Malfunction in Water Temperature Warning Light: Procedure

1. Check if CAN communication DTCs are output. Refer to DIAGNOSIS SYSTEM .

   Result

   Result	Proceed to
   CAN communication DTCs are not output.	A
   CAN communication DTCs are output.	B

B → See step   5 

A: Go to next step 

1. Check for DTCs. Refer to DTC CHECK / CLEAR for SFI System. Refer to DTC CHECK / CLEAR for Meter/Gauge System).

   Result

   Result	Proceed to
   DTCs are not output.	A
   SFI system DTCs are output.	B
   DTC B1503 is output.	C

B → See step   6 

C → See step   7 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus:
   1. for Combination Meter: Body Electrical / Combination Meter / Data List.
   2. for Engine: 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 / 0 to 127.5°C (0 to 261.5°F)	After warming up: 75 to 100°C (167 to 212°F)	-

   ENGINE AND ECT
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Stored as Freeze Frame Data
   Coolant Temp	Engine 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 Stored as Freeze Frame Data This is the engine coolant temperature
   	Diagnostic Note: 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 may be open or shorted. Check if the engine overheats when the value indicates higher than 135°C (275°F).

   NOTE:

   Enter inspection mode. Refer to INSPECTION MODE PROCEDURE .

   Result

   Result	Proceed to
   The data list values of the ECUs do not match.	A
   The data list values of the ECUs match.	B

   HINT: 

   When the Data List values of the ECUs do not match, a signal output error of the ECM is suspected.

B → See step   8 

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 water temperature warning returns to normal.

NG → See step   9 

OK → END