audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Heated Oxygen Sensor and Sensor Regulation before Catalytic Converter, Checking|Page 7611 > < Heated Oxygen Sensor and Sensor Regulation before Catalytic Converter, Checking|Page 7609
Page 5
background image

‹› Coolant Temperature at least 80° C.

Function test

-

Perform the function test located in diagnostic mode 06. Refer to => [ OBDMID 05 ($05): Oxygen Sensor

Monitor Bank 2 - Sensor 1 ] See: Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Modes 01 - 09/Diagnostic Mode 06 - Read Test
Results For Specific Diagnostic Functions.

If specified values are obtained:

-

End diagnosis and switch the ignition off.

If the specified values are not obtained:

Test procedure

-

Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Testing and Inspection/Scan Tool Testing
and Procedures/Preliminary Check.

Start diagnosis

-

Remove the rear engine cover - arrows -.

-

Remove coolant reservoir - arrow - and disconnect electrical connector on Engine Coolant Level (ECL) Warning Switch (F66) at bottom of
coolant reservoir.

-

Remove the screw - arrow - retaining the coolant reservoir.

-

Remove the coolant reservoir and disconnect the Engine Coolant Level (ECL) Warning Switch (F66) electrical harness connector. 

-

 Position the coolant reservoir aside with the coolant hoses -  1 through 3 - attached.

Heated Oxygen Sensor and Sensor Regulation before Catalytic Converter, Checking|Page 7611 > < Heated Oxygen Sensor and Sensor Regulation before Catalytic Converter, Checking|Page 7609