Inspection Procedure

HINT:

If there is an open or short in the engine coolant temperature sensor circuit, the ECM outputs DTCs. Perform troubleshooting with the "SFI System" (See DTC P0115 ENGINE COOLANT TEMPERATURE CIRCUIT MALFUNCTION; DTC P0117 ENGINE COOLANT TEMPERATURE CIRCUIT LOW INPUT; DTC P0118 ENGINE COOLANT TEMPERATURE CIRCUIT HIGH INPUT ).

1. PERFORM ACTIVE TEST BY TECHSTREAM 
   1. Connect Techstream to the DLC3.
   2. Ignition switch on (IG).
   3. Turn the tester on.
   4. Enter the following menus: Body Electrical / Combination Meter / Active Test.
   5. Check the operation by referring to the table below.

      Combination Meter: 

      ACTIVE TEST DETAIL - COMBINATION METER
      
      

      Tester Display	Test Part	Control Range
      Water Temperature Meter Operation	Engine coolant temperature receiver gauge	Low, Normal, Hi

      OK: 

      Needle indication is normal. 

   NG: REPLACE COMBINATION METER ASSEMBLY 

   OK: Go to next step 

2. READ VALUE OF TECHSTREAM (COOLANT TEMP) 
   1. Connect Techstream to the DLC3.
   2. Ignition switch on (IG).
   3. Turn the tester on.
   4. Enter the following menus: Powertrain / Engine and ECT / Data List.
   5. Check the values by referring to the table below.

      Engine and ECT: 

      DATA LIST - ENGINE AND ECT
      
      

      Tester Display	Measurement Item/Range	Normal Condition
      Coolant Temp	Engine coolant temperature/Min.: -40°C (-40°F), Max.: 140°C (284°F)	After warming up: 80 to 100°C (176 to 212°F)

      OK: 

      Coolant temperature displayed on the tester is between 80°C (176°F) and 95°C (203°F) after warming up. 

   NG:  GO TO ENGINE CONTROL SYSTEM (2GR-FE)

   OK: Go to next step 

3. REPLACE COMBINATION METER ASSEMBLY 
   1. Replace the combination meter assembly with a new or a normal one.

      OK: 

      The operation of the combination meter assembly returns to normal. 

   NG:  GO TO ENGINE CONTROL SYSTEM (2GR-FE)

   OK : END