Secondary Air Injection (Air) Pump Relay, Checking Activation
Secondary Air Injection (AIR) pump relay -J299-, checking activation
Special tools and equipment
^ VAG1526A Multimeter
^ VAG1527B Voltage tester
^ VAG1594A Adapter set
^ VAG1598/31 Test box
^ Initiate output Diagnostic Test Mode (DTM) and activate Secondary Air Injection (AIR) pump relay -J299-.
- The Secondary Air Injection (AIR) pump relay (in 3-socket relay carrier in the E-box, at left in plenum chamber, position 2) must trigger and the Secondary Air Injection (AIR) pump motor 4101- must run in intervals
A - If relay does not trigger:
^ Check voltage supply of Secondary Air
^ Injection (AIR) relay.
^ Checking activation of Secondary Air Injection (AIR) relay.
B - If relay triggers, but Secondary Air Injection (AIR) pump does not run:
^ Check voltage supply for Secondary Air Injection (AIR) pump.
Checking voltage supply of Secondary Air Injection (AIR) pump relay
^ Remove Secondary Air Injection (AIR) pump relay.
^ Connect multimeter for voltage measurement as follows.
- Specified value: approximately battery voltage
If specified value is not obtained:
^ Perform the following tests marked with dots:
^ Check fuse S130 (40 A) in 3-socket relay carrier in E-Box, plenum chamber, position 7.
^ Check wire connection from Battery (B+) (terminal 30) to Secondary Air Injection (AIR) pump relay -J299- (in 3-socket relay carrier in E-Box, plenum chamber, position 2) for open circuit.
Refer to Electrical Wiring Diagrams, Troubleshooting Component Locations
^ Connect multimeter for voltage measurement as follows.
^ Operate starter briefly.
- Specified value: approximately battery voltage
If specified value is not obtained:
^ Perform the following tests marked with dots:
^ Check fuse S234 (in fuse holder, position 34).
^ 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:
Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations
Checking activation of the Secondary Air Injection (AIR) pump relay
^ Switch ignition off.
^ Remove Secondary Air Injection (AIR) pump relay.
^ Connect VAG1527B voltage tester as follows:
^ Initiate output Diagnostic Test Mode (DTM) and activate Secondary Air Injection (AIR) pump relay -J299-.
- LED must blink.
If LED does not blink:
^ Switch ignition off.
^ Connect VAG1598/31 test box at wiring harness to ECK do not connect ECM.
^ Check the following wire connection for open circuit and short circuit to Ground (GND) and B+:
^ Repair open circuit or short circuit if necessary.
If no malfunctions are detected:
^ Replace Secondary Air Injection (AIR) pump relay -J299-.
Checking voltage supply of the Secondary Air Injection (AIR) pump motor
^ Remove harness connector for Secondary Air Injection (AIR) pump motor -V101-.
^ Connect VAG1527B 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.
If LED does not light:
^ Perform the following tests marked with dots:
- Check wire connection from harness connector at Secondary Air Injection (AIR) pump motor -V101- to Secondary Air Injection (AIR) pump relay -J299- (in 3- socket relay carrier in E-Box, plenum chamber, position 2) for open circuit.
Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations
^ Check wire connection from harness connector at Secondary Air Injection (AIR) pump motor -V101- to Ground (GND) connection 1 in engine compartment wiring harness for open circuit:
Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations
If no malfunctions are detected:
^ Replace Secondary Air Injection (AIR) pump motor -V101-.