Test
Secondary Air Injection (AIR) Pump Relay -J299- And Activation, Checking
Special tools and equipment
- V.A.G 1526A
- V.A.G 1527B
- V.A.G 1594A
- V.A.G 1598/31
- Initiate output Diagnostic Test Mode (DTM) and activate Secondary Air Injection (AIR) pump relay -J299-
- Secondary Air Injection (AIR) pump relay (under cover, left at bulkhead) must trigger and the Secondary Air Injection (AIR) pump motor -V101- must run.
A - If relay does not trigger:
- Check voltage supply of the Secondary Air Injection (AIR) pump relay.
- Check activation of the Secondary Air Injection (AIR) pump relay.
B - If relay triggers, but Secondary Air Injection (AIR) pump does not run:
- Check voltage supply of the Secondary Air Injection (AIR) pump motor. Testing and Inspection
Checking voltage supply of Secondary Air Injection (AIR) pump relay
- Switch ignition off.
- Remove Secondary Air Injection (AIR) pump relay
- Connect multimeter for voltage measurement as follows:
Relay carrier below cover, Measure to
left at bulkhead Measure
to terminal
1 Engine Ground (GND)
- Specified value: approx. battery voltage
If specified value is not obtained:
- Perform the following tests marked with dots:
- Check fuse -S131- (50 A) in main fuse box/battery.
- Check wire connection from B- (terminal 30) to fuse -S131-for Secondary Air Injection (AIR) pump relay-J299- (below cover, left at bulkhead) for open circuit.
- Connect multimeter for voltage measurement as follows:
Relay carrier below cover, Measure to
left at bulkhead terminal
3 Engine Ground (GND)
- Operate starter briefly (engine can also start).
- Specified value: approx. battery voltage
If specified value is not obtained:
- Perform the following tests marked with dots:
- Check fuse -S243- (in fuse holder, position 43).
- Check wire connection from B- (terminal 30) to fuse -S131-for Secondary Air Injection (AIR) pump relay-J299- (below cover, left at bulkhead) for open circuit.
Check activation of the Secondary Air Injection (AIR) pump relay
- Switch ignition off.
- Remove Secondary Air Injection (AIR) pump relay
- Connect multimeter for voltage measurement as follows:
Relay carrier below cover, V.A.G 1598/31 testing box
left at bulkhead terminal Bushing
4 B+
- Initiate output Diagnostic Test Mode (DTM) and activate Secondary Air Injection (AIR) pump relay -J299-
- Specified value: approx. battery voltage
If specified value is not obtained:
- Switch ignition off.
- Connect V.A.G 1598/31 test box at wiring harness to ECM, do not connect ECM.
- Check the following wire connection for open circuit and short circuit to Ground (GND) and B-:
Relay carrier below cover, V.A.G 1598/31 testing box
left at bulkhead terminal Bushing
4 66
- Repair open circuit or short circuit if necessary.
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 connector for Secondary Air Injection (AIR) pump motor -V101-.
- Connect V.A.G 1527B voltage tester between terminals 1 and 2
- Initiate output Diagnostic Test Mode (DTM) and activate Secondary Air Injection (AIR) pump relay -J299-
- LED must light up.
If LED does not light up:
- Perform the following tests marked with dots:
- Check wire connection from connector at Secondary Air Injection (AIR) pump motor-V101-to Secondary Air Injection (AIR) pump relay -J299- (in relay carrier below cover, left at bulkhead) for open circuit
- Check wire connection from connector at Secondary Air Injection (AIR) pump motor-V101- to Ground (GND) point in engine compartment, left, for open circuit:
If no malfunctions are detected:
- Replace Secondary Air Injection (AIR) pump motor-V101-.