Engine Coolant Temperature Receiver Gauge Malfunction: Procedure

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

   Condition	Proceed to
   CAN communication DTC is not output	A
   CAN communication DTC is output	B

B → See step   9 

A: Go to next step 

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

   Condition	Proceed to
   Multiplex communication DTC is not output	A
   Multiplex communication DTC is output	B

B → See step   10 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the 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	Confirm that the vehicle is stopped, engine idling

   OK

   Engine coolant temperature receiver gauge indication is normal.

NG → See step   6 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the 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
   
   

   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)	If -40°C (-40°F): sensor circuit is open If 140°C (284°F) or more: sensor circuit is short

   RESULT
   
   

   Result	Proceed to
   Engine coolant temperature value displayed on the Techstream is almost the same as actual engine coolant temperature.	A
   Engine coolant temperature value displayed on the Techstream differs from actual engine coolant temperature (for 4GR-FSE).	B
   Engine coolant temperature value displayed on the Techstream differs from actual engine coolant temperature (for 2GR-FSE).	C

B → See step   7 

C → See step   11 

A: Go to next step 

1. Replace the combination meter assembly with a new or a known good one. Refer to REMOVAL .

   OK

   The operation of the combination meter assembly returns to normal.

   RESULT
   
   

   Result	Proceed to
   OK	A
   NG (for 4GR-FSE)	B
   NG (for 2GR-FSE)	C

B → See step   8 

C → See step   12 

A → END