B1340
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Perceived temperature in cabin too high or too low compared to the set temperature.
Solar Sensor. Open Circuit / Communication Fault
Fault symptoms
Perceived temperature in cabin too high or too low compared to the set temperature.
Conditions
The following conditions apply:
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Open circuit or communication error.
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The solar sensor sends an identification pulse continuously, 5V-0V-5V. The control module searches for identification pulses during time periods of 440 ms. When five successive measurements have been made with no pulse pattern, a DTC is generated.
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The diagnostic trouble code is deleted after the ignition has been switched on 20 times if the malfunction conditions have not been fulfilled.
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When the diagnostic trouble code has been generated, the control module uses a default value, that being the latest valid value. When ignition is turned on, 0 W/m
2
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Diagnostic help
Check that a value is obtained from all 5 directions.
