DTC 21

DTC B1421/21 Solar Sensor Circuit (Passenger Side)

DESCRIPTION

DTC Detection Condition:

The solar sensor, which is installed on the upper side of the instrument panel, detects sunlight and controls the air conditioning in AUTO mode. The output voltage from the solar sensor varies according to the amount of sunlight. When the sunlight increases, the output voltage increases. As the sunlight decreases, the output voltage decreases. The A/C amplifier detects output voltage from the solar sensor.

HINT: If DTC B1224 is output at the same time, troubleshoot DTC B1224 first.

Wiring Diagram:

Step 1:

Step 1 (Continued)-3:

Step 3 (Continued)-5:

Step 5 (Continued):

INSPECTION PROCEDURE