35 Ambient Air Sensor Short Circuit (Check Alarm)

Thermo King Alarm Code
Description Corrective Action
Ambient Air Sensor Short Circuit (Check Alarm)
  • Sensor circuit resistance lower than 200 ohms.
  • Temperature above 80 C (176 F).
  • Indicates:
  • - Short circuit to sensor
  • - Defective or wrong sensor
  • - Defective relay board
  • - Defective cable No. 1
  • - Defective controller
  • Check sensor resistance between pins 13 and 14 on plug J15. Resistance must be 2,000 ohms at 25 C (77 F).
  • Check cable No. 1 between controller and relay board.

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