ECO mode AUDI A4 1999 B5 / 1.G APB Engine Evaporative Emission Syst

24-137

Testing activation of Evaporative Emission
(EVAP) Canister Purge Regulator Valve

The diode test lamp should blink.
If the diode test lamp does not blink or lights up continuously: - Connect VAG1527 between diode test lamp sockets 1 (B+) and 2 of
harness connector.
- Start output Diagnostic Test Mode (DTM) and select Evaporative
Emission (EVAP) Canister Purge Regulator Valves -N80 Page 01
-
75
. (To initiate DTM a second time, the engine must be started and
switched off)

- Connect VAG1598/31 test box to multi-pin harness connector for
engine control module. Do not connect to the engine control module
itself Page 24
-20
.
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