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

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

D1-D2:

D3-D4:

D5-D6:

D6 Continued:

Normal Operation
Under normal operation, the solar radiation sensor receives a ground through circuit GD145 (BK/BU). A 5-volt reference voltage is supplied to the solar radiation sensor from the EATC module through circuit (RH) VH416 (VT/GY) and (LH) VH417 (YE/OG).

Possible Causes
- An open in circuit GD145 (BK/BU), VH416 (VT/GY) or VH417 (YE/OG)
- A short to ground in circuit VH416 (VT/GY) or VH417 (YE/OG)
- Solar radiation sensor
- EATC module