Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

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 TEMP)

Connect the intelligent tester to the DLC3.
Turn the ignition switch ON and turn the tester ON.

Perform the ACTIVE TEST according to the prompts displayed on the tester.

Combination meter

COMBINATION METER TEST DETAILS

Item	Test Details	Diagnostic Note
COOLANT TEMP	LOW / NORMAL / HIGH	Value selected during ACTIVE TEST is displayed

OK: Value selected during ACTIVE TEST is displayed.

NG: REPLACE COMBINATION METER ASSEMBLY

OK: Go TO NEXT STEP

READ VALUE OF DATA LIST (COOLANT TEMP)

Connect the intelligent tester to the DLC3.
Turn the ignition switch ON and the tester ON.

Read the DATA LIST according to the prompts displayed on the tester.

Combination meter

COMBINATION METER TEST DETAILS

Item	Measurement Item/Range (Display)	Normal Condition	Diagnostic Note
COOLANT TEMP	Coolant temperature / Min.: 0°C (32°F), Max.: 127.5°C (261.5°F)	After warming up: 80 to 95°C (176 to 203°F)	If the value is "0°C (32°F)" or "127.5°C (261.5°F)", sensor circuits are open or shorted.

OK: Vehicle's coolant temperature and tester value are the same.

NG: REPLACE COMBINATION METER ASSEMBLY

OK: GO TO SFI SYSTEM:

For 2AZ-FE, see ENGINE CONTROL SYSTEM (2AZ-FE) -- RAV4 .

For 2GR-FE, see ENGINE CONTROL SYSTEM (2GR-FE) -- RAV4 .