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B1746

Read the instructions below then start the fault diagnostic procedure.

Symptom: Outdoor temperature function on SID display faulty.

B1746


Outdoor Temperature Sensor. Open Circuit / Short to B+


Fault symptoms

Outdoor temperature function on SID display faulty.

Conditions

Open circuit: Resistance higher than 415 kohm

Short-circuit to ground: Resistance lower than 100 ohms

Diagnostic help

The outdoor temperature sensor can be read using Tech 2. Both the unfiltered and the filtered values can be read.

The outdoor temperature sensor can be adjusted ±5 °C.

Check wiring harness.

Jiggle the wiring harness at several points and in different directions to reveal intermittent breaks and short-circuits in the leads. Observe the multimeter, test lamp or diagnostic instrument during the test.