DTC B1A63:12, B1A63:13, B1A64:12, B1A64:13

id070200730000

DTC B1A63:12, B1A63:13, B1A64:12, B1A64:13

Solar radiation sensor system

POSSIBLE CAUSE

•  Light amount shone on the solar radiation sensor is insufficient (Circuit is normal)

•  Solar radiation sensor malfunction

•  Open or short circuit in wiring harness between climate control unit and solar radiation sensor

DTC B1A63:12, B1A63:13, B1A64:12, B1A64:13	Solar radiation sensor system
POSSIBLE CAUSE	• Light amount shone on the solar radiation sensor is insufficient (Circuit is normal) • Solar radiation sensor malfunction • Open or short circuit in wiring harness between climate control unit and solar radiation sensor

Diagnostic Procedure

STEP	INSPECTION		ACTION
1	• Inspect the solar radiation sensor. (See SOLAR RADIATION SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is it normal?	Yes	Go to the next step.
1		No	Replace the solar radiation sensor. (See SOLAR RADIATION SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
2	• Disconnect the climate control unit connector and the solar radiation sensor connector. • Is there continuity between the following terminals of the climate control unit and the solar radiation sensor? ― 2D—C ― 2F—B ― 2K—A	Yes	Go to the next step.
2		No	Repair the wiring harness.
3	• Is there a short circuit to ground in the wiring harness between the following terminals of the climate control unit terminal and solar radiation sensor? ― 2D—C ― 2F—B	Yes	Repair the wiring harness.
3		No	Inspect the connection of the climate control unit connector.