With Manufacturer's Scan Tool

Secondary Air Injection (AIR) pump relay -J299- and Secondary Air Injection (AIR) pump motor-V101-, checking
Special tools and equipment





^ VAG 1526 A
^ VAG 1527 B
^ VAG 1594 A
^ VAG 1598/31

Test requirement:
^ Vehicle Diagnostic, Testing and Information System VAS 5051 or VAG 1551 Scan Tool must be connected.





Test sequence
^ Remove rubber seal from plenum chamber cover in direction of arrow.
^ Pull plenum chamber cover -1- toward front and remove.





^ Unbolt cover of electronics box in plenum chamber.
^ Start Output Diagnostic Test Mode and actuate Secondary Air Injection (AIR) pump relay -J299-.





^ Secondary Air Injection (AIR) pump relay -2- (in 3-way relay carrier of electronics box at left side of plenum chamber, plug-in position 2) must pick up and Secondary Air Injection (AIR) pump motor -V101 must run intermittently.
A - If relay does not pick up:
^ Check power supply of Secondary Air Injection (AIR) pump relay.
^ Check actuation of Secondary Air Injection (AIR) pump relay.
B - If relay picks up, but Secondary Air Injection (AIR) pump motor does not run:
^ Check power supply for Secondary Air Injection (AIR) pump motor.

Checking power supply of Secondary Air Injection (AIR) pump relay
^ Switch off ignition.
^ Disconnect Secondary Air Injection (AIR) pump relay.








^ Connect multimeter and measure voltage as follows.
^ Specification: approximately battery voltage
If reading does not match specification:
^ Perform following checks marked with a dot:





^ Check fuse -S130 (40 A) in 3-way relay carrier of electronics box in plenum chamber, plug-in position 7.





^ Check for open circuit in wiring from battery+ (terminal 30) to fuse -S130 to Secondary Air Injection (AIR) pump relay-J299- (in 3way relay carrier of electronics box in plenum chamber, plug-in position 2).
Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations





^ Connect multimeter and measure voltage as follows.
^ Briefly operate starter.
^ Specification: approximately battery voltage
If reading does not match specification:





^ Perform following checks marked with a dot:
^ Check fuse -S234- (in fuse box, plug-in position 34).
Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations
^ Check for open circuit in wiring from Secondary Air Injection (AIR) pump relay -J299- (in 3-way relay carrier of electronics box in plenum chamber) to fuel pump relay via fuse -S234- (in fuse box, plug-in position 34)
Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations

Checking actuation of Secondary Air Injection (AIR) pump relay
^ Switch off ignition.
^ Disconnect Secondary Air Injection (AIR) pump relay.








^ Connect voltage tester VAG 1527 B as follows:
^ Start Output Diagnostic Test Mode and actuate Secondary Air Injection (AIR) pump relay-J299-.
^ LED must flash
If LED does not flash:
^ Switch off ignition.
^ Connect test box VAG 1598/31 to engine control module wiring harness. Engine control module must not be connected:








^ Check for open circuit and short to Ground/positive in the following wiring connection:
^ If necessary, eliminate open circuit/short circuit.
If no fault is found:
^ Replace Secondary Air Injection (AIR) pump relay -J299-.

Checking power supply for Secondary Air Injection (AIR) pump motor





^ Remove noise insulation -arrows-.





^ Unplug connector from Secondary Air Injection (AIR) pump motor - V101 -arrow-.
^ Installation location: front right in engine compartment below air cleaner housing





^ Connect voltage tester VAG 1527 B between contacts 1 and 2.
^ Start Output Diagnostic Test Mode and actuate Secondary Air Injection (AIR) pump relay-J299-.
^ LED must flash
If LED does not flash:
^ Perform following checks marked with a dot:
^ Check for open circuit in wiring from contact 1 of connector to Secondary Air Injection (AIR) pump relay -J299- (in 3-way relay carrier in electronics box of plenum chamber, plug-in position 2).
Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations
^ Check for open circuit in wiring from contact 2 of connector to Ground:
Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations
If no fault is found:
^ Replace Secondary Air Injection (AIR) pump motor -V101-.