Malfunction in Water Temperature Warning Light [08/2015 - ]: Procedure

1. Check if CAN communication DTCs are output. Refer to DIAGNOSIS SYSTEM [08/2015 - ] .

   Result

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

B → Refer to   10 

A: Go to next step 

1. Check the water temperature warning light.

   Result

   Result	Proceed to
   Water temperature warning light does not come on.	A
   Water temperature warning light remains on.	B

B → Refer to   4 

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: Body Electrical / Combination Meter / Active Test.
5. Perform the Active Test according to the display on the Techstream.
   COMBINATION METER
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Indicat. Lamp Coolant Hot	Water temperature warning light	OFF or ON	-

   OK

   Water temperature warning light operation is normal.

   RESULT
   
   

   Result	Proceed to
   OK	A
   NG (w/o Multi-information display)	B
   NG (w/ Multi-information display)	C

B → Refer to   8 

C → Refer to   14 

A: Go to next step 

1. Check for DTCs. Refer to DTC CHECK / CLEAR [08/2015 - ] for SFI System. Refer to DTC CHECK / CLEAR [08/2015 - ] for Meter/Gauge System).

   Result

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

B → Refer to   11 

C → Refer to   12 

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. Read the Data List according to the display on the Techstream.
   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	Yes
   	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 [08/2015 - ] .

   Result

   Result	Proceed to
   The data list values of the ECUs do not match (w/o Multi-information display).	A
   The data list values of the ECUs do not match (w/ Multi-information display).	B
   The data list values of the ECUs match.	C

   HINT: 

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

B → Refer to   7 

C → Refer to   13 

A: Go to next step 

1. Replace the meter circuit plate with a new or a known good one. Refer to DISASSEMBLY [08/2015 - ] .

   OK

   The operation of the water temperature warning light returns to normal.

NG → Refer to   9 

OK → END 

1. Replace the combination meter sub-assembly with a new or a known good one. Refer to REMOVAL [08/2015 - ] .

   OK

   The operation of the water temperature warning light returns to normal.

NG → Refer to   9 

OK → END