If LED lights up:
Check actuation.
Checking actuation
Fig. 232: Identifying 2-Pin Electrical Connector & Terminals
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Connect voltage tester VAG 1527B to contact 1 (positive) and 2 of connector.
Start output Diagnostic Test Mode and actuate camshaft adjustment valve.
Indicated on display
LED must flash
If LED does not flash or if it is permanently lit:
Connect test box VAG 1598/31 to engine control module wiring harness. Engine control module must not
e connected. --> 24 - MULTIPORT FUEL INJECTION (MFI)
Output Diagnostic Test Mode -->
Camshaft timing control
2005 Audi A4 Quattro
ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
1:01:08 AM Page 157
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