Inspection Procedure

HINT:

• If DTC U0100 has been stored, troubleshoot the CAN communication system first.

• 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.

PERFORM ACTIVE TEST BY INTELLIGENT TESTER (COOLANT HOT)

(a) Connect the intelligent tester with CAN VIM to the DLC3.

(b) Turn the ignition switch ON and turn the tester ON.

(c) Enter the following menus: DIAGNOSIS/ METER/ ACTIVE TEST

METER

METER

Item

Test Details

Diagnostic Note

COOLANT HOT

ON: Engine coolant temperature warning light flashes OFF: Engine coolant temperature warning light turns off

-

COOLANT COOL

ON: Engine coolant temperature indicator light flashes OFF: Engine coolant temperature indicator light turns off

-

Item

Test Details

Diagnostic Note

COOLANT TEMP

HIGH: Engine coolant temperature warning light flashes NORMAL: Engine coolant temperature warning light and indicator light turn off LOW: Engine coolant temperature indicator light illuminates

-

Both the engine coolant temperature warning light and indicator light are operated in accordance with the tester instructions.

REPLACE COMBINATION METER ASSEMBLY

READ VALUE OF INTELLIGENT TESTER (COOLANT TEMP)

(a) Connect the intelligent tester with CAN VIM to the DLC3.

(b) Turn the ignition switch ON and turn the tester ON.

(c) Select the item below from the Data List, and read the value displayed on the intelligent tester.

METER

Item

Measurement Item/Range (Display)

Normal Condition

Diagnostic Note

COOLANT TEMP

Engine coolant temperature / Min.: 0°C,Max.: 127.5°C

After warming up: 75 to 105°C (167 to 221°F)

• If the value is 0°C (32°F), the sensor circuit is open.

• If the value is 127.5°C (262°F), the sensor circuit is shorted.

Coolant temperature displayed on the tester is between 75°C (167°F) and 105°C (221 °F) after warming up.

GO TO SFI SYSTEM

REPLACE COMBINATION METER ASSEMBLY

Warning Buzzer does not Sound

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