With Generic Scan Tool

Secondary Air Injection (AIR) Pump Relay -J299- And Activation, Checking

Recommended special tools and equipment







- VAG1526A multimeter
- V.A.G 1527 B Voltage Tester
- VAG1594A connector test kit
- VAG1598/31 test box

Test requirements:
- Battery voltage at least 12.7 V







- Fuse for secondary air pump -S130- (40 A) in E-Box, plenum chamber (position B) OK.







- Fuse S234 (in fuse holder, position 34) OK.
- Ignition switched off.

Test sequence







- Pull off rubber seal of plenum chamber cover in direction of arrow.
- Remove cover -1- toward front.







- Pry off both covers -3- using a screwdriver.
- Loosen hex-nuts -4- by several turns.
- Loosen wiper arm -2- from wiper axle by lightly tilting.
- Remove hex nuts completely and remove wiper arms.
- Disconnect securing clips -1- and remove cowl grill -5-.







- Remove cover for E-box, plenum chamber (arrows).







- Pry off Engine Control Module (ECM) retaining bracket (arrows) using a screwdriver and set control module aside.
- If installed, unclip Transmission Control Module (TCM) retaining bracket and set control module aside.
- Connect test box to wiring harness of Engine Control Module (ECM); ECM is not connected. Text Box, Connecting For Wiring Test
- Using wires e.g. from connector test kit V.A.G 1594 A, bridge terminals 1 and 46 on test box.
- Switch ignition on.







- Secondary Air Injection (AIR) Pump Relay -3- (in E-box, plenum chamber) must engage and Secondary Air Injection (AIR) Pump Motor -V101- must run

A - Secondary Air Injection (AIR) Pump Motor runs:
- Check voltage supply of the Secondary Air Injection (AIR) pump relay.
- Check activation of the Secondary Air Injection (AIR) pump relay.

B - Secondary Air Injection (AIR) Pump Motor does not run:
- Check voltage supply of the Secondary Air Injection (AIR) pump motor.

Checking voltage supply of Secondary Air Injection (AIR) pump relay







- Remove Secondary Air Injection (AIR) pump relay -3-.







- Connect multimeter for voltage measurement as follows.

Relay carrier in E-box, plenum chamber, position 3 Measure to
Terminal
8 Engine Ground (GND)

- Specified value: approx. battery voltage

If specified value is not obtained:
- Check wire connection from battery + (terminal 30) via Fuse for secondary air pump -S130- to Secondary Air Injection (AIR) Pump Relay -J299- (in relay and fuse carrier in E-Box, plenum chamber, position 3) for open circuit according to wiring diagram.
- Specified value: Wire resistance max 1.5 Ohm







- Connect multimeter for voltage measurement as follows.

Relay carrier in E-box, plenum chamber, position 3 Measure to
Terminal
4 Engine Ground (GND)

- Operate starter briefly.
- Specified value: approx. battery voltage
- Switch ignition off.

If specified value is not obtained:
- Check wire connection from Secondary Air Injection (AIR) Pump Relay -J299- (in 3-socket relay carrier in E-box, plenum chamber) via fuse S234 (in fuse holder, position 34) to Fuel Pump (FP) relay for open circuit according to wiring diagram.
- Specified value: Wire resistance max 1.5 Ohm

Check activation of the Secondary Air Injection (AIR) pump relay







- Remove Secondary Air Injection (AIR) pump relay -3-.
- Connect test box to wiring harness of Engine Control Module (ECM); ECM is not connected. Text Box, Connecting For Wiring Test







- Check the following wire connection for open circuit according to wiring diagram:

Relay carrier in E-box, plenum chamber, position 3 Test box
Terminal Socket
6 46

- Specified value: Wire resistance max 1.5 Ohm
- Also check the wire for short circuit to B+ and Ground (GND).
- Specified value: infinity Ohm (no continuity)

If no malfunctions are detected:
- Replace Secondary Air Injection (AIR) Pump Relay -J299-.

Check voltage supply of the Secondary Air Injection (AIR) pump motor







- Remove bolts or quick-release screws -1- and -2- and remove front noise insulation.







- Disconnect electrical harness connector -2- at Secondary Air Injection (AIR) Pump Motor -V101- -Item 1-.







- Connect VAG1527B voltage tester between terminals 1 and 2
- Connect test box to wiring harness of Engine Control Module (ECM); ECM is not connected. Text Box, Connecting For Wiring Test
- Bridge terminals 1 and 46 at test box using wires e.g. from V.A.G 1594 A adapter test kit.
- LED must light up.

If LED does not light up:
- Check wire connection from terminal 2 of harness connector to Secondary Air Injection (AIR) Pump Relay -J299- (in relay carrier in E-Box, plenum chamber, position 3) for open circuit according to wiring diagram.
- Check wire connection from terminal 1 of harness connector to Ground (GND) for open circuit according to wiring diagram.
- Specified value: Wire resistance max 1.5 Ohm

If no malfunctions are detected:
- Replace Secondary Air Injection (AIR) Pump Motor-V101-.

Final procedures
After repair work, the following work steps must be performed in the mentioned sequence:
1 - Check DTC memory, "Mode 3: Check DTC memory". Diagnostic Mode 3: Check DTC Memory
2 - If necessary, erase DTC memory, "Mode 4: Reset/erase diagnostic data". Diagnostic Mode 4: Check Reset/Erase Diagnostic Data
3 - Generate readiness code.Readiness Code, Generating

- End diagnosis and switch ignition off.