Audi Workshop Service and Repair Manuals

Notes:

• ◆ Fitting locations of components actuated
• ◆ If final control diagnosis is to be repeated, terminate and re-start self-diagnosis.
• ◆ Each component is actuated for a specific time. This can be prematurely terminated using the ⇒key. At the same time this causes the next component to be selected.
• ◆ After the allowed time limit has expired, the next component must be selected using the ⇒key.

Starting final control diagnosis

• ‒ Connect the vehicle diagnostic, testing and information system VAS 5051 to the vehicle's 16-pin diagnostic socket using the diagnostic cable VAS 5051/1, with ignition switched off and select the control unit of the additional heater -J162 using "address word" 18.

→ Display on VAS 5051:

• ‒ Switch off the ignition and all electrical consumers.
• ‒ With the "Address word" 18 select the additional heater => Page 01-14
• ‒ Interrogate fault memory => Page 01-24.

→ Display on VAS 5051:

Notes:

To measure the current consumption of -Q8 glow plug with flame detector

• ‒ Connect clip-on ammeter (e.g. of multimeter V.A.G 1715) via positive connection of battery -A.
• ‒ Set the measuring instrument to current measurement with clip-on ammeter (measuring range 0-10 A).

• ‒ Select function "03 - Final control diagnosis".

→ Display on VAS 5051:

• ◆ Display zone -1- displays which control element is currently being actuated (e.g. 1st control element in the test).
• ◆ The control elements which are currently actuated or have been actuated are listed in display zone -2-. The control element which is currently actuated is in the bottom line.

• ‒ Press the ⇒key to switch to the next component. Function and sequence =>Table of final controls actuated, Page 01-44

Notes:

• ◆ By pressing the ←key you will return to the selection program.
• ◆ Final control diagnosis can be terminated by pressing the C key.
• ◆ Interrogating fault memory on completion of final control diagnosis => Page 01-24
• ◆ On termination of the final control diagnosis, interrogate the fault memory => Page 01-67

Final controls actuated

Notes:

• ◆ Any fault at the glow plug with flame detector -Q8 is stored in the fault memory.
• ◆ The current consumed by the glow plug is restricted by the control unit such that the power at the glow plug is approx. 96 W (current level varies with battery voltage).

Notes:

• ◆ The metering pump is installed on the floor panel in the right rear wheel area.
• ◆ On vehicles with diesel engines, allowance is made in the on-board computer consumption display for the fuel consumption to the additional heater. This function is implemented by the engine control unit, however, only when the engine is running (metering pump -V54 and engine control unit are connected by a wire).
• ◆ During actuation of the -V54 metering pump, approx. 4 cm3 of fuel are pumped into the additional heater. If the final control diagnosis is performed several times in sequence, then smoke may develop upon initial operation.

Notes:

• ◆ On vehicles without -V55 recirculating pump the control element "-V55 recirculating pump" is displayed, check the coding of the additional heater=> Page 01-61
• ◆ On vehicles with additional heater without recirculating pump -V55 actuation of -V6 combustion air blower terminates final control diagnosis.
• ◆ The Audi A2 currently has no -V55 recirculating pump for the additional heater installed.

Notes:

• ◆ If on vehicles without -V55 recirculating pump, the control element "-V55 recirculating pump" is displayed, check the coding of the additional heater=> Page 01-61
• ◆ On vehicles with additional heater with -V55 recirculating pump actuation of the -V55 recirculating pump terminates final control diagnosis.
• ◆ The Audi A2 currently has no -V55 recirculating pump for the additional heater installed.

Notes:

• ◆ If on the Audi A2 the control element "Fresh air blower actuation signal" is displayed, check the coding of the additional heater=> Page 01-61
• ◆ For the additional heater the signal for actuating the fresh-air blower is not output (additional heater only operates when engine is running).
• ◆ The signal for fresh air blower actuation is intended for the version with auxiliary heater. At present, it installation of an auxiliary heater in the Audi A2 is not envisaged.