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

1. Check for DTC (Refer to DIAGNOSIS SYSTEM [09/2015 - ] ).
   RESULT
   
   

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

Result:  B

B 

Go to CAN COMMUNICATION SYSTEM 

(Refer to PRECAUTION [09/2015 - ] )

Result:  A

A 

See step  2

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. Check the operation by referring to the table below.
   COMBINATION METER
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Water Temperature Meter Operation	Engine coolant temperature receiver gauge	Low, Normal, High	-

   OK

   Engine coolant temperature receiver gauge indication is normal.

Result:  NG

NG 

REPLACE NO. 1 METER ECU 

(Refer to DISASSEMBLY [09/2015 - ] )

Result:  OK

OK 

See step  3

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 / 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 / Min.: -40 (-40), Max.: 140 (284)	After warming up: 80 to 105 (176 to 221°F)	Unit: °C (°F) If value -40 (-40): sensor circuit open If value 140 (284): sensor circuit shorted

   OK

   Engine coolant temperature value displayed on the Techstream is almost the same as the engine coolant temperature receiver gauge indication.

6. Record the temperature displayed on the Techstream.

Result:  NG

NG 

REPLACE NO. 1 METER ECU 

(Refer to DISASSEMBLY [09/2015 - ] )

Result:  OK

OK 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Hybrid Control / Data List.
5. Check the values by referring to the table below.
   HYBRID CONTROL
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Engine 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 Techstream is almost the same as the previously recorded Techstream indication (Body Electrical / Combination Meter / Data List / Coolant Temperature).

Result:  OK

OK 

REPLACE NO. 1 METER ECU 

(Refer to DISASSEMBLY [09/2015 - ] )

Result:  NG

NG 

REPLACE HYBRID VEHICLE CONTROL ECU 

(Refer to REMOVAL [09/2015 - ] )