Touareg V8-4.2L (BHX) (2004)
Air Injection Pump: Testing and Inspection
Diagnostic Procedures
Secondary Air Injection Pump Motor, Checking
Special tools, testers and auxiliary items required
‹› Multimeter (VAG1526) or multimeter (VAG1715)
‹› Connector test kit (VAG1594)
‹› Wiring diagram
Test requirements
‹› Fuses in E-box (in plenum chamber, left) must be OK:
‹› Motronic Engine Control Module (ECM) Power Supply Relay (J271) must be OK, check:
‹› Secondary Air Injection (AIR) Pump Relay (J299)) must be OK, check:
‹› Battery voltage must be at least 11.5 volts.
‹› All electrical consumers such as, for example, lights and rear window defroster must be switched off.
‹› Ground (GND) connections between engine and chassis must be OK.
‹› Ignition switched off.
Test sequence
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Disconnect 2-pin connector (arrow) from Secondary Air Injection (AIR) Pump Motor (V101).