLUID TEMPERATURE SENSOR (OPEN) .
STEP 3. Air-cooled transmission fluid cooler system clogging check
Check if the air-cooled transmission fluid cooler system is clogged according to the following procedure.

CAUTION: Do not reuse the drained transmission fluid.
1. Remove the oil cooler hose.
2. Blow air into the oil cooler hose, and check that the air comes out from the opposite side.
3. Blow air into the oil cooler assembly (A in the figure), and check that the air comes out from the opposite side (B in the figure).
4. Install the parts, and replenish the transmission fluid to the specified quantity.
  Specified lubricant:
  
  Mitsubishi Motors Genuine CVTF-J4
  
  Quantity: Approximately 7.1 dm ³ (7.5 qt)
Q: Is the check result normal?
1. YES: Go to Step 4.
2. NO: Replace the part(s) having damage or other problems.
  
  Fig 1: Identifying Oil Cooler Assembly And Hose
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 4. Coolant system clogging check
Check if the coolant system is clogged according to the following procedure.

CAUTION: Do not reuse the drained coolant.
1. Drain the coolant.
2. Remove water feed hose and water return hose.
3. Blow air into the removed parts, and check that the air comes out from the opposite side.
4. Blow air into the coolant outlet (A in the figure), and check that the air comes out from the opposite side (B in the figure).
5. Install the parts, and replenish the coolant to the specified quantity. (Refer to ENGINE COOLANT REPLACEMENT )
Q: Is the check result normal?
1. YES: Go to Step 5.
2. NO: Replace the part(s) having damage or other problems.
  
  Fig 2: Checking Coolant System Clogging
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 5. Retest the system.
Q: Does a malfunction take place again?
1. YES: Replace the CVT assembly.
2. NO: Intermittent malfunction