Engine Coolant Temperature Receiver Gauge Malfunction: Procedure

1. Check if CAN communication DTC is output. Refer to DIAGNOSIS SYSTEM .

   Result

   Result	Proceed to
   CAN communication DTC is not output.	A
   CAN communication DTC is output.	B. Refer to DIAGNOSTIC TROUBLE CODE CHART

B → GO TO CAN COMMUNICATION SYSTEM 

A: Go to next step 

1. Connect Techstream to the DLC3.
2. Ignition switch on (IG).
3. Turn Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Active Test.
5. Check the operation by referring to the values in the table below.
   COMBINATION METER:
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   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 

1. Connect Techstream to the DLC3.
2. Ignition switch on (IG).
3. Turn Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Data List.
   COMBINATION METER:
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Coolant Temperature	Engine coolant temperature/Min.: 0°C (32°F), Max.: 127.5°C (261.5°F)	After warming up: 80 to 95°C (176 to 203°F)	If -40°C (-40°F): Sensor circuit open If 140°C (284°F) or more: Sensor circuit shorted

   OK

   Engine coolant temperature value displayed on Techstream is almost the same as needle indication.

NG → REPLACE COMBINATION METER ASSEMBLY 

OK: Go to next step 

1. Connect Techstream to the DLC3.
2. Ignition switch on (IG).
3. Turn Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Data List.
5. Check the values by referring to the values in the table below.
   ENGINE AND ECT (FOR 2AR-FE):
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   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)	-

   ENGINE AND ECT (FOR 2GR-FE):
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Coolant Temp	Engine coolant temperature: Min.: -40°C (-40°F), Max: 215°C (419°F)	After warming up: 80 to 100°C (176 to 212°F)	-

   OK

   Engine coolant temperature value displayed on Techstream is almost the same as actual engine coolant temperature.

NG → REPLACE ECM 

OK: Go to next step 

1. Replace the combination meter assembly to a new or a normal one.

   OK

   The operation of the combination meter assembly returns to normal.

NG → REPLACE ECM 

OK → END