Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLKSWAGEN2002GOLF GLS, 2.0 K, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 91 (2.8L & 3.2L - GENERIC SCAN TOOL, ENGINE CODE(S): AFP, BDF, BJS [A4 PLATFORM] (28 IGNITION/GLOW PLUG SYSTEM - ST GENERIC SCAN TOOL))ST GENERIC SCAN TOOLDIAGNOSTIC MODE, SELECTINGDIAGNOSTIC MODE 6: CHECK TEST RESULTS OF COMPONENTS THAT ARE NOT CONTINUOUSLY MONITOREDTEST-ID 03: SECONDARY AIR INJECTION (AIR) SYSTEM
2002 Volkswagen Golf GLS, 2.0 K, Standard
Test-ID 03: Secondary Air Injection (AIR) system
2002 Volkswagen Golf GLS, 2.0 K, StandardSECTION Test-ID 03: Secondary Air Injection (AIR) system
WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2005 Volkswagen GTI, 2004 Volkswagen R32, 2004 Volkswagen Jetta, 2004 Volkswagen GTI, and 2003 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
Test requirements
- There must not be any DTCs stored in DTC memory. Refer to Diagnostic mode 3: Check DTC Memory
- Intake air temperature 5 to 35 ° C. Refer to Diagnostic mode 1: Check measured values
- Coolant temperature approx. intake air temperature (5 to 35 ° C). Refer to Diagnostic mode 1: Check measured values
Work procedure
- Read readiness code. Refer to Readiness code, reading
- Let engine run at idle.
- Under address word 33, select "Diagnostic mode 6: Check test results of components that are not continuously monitored".
- Select the "Test-ID 03: Secondary Air Injection (AIR) system"
- Check specified values at idle.
Evaluation test-ID 03: Secondary Air Injection (AIR) system
| Secondary Air Injection (AIR) system | Specified value: | ||||||
| (Bank 1 and 2) | min. | max. | |||||
| reduced secondary air mass | |||||||
|
0.500 | --- | |||||
|
0.250 | --- | |||||
|
0.250 | --- | |||||
| reduced secondary air mass, short test | |||||||
|
0.600 | --- | |||||
| very low secondary air mass, short test | |||||||
|
0.250 | --- | |||||
|
0.602 | --- | |||||
|
0.250 | --- | |||||
| Secondary Air Injection (AIR) system | Specified value: | ||||||
| (Bank 1 and 2) | min. | max. | |||||
| Leak (combination valve does not close), short test | |||||||
|
--- | 14.0 kg/h | |||||
|
--- | 7.2 kg/h | |||||
|
--- | 7.2 kg/h | |||||
- End diagnosis and switch ignition off.
If specified values are not obtained:
- Check secondary air system for proper seal. Refer to Secondary Air Injection (AIR) system, checking for proper seal .
- Check Secondary Air Injection (AIR) Solenoid Valve -N112-. Refer to Secondary Air Injection (AIR) valve, checking .
- Check Secondary Air Injection (AIR) Pump Motor -V101-. Refer to Secondary Air Injection (AIR) pump motor, checking .
- Check combination valve. Refer to Combination valve, checking .
- Erase DTC memory of Engine Control Module (ECM). Refer to Diagnostic mode 4: Reset/erase diagnostic data
- Generate readiness code. Refer to Readiness code, generating
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.