Test D: DTC B1947 Or DTC B2014 - Evaporator Temperature Sensor Circuit Open or Short to Ground

PINPOINT TEST D: DTC B1947 OR DTC B2014 - EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN OR SHORT TO GROUND

D1-D3:

D4-D5:

D6-D7:

Normal Operation
Under normal operation, the evaporator temperature sensor receives a ground from the electronic automatic temperature control (EATC) module through circuit RH111 (GY/BU)/(BK). A 5-volt reference voltage is supplied to the evaporator discharge air temperature sensor from the EATC module through circuit VH406 (VT/BN)/(LG/BK).

Possible Causes
- An open in circuit RH111 (GY/BU)/(BK) or VH406 (VT/BN)/(LG/BK)
- A short to ground in circuit VH406 (VT/BN)/(LG/BK)
- An short together in circuit RH111 (GY/BU)/(BK) and VH406 (VT/BN)/(LG/BK)
- Evaporator temperature sensor
- EATC module