Test G: DTC B1259 or DTC B1261 - Solar Radiation Sensor Open Circuit or Short to Ground

PINPOINT TEST G: DTC B1259 OR DTC B1261 - SOLAR RADIATION SENSOR OPEN CIRCUIT OR SHORT TO GROUND

G1:

G1-G2:

G3-G4:

G5-G6:

G6 Continued:

Normal Operation
Under normal operation, the solar radiation sensor receives a ground through circuit 31-LE42 (BK/OG). A 5-volt reference voltage is supplied to the solar radiation sensor from the DATC module through circuits 8-FA53 (WH/BL) and 10-FA53 (GY/VT).

Possible Causes
- An open in circuit 31-LE42 (BK/OG), 8-FA53 (WH/BL) or 10-FA53 (GY/VT).
- A short together in circuits 9-FA48 (BN/GN) and 8-FA48 (WH/GN) or 9-FA48 (BN/GN) and 10-FA53 (GY/VT).
- A short to ground in circuit 8-FA53 (WH/BL) or10-FA53 (GY/VT).
- Solar radiation sensor.
- DATC module.