Secondary Air Injection (AIR) Pump Relay -J299- , checking

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

Special tools, testers and auxiliary items required

Multimeter.
Wiring diagram.

Test requirements

The Secondary Air Injection (AIR) Pump Relay -J299- fuses OK.
The Fuel Pump (FP) Relay J17 fuse OK.
Battery voltage at least 12.5 V.
All electrical consumers switched off (radiator fan must NOT run during test).

A/C switched off.
The ignition switched off.

Test procedure

Perform a preliminary check to verify the customers complaint. Refer to → Motronic Engine Control Module (ECM) J220 , replacing

Start diagnosis

Fig 1: Secondary Air Injection Pump Relay J299

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove the Secondary Air Injection (AIR) Pump Relay -J299- - 1 -.

Checking voltage

Using a Multimeter , check the Secondary Air Injection (AIR) Pump Relay -J299- socket 3 to Ground (GND).

Specified value: battery voltage.

If the specified value was not obtained:

Check the wiring connections from the Battery to the Secondary Air Injection (AIR) Pump Relay -J299- socket 3 for an open circuit or a short circuit.
Check the wiring connections for damage, corrosion, lose or broken terminals.
If necessary, repair the faulty wiring connection.

If the specified value was obtained:

Switch the ignition on.
Using a Multimeter , check the Fuel Pump (FP) Relay J17 socket 23/87 to the Secondary Air Injection (AIR) Pump Relay -J299- socket 1/25 for voltage.

Specified value: battery voltage.

Switch the ignition off.

If the specified value was not obtained:

Check the wiring connections from the Fuel Pump (FP) Relay J17 socket 2/87 to the Secondary Air Injection (AIR) Pump Relay -J299- socket 3 for an open circuit or a short circuit.
Check the wiring connections for damage, corrosion, lose or broken terminals.
If necessary, repair the faulty wiring connection.

If the specified value was obtained:

Checking activation

Install the Secondary Air Injection (AIR) Pump Relay -J299-.
Switch the ignition on.
Using a Multimeter , check the Secondary Air Injection (AIR) Pump Relay -J299- socket 2 to Ground (GND)
Switch the ignition off.

Specified value: battery voltage.

If the specified value was not obtained:

Check or replace the Secondary Air Injection (AIR) Pump Relay -J299-.
Check the wiring connections for damage, corrosion, lose or broken terminals.
If necessary, repair the faulty wiring connection.

If the specified value was obtained:

Checking wiring

If the manufacturers test box is being used. Perform the following step.

Install the test box Test Box 105 Pin VAG1598/31. Refer to 24 MULTIPORT FUEL INJECTION (MFI) for Engine Code AWD and 24 MULTIPORT FUEL INJECTION (MFI) for Engine Codes AWP and AWW .

If the manufacturers test box is not being used. Perform the following step.

Remove the Motronic Engine Control Module (ECM) J220. Refer to → Motronic Engine Control Module (ECM) J220 , replacing .
Using a Multimeter , check the Secondary Air Injection (AIR) Pump Relay -J299- socket 4 to the Motronic Engine Control Module (ECM) J220 electrical harness connector T121 terminal 66 for resistance.

Secondary Air Injection (AIR) Pump Relay -J299- socket terminal	Motronic Engine Control Module (ECM) J220 electrical harness connector T121 terminal or test box socket
4	66

Specified value: 1.5 Ω Max.

If the specification was not obtained:

Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
Check the electrical harness connector for damage, corrosion, lose or broken terminals.
If necessary, repair the faulty wiring connection.

If no malfunction is found in the wiring and voltage supply was OK:

Replace the Secondary Air Injection (AIR) Pump Relay -J299-. Refer to 26 - EXHAUST SYSTEM, EMISSION CONTROLS .

If no malfunction is found in the wiring and voltage supply was not OK:

Erase the DTC memory. Refer to → Diagnostic Mode 04: Reset/delete diagnostic data
Perform a road test to verify repair.

If the DTC does not return:

Repair complete, Generate readiness code. Refer to →Readiness Code .

End diagnosis.

If the DTC does return and no malfunction is detected in the wiring and the voltage supply was OK:

Replace the MFI Engine Control Module (ECM) J220. Refer to → Motronic Engine Control Module (ECM) J220 , replacing .
Assembly is performed in the reverse of the removal.

Final procedures

After repair work, the following work steps must be performed in the following sequence:

Check the DTC memory.
If necessary, erase the DTC memory.
If the DTC memory was erased, generate readiness code.

End diagnosis