Engine Coolant Temperature Receiver Gauge Malfunction: Procedure

1. Check if a 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

B → See step   8 

A: Go to next step 

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

   Tester Display	Test Part	Control Range	Diagnostic Note
   Water Temperature Meter Operation	Engine coolant temperature receiver gauge	Low, Normal, High	-

   OK

   Engine coolant temperature receiver gauge indication is normal.

NG → See step   10 

OK: Go to next step 

1. Check if the SFI system output the DTC. Refer to DTC CHECK / CLEAR for 2AR-FE. Refer to DTC CHECK / CLEAR for 2GR-FE).

   Result

   Result	Proceed to
   The DTC is not output.	A
   The DTC is output (for 2AR-FE).	B
   The DTC is output (for 2GR-FE).	C

B → See step   5 

C → See step   9 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus:
   1. for Combination Meter: Body Electrical / Combination Meter / Data List.
   2. for Engine and ECT: Powertrain / Engine and ECT / Data List.
5. Check the values by referring to the table below.
   COMBINATION METER
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Coolant Temperature	Engine coolant temperature/-40 to 140°C (-40 to 284°F)	After warming up: 75 to 100°C (167 to 212°F)	If -40°C (-40°F): Sensor circuit open If 140°C (284°F) or more: Sensor circuit shorted

   ENGINE AND ECT
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Coolant Temp	Coolant temperature/Min.: -40°C (-40°F), Max.: 140°C (284°F)	75 to 100°C (167 to 212°F): After warming up	Stored as Freeze Frame Data This is the engine coolant temperature.
   	HINT:  After warming up the engine, the engine coolant temperature is 75 to 100°C (167 to 212°F). After a long soak, the engine coolant temperature, intake air temperature and ambient air temperature are approximately equal. If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted. Check if the engine overheats when the value indicates higher than 135°C (275°F).

   Result

   Result	Proceed to
   The Data List values of the ECUs match.	A
   The Data List values of the ECUs do not match (for 2AR-FE).	B
   The Data List values of the ECUs do not match (for 2GR-FE).	C

   HINT: 

   • When the Data List values of the ECUs match, an internal malfunction of the combination meter assembly is suspected.
   • When the Data List values of the ECUs do not match, a signal output error of the ECM or an internal malfunction of the combination meter assembly is suspected

B → See step   6 

C → See step   7 

A → See step   10