Diagnosis Procedure

STEP 1. Check the idle speed.
Q: Does the idle speed meet the standard values?
- YES: Go to Step 2.
- NO: Refer to IDLE SPEED CHECK or IDLE SPEED CHECK .
STEP 2. Check whether the transaxle and engine mount is loose or damaged.
Q: Are the transaxle and engine mount loose or damaged?
- YES: Tighten or replace the part. Then go to Step 7.
- NO: Go to Step 3.
STEP 3. Check that the oil level is up to the lower edge of the filler plug hole.
Q: Is the oil level up to the lower edge of the filler plug hole?
- YES: Go to Step 4.
- NO: Refill DiaQueen NEW MULTI GEAR OIL API classification GL-3, SAE 75W-80. Then go to Step 7.
  
  Fig 1: Identifying Filler Plug Hole
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 4. Check for the specified oil.
Q: Is the specified oil DiaQueen NEW MULTI GEAR OIL API classification GL-3, SAE 75W-80?
- YES: Go to Step 5.
- NO: If in doubt, replace the oil. Refer to TRANSAXLE OIL REPLACEMENT . Then go to Step 7.
STEP 5. Remove the transaxle. Check the axial play of the input and output shafts.
Q: Does the axial play of the input and output shafts meet the standard value?
- YES: Go to Step 6.
- NO: Adjust the axial play of the input and output shafts. Then go to Step 7.
STEP 6. Disassemble the transaxle. Check the gears for wear and damage.
Q: Are the gears worn or damaged?
- YES: Replace the gears. Go to Step 7.
- NO: Go to Step 7.
STEP 7. Retest the systems.
Q: Is the noise or vibration still there?
- YES: Return to Step 1.
- NO: The procedure is complete.