Engine Coolant Temperature Gauge Malfunction [09/2015 - ]: Procedure

1. Check for DTCs. Refer to DTC CHECK / CLEAR [09/2015 - ] ).
   RESULT
   
   

   Result	Proceed to
   CAN communication system DTC is not output	A
   CAN communication system DTC is output	B

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - 08/2020] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2020 - ] )

Result: 

A 

See step  2

1. Operate the Techstream according to the display and select the Active Test.
   COMBINATION METER
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Water Temperature Meter Operation	Engine coolant temperature receiver gauge	LOW, NORMAL or HIGH	Perform the test with the vehicle stopped and the engine idling.

   HINT: 

   Confirm that the vehicle is stopped and the engine is idling.

   OK

   Needle indication is normal.

Result: 

NG 

REPLACE COMBINATION METER ASSEMBLY 

Refer to REMOVAL [09/2015 - ] )

Result: 

OK 

See step  3

1. Operate the Techstream according to the display and select the Data List.
   COMBINATION METER
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Coolant Temperature	Engine coolant temperature/Min.: -40 (-40), Max.: 140 (284)	After warming up: 80 to 105 (176 to 221)	Unit: °C (°F) If the value is -40 (-40): The sensor circuit is open If the value is 140 (284): The sensor circuit is shorted.

   OK

   Coolant temperature displayed on the Techstream is between 80°C (176°F) and 105°C (221°F) after warming up.

Result: 

NG 

REPLACE COMBINATION METER ASSEMBLY 

Refer to REMOVAL [09/2015 - ] )

Result: 

OK 

See step  4

1. Operate the Techstream according to the display and select the Data List.
   ENGINE
   
   

   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 the value is -40°C (-40°F): The sensor circuit is open. If the value is 140°C (284°F): The sensor circuit is shorted.

   OK

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

Result: 

NG 

GO TO SFI SYSTEM 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] )

Result: 

OK 

See step  5

1. Temporarily replace the combination meter with a new one. Refer to REMOVAL [09/2015 - ] ).

Result: 

NEXT 

See step  6

1. Check that the operation of the combination meter returns to normal. Refer to REMOVAL [09/2015 - ] ).

   OK

   Operation of combination meter returns to normal.

Result: 

OK 

END (COMBINATION METER ASSEMBLY IS DEFECTIVE) 

Result: 

NG 

REPLACE ECM 

Refer to REMOVAL [09/2015 - ] )