Heating and Air Conditioning

DTC 21 Solar Sensor Circuit

CIRCUIT DESCRIPTION

Detection Item:

A photo diode in the solar sensor detects solar radiation and sends signals to the A/C ECU (Combination meter ECU).

Wiring Diagram:

Step 1 - 2:

Step 3 - 4:

INSPECTION PROCEDURE

HINT: In case of using the LEXUS hand- held tester, start the inspection step 1 and in case of not using the LEXUS hand-held tester. start from step 2.