audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 5942 > < With Manufacturer's Scan Tool|Page 5940
Page 4
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Disconnect power supply relay -2-.

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Check for open circuit in following wiring according to wiring diagram:

Relay carrier in electronics box,

Connection of ignition

plenum chamber, position 2

coils

terminal

terminal

8

1

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Repair open circuit, if necessary.

If no wiring malfunction is detected:

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Check voltage supply of Motronic Engine Control Module (ECM) power supply relay -J271-.

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Check actuation of Motronic Engine Control Module (ECM) power supply relay -J271-.

Checking power supply

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Connect multimeter as follows to measure voltage.

Relay carrier in electronics box,

Measure to

plenum chamber, position 2
terminal

With Manufacturer's Scan Tool|Page 5942 > < With Manufacturer's Scan Tool|Page 5940