Work sequence

WARNING: This page is about a different variant/trim than selected.

NOTE:

Remove windshield wiper arms and cowl: Refer to 92 WINDSHIELD WIPER & WASHER SYSTEM

Fig 1: Identifying Test Box V.A.G 1598/31 Connect To Control Module Wiring Harness

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Connect Adapter cable, 121 pin VAG 1598/31 to control module wiring.
Switch ignition on.
Bypass jacks 3 + 46 on test box using auxiliary cables from Auxiliary measuring tool set VAG 1594 A.

Air pump motor should run and air should be coming out exhaust nozzles.

If the motor is running, but no air is coming out:

If the motor does not start:

Fig 2: Locating 2-Pin Connector From Motor

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Disconnect 2-pin connector from motor - arrow -.
Connect Voltage tester VAG 1527 B to disconnected attachment plug using auxiliary cables from Auxiliary measuring tool set VAG 1594 A.

Fig 3: Checking 2-Pin Connector Voltage

Courtesy of VOLKSWAGEN UNITED STATES, INC.

LED should illuminate.

If the LED illuminates (power supply OK):

If the LED does not illuminate:

Clip on 2-terminal attachment plug.
Start output diagnostic test mode and trigger Secondary Air Injection (AIR) Pump Relay J299 : Refer to 01 ON BOARD DIAGNOSTIC (OBD)
Check DTC memory: Refer to 01 ON BOARD DIAGNOSTIC (OBD)
Read readiness code: Refer to 01 ON BOARD DIAGNOSTIC (OBD)

If DTC memory was erased or engine control module was separated from positive voltage supply, readiness code must be regenerated: Refer to 01 ON BOARD DIAGNOSTIC (OBD)