B0521

B0521 02

Evaporator Temperature Sensor Circuit, Short to Ground







On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Ignition ON.

Fault criteria:
- Voltage on control module sensor input is below 0.2 V.

System reaction to a fault:
- The control module uses outside temperature as a substitute value.

Checking the wiring harness
- Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:
- Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:

Test value:
- Evaporator Temperature Sensor