Secondary Air Injection Pump Motor, Checking

SECONDARY AIR INJECTION PUMP MOTOR, CHECKING

Special tools, testers and auxiliary items
- VAG 1598/18 test box
- VW 1594 connector test kit
- VAG 1527B voltage tester

Test conditions





- Fuse -3- on secondary air injection pump relay J299 -4- OK

Test sequence





- Connect VAG 1598/18 test box to ECM wiring harness.





- Disconnect pressure hose from check valve -1-.
- Connect test box sockets 1 and 50 using adapter cables from VW 1594 connector test kit.

- Secondary air injection pump motor must run and air must exit the connecting hose.

If the motor runs, but no air exits the hose:
- Check hoses and lines.
- If necessary, replace secondary air injection pump motor

If the motor does not run:
- Disconnect 2-pin connector from secondary air injection pump motor V101.
- Connect VAG 1527B voltage tester to 2-pin connector using adapter cables from VAG 1594 test kit.

- LED must light up

If YES (voltage supply OK):
- Replace secondary air injection pump motor.

If LED does not light up:
- Reconnect 2-pin connector.
- Check activation of secondary air injection pump motor.
- Check Diagnostic Trouble Code (DTC) memory for stored malfunctions.