Test D: DTC B1261 - Solar Radiation Sensor Circuit Short to Ground

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

D1:

D1-D3:

D3-D5:

D5-D6:

Normal Operation
Under normal operation, the solar radiation sensor receives a ground through circuit 676 (PK/OG). A 5-volt reference voltage is supplied to the solar radiation sensor from the EATC module through circuit 476 (BN/YE).

Possible Causes
- An open in circuit 476 (BN/YE) or 676 (PK/OG)
- A short to ground in circuit 476 (BN/YE)
- Solar radiation sensor
- Electronic automatic temperature control (EATC) module