toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Component Inspection|Page 1332 > < Coolant Temperature Sensor/Switch (For Computer)|Locations|Page 1329
Page 1
background image

Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
Component Inspection

PROCEDURE

1. CHECK VOLTAGE BETWEEN TERMINALS THW AND E2 OF ECM CONNECTOR.

-

Remove glove compartment.

-

Turn ignition switch ON.

-

Measure voltage between terminals THW and E2 of ECM connector.

Coolant temp. 

Voltage

20°C (68°F)  

0.5 - 3.4 volts

80°C (176°F)  

0.2 - 1.0 volts 

-

If not OK proceed to step 2.

-

If OK Check for momentary interruption.

2. CHECK ENGINE COOLANT TEMPERATURE SENSOR.

-

Disconnect the engine coolant temperature sensor connector.

Component Inspection|Page 1332 > < Coolant Temperature Sensor/Switch (For Computer)|Locations|Page 1329