Test C: DTC B2426, DTC B2427, DTC B2795 or DTC B2796 - A/C Solar Radiation Sensor Open Circuit or Short to Ground

PINPOINT TEST C: DTC B2426, DTC B2427, DTC B2795 OR DTC B2796 - A/C SOLAR RADIATION SENSOR OPEN CIRCUIT OR SHORT TO GROUND

C1:

C1-C3:

C3-C5:

C5-C6:

Normal Operation
Under normal operation, the solar radiation sensor receives a ground through circuit GD116 (BK/VT). A 5-volt reference voltage is supplied to the solar radiation sensor from the electronic automatic temperature control (EATC) or dual automatic temperature control (DATC) module through circuit (LH) VH416 (VT/GY) and circuit (RH) VH417 (YE/OG).

Possible Causes
- An open in circuit GD116 (BK/VT), VH417 (YE/OG) or VH416 (VT/GY)
- A short to ground in circuit VH417 (YE/OG) or VH416 (VT/GY)
- Solar radiation sensor
- DATC/EATC module