Test G

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

Test G1-G2:

Test G3-G4:

Test G5-G6:

Test G7-G8:

Normal Operation
Under normal operation, the solar radiation sensor receives a ground from the Dual Automatic Temperature Control (DATC) module through circuit 9-FA53 (BN/BL)/9-FA3 (BN/BL). 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 9-FA53 (BN/BL)/9-FA3 (BN/BL), 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) or 10-FA53 (GY/VT).
- Solar radiation sensor.
- DATC module.