Diagnosis Procedure: Notes

INSPECTION START
Do you have CONSULT-III?

Yes or No

Yes: GO TO 2.

No: GO TO 3.
CHECK COOLING FAN OPERATION
With CONSULT-III
1. Turn ignition switch ON.
2. Select "COOLING FAN" in "ACTIVE TEST" mode with CONSULT-III.
3. Check that cooling fans-1 and -2 operates at each speed (LOW/HI).
  OK or NG
  
  OK: GO TO 4.
  
  NG: Check cooling fan control circuit. (Go to "PROCEDURE A ".)
CHECK COOLING FAN OPERATION
Without CONSULT-III
1. Perform IPDM E/R auto active test and check cooling fan motor operation.
  Refer to "AUTO ACTIVE TEST ".
2. Check that cooling fans-1 and -2 operates at each speed (Low/High).
  OK or NG
  
  OK: GO TO 4.
  
  NG: Check cooling fan control circuit. (Go to "PROCEDURE A ".)
CHECK COOLING SYSTEM FOR LEAK
Refer to ENGINE COOLANT .

OK or NG

OK: GO TO 5.

NG: Check the following for leak.
- Hose
- Radiator
- Water pump
CHECK RADIATOR CAP
Refer to RADIATOR .

OK or NG

OK: GO TO 6.

NG: Replace radiator cap.
CHECK COMPONENT PARTS
Check the following.
- Thermostat. (Refer to WATER PUMP .)
- Engine coolant temperature sensor. (Refer to "COMPONENT INSPECTION ".)
  OK or NG
  
  OK: GO TO 7.
  
  NG: Replace malfunctioning component parts.
CHECK MAIN 13 CAUSES
If the cause cannot be isolated, go to "MAIN 12 CAUSES OF OVERHEATING ".

INSPECTION END