Checking activation
- Connect voltage tester V.A.G 1527 B to contact 1 (positive) and contact 2 of connector.
- Vehicle diagnostic, testing and information system VAS 5051 is connected; vehicle system "01 - Engine electronics" is selected. Ignition must be switched on.
Display on VAS 5051:
- Select diagnosis function "03 - Final control diagnosis" from menu -1-
- Press the > button repeatedly until following display appears:
Display on VAS 5051:
A - Actuator test is waiting - Continued switching required
2 - Secondary Air Injection (AIR) Solenoid Valve -N112-
- Press the > button.
Display on VAS 5051:
A - Actuator is running - Continued switching allowed
- LED should flash.
- Press the < button to exit from function "03 - Final control diagnosis".
If LED lamp does not flash or if it lights up continuously:
- Connect test box V.A.G 1598/31 to connectors on wiring harness (engine control unit remains disconnected). Also connect ground clamp of test box to battery negative terminal (not shown in illustration).
See WIRING AND COMPONENT CHECK USING TEST BOX V.A.G. 1598/31 .
WARNING:
To prevent damage to electronic components, switch to respective measuring range before connecting measuring cable and observe test prerequisites.
- Test for open circuit and short to positive or ground in following wiring connections:
SECONDARY AIR INJECTION SOLENOID VALVE CIRCUIT TEST - OPENS/SHORTS
| Connector Contact | Test box V.A.G 1598/31 Socket |
|---|---|
| 2 | 44 |
- Eliminate open circuit or short circuit using wiring diagram.