ESP AUDI A4 2000 B5 / 1.G AWM Engine Secondary Air System Workshop Manual

26-55

Test requirements:

Vehicle diagnostic, testing and information
system VAS 5051 or VAG 1551 Scan Tool.

Test sequence

- Initiate output Diagnostic Test Mode (DTM) and
activate Secondary Air Injection Pump relay -
J299-.

A - If relay does not respond:
B - If relay responds but secondary air injection pump motor does not
run:
The secondary air injection pump relay-2- (in electronics box of
plenum chamber, left) must respond and secondary air injection pump
motor -V101- must run intermittently.
- Check voltage supply of secondary air pump relay Page 26
-56
.
- Check actuation of secondary air injection pump relay Page 26
-58
.
- Check voltage supply of secondary air injection pump motor Page
26
-60
.
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