Fault-finding table

FAULT-FINDING TABLE

NOTE: To make its interpretation easier, the fault-finding table for the air conditioner has been subdivided into three section which comprise the three functions described separately also in the wiring diagrams:

• Climate control and recirculation fan
• Compressor control
• Engine fan control

Climate control and recirculation fan

(B) Only for fusebox "B"

Compressor control

(C) Only for fusebox "C"

(*) Bear in mind that operation of the compressor is cut off by the system logic in the following conditions:

• coolant fluid pressure > 28 bar appr.;
• coolant fluid pressure < 2.5 bar appr. (circuit discharged);
• engine temperature > 111°C (only TD);
• full load (temporary cut out for appr. 8 sec. with engine speed over 2000 rpm) (only TD).

This operation is also determined by the logic of the injection-ignition control unit (only petrol) (see the corresponding section).