Meter / Gauge System Malfunction In Water Temperature Receiver Gauge

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST BY INTELLIGENT TESTER

READ VALUE OF INTELLIGENT TESTER

REPLACE COMBINATION METER

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

If there is an open or short in the engine coolant temperature sensor circuit, an SFI system DTC is output. If output, perform troubleshooting on the SFI system first.

1. Operate the intelligent tester according to the display and select the "Active Test".
   
   

   Combination meter:

   
   

   Item	Test Details	Diagnostic Note
   Water Temperature Meter Operation	LOW / NORMAL / HI	-

   OK:

   Needle indication is normal.
   

1. Operate the intelligent tester according to the display and select the "Data List".
   
   

   ECM:

   3GR-FE, 3GR-FSE
   

   
   

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

OK:

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

ECM:

3UZ-FE

Item	Measurement Item/Range (Display)	Normal Condition	Diagnostic Note
Coolant Temp	Engine coolant Temperature/ Min.: -40°C, Max.: 140°C	After warming up: 75 to 95°C (167 to 203°F)	If value is -40°C (-40°F), sensor circuit is open. If value is 140°C (284°F), sensor circuit is shorted.

OK:

Coolant temperature displayed on the tester is between 75°C (167°F) and 95°C (203°F) after warming up.

OK:

Operation of combination meter returns to normal.