Damaged wire insulation of the temperature sensor which measures the ambient temperature of the Light Processor compartment. When disconnecting the wire of the temperature sensor from the Signal Backplane (reference 6 image) the error code is changed to “engine air - temperature sensor open”.

1. Repair the insulation of the of the temperature sensor which measures the ambient temperature of the Light Processor compartment (reference 16 image).

2. If not repairable, replace the temperature sensor and wiring.

Defect temperature sensor (reference 16 image) which measures the ambient temperature of the Light Processor compartment. When disconnecting the wire unit of the temperature sensor from the Signal Backplane (reference 6 image the error code is changed to “engine air - temperature sensor open”.

Replace the temperature sensor (reference 16 image) which measures the ambient temperature of the Light Processor compartment.