A/C System Electrical Components, Checking

A/C System Electrical Components, Checking

Special tools, testers and auxiliary items required

• Test Box (basic unit) (V.A.G 1598/14) with adapter (V.A.G 1598/11) and adapter (V.A.G 1598/12)

• Vehicle diagnosis, testing and information system (VAS 5051/) with multimeter leads (VAS 5051/7), DSO measuring leads 1 and 2 (VAS 5051/8) and inductive pickup (50 A) (VAS 5051/9)

• Voltage tester (V.A.G 1527B)

• Connector test set (V.A.G 1594C)

• Temperature measuring device, for example, a commercially available thermometer

• Wiring diagram for vehicle system to be tested

The function electrical testing is not described in this appropriate repair information. Perform the electronic test using the "Guided Fault Finding" function. This also contains information on the functions that should be tested using Vehicle diagnosis, testing and information system VAS 5051/ in the "Guided Fault Finding" function.

• There are different versions of the Climatronic Control Module (J255). Always note the exact allocation when replacing a component.

• A/C system OBD is performed with the "Guided Fault Finding" function in the vehicle diagnosis, testing and information system VAS 5051/.

• The Climatronic control module, can currently be exchanged as usual, component protection is not active at this time. Check using Vehicle diagnosis, testing and information system VAS 5051/ in the "Guided Fault Finding" function.

• If the Climatronic control module will be replaced, check the coding and adaptation for the Climatronic control module before removing it using the "Replace control module" function of the Vehicle diagnosis, testing and information system VAS 5051/ in the "Guided Fault Finding" function.

• The temperature-dependent resistance values for the various temperature sensors are in the table. They can be accessed using the "Guided Fault Finding" function of the Vehicle diagnosis, testing and information system VAS 5051.