Engine Coolant Temperature Receiver Gauge Malfunction: Procedure

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

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

B → REPAIR CIRCUITS INDICATED BY OUTPUT DTCS 

A: Go to next step 

1. Check if MULTIPLEX communication DTC is output. Refer to DTC CHECK / CLEAR .
   RESULT
   
   

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

B → REPAIR CIRCUITS INDICATED BY OUTPUT DTCS 

B: Go to next step 

1. Connect Techstream to the DLC3.
2. Turn the engine 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 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. Turn the engine 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 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)	-

   OK

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

NG → GO TO SFI SYSTEM 

OK: Go to next step 

OK

The operation of the combination meter assembly returns to normal.

NG → REPLACE ECM 

OK → END