Checking activation

Switch off ignition.

Fig 1: Secondary Air Injection Pump Relay J299

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Unplug current supply relay -1- (located under cover on left side of bulkhead).

NOTE: To remove protective cover on vehicles with suspension turret stiffener strut, disengage and move down relay carrier on bulkhead. If necessary, also unplug connector on air mass meter.

Fig 2: Identifying Connector & 6 Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Connect multimeter (voltage measurement range) as follows:

Relay carrier below cover on left side of bulkhead Contact	Measure against
5	Battery positive

Switch on ignition.

Specification: approx. battery voltage

If the specification is not attained:

Switch off ignition.
Connect test box VAG 1598/31 to wiring harness for engine control module. Do not connect to the engine control module itself. Refer to Wiring and component check using test box VAG 1598/31 .

Fig 3: Identifying Connector & 6 Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Test for open circuit and short to positive or Ground in the following wiring connections:

Relay carrier below cover on left side of bulkhead Contact	Test box VAG 1598/31 Socket
5	21

Correct any open/short circuit as necessary.

If no malfunction is found:

Install a new motronic engine control module (ECM) power supply relay -J271-.