Test D: DTC B2826 Or B2827 - Front Evaporator Temp Sensor Circuit Failure Or Short To Ground
PINPOINT TEST D: DTC B2826 OR B2827 - FRONT EVAPORATOR TEMP SENSOR CIRCUIT FAILURE OR SHORT TO GROUNDNormal Operation
Under normal operation, the evaporator discharge air temperature sensor receives a ground from the HVAC module - electronic automatic temperature control (DATC) through circuit RH104 (BU/BN). A 5-volt reference voltage is supplied to the evaporator discharge air temperature sensor from the HVAC module - DATC through circuit VH406 (VT/BN).
- DTC B2826 Front Evaporator Temp Sensor Circuit Failure - The module senses no voltage drop on the sensor reference voltage circuit, indicating an open circuit.
- DTC B2827 Front Evaporator Temp Sensor Short to Ground - The module senses excessive voltage drop on the sensor reference voltage circuit, indicating a short directly to ground.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Evaporator discharge air temperature sensor
- HVAC module - DATC
D1-D3:
D3-D5:
