With Generic Scan Tool

Secondary Air Injection (AIR) Valve, Checking

Solenoid valve is closed when no voltage is present.

Recommended special tools and equipment
- VAG1526 multimeter or VAG1715 multimeter
- VAG1594 connector test kit
- Wiring diagram

Requirements







- The respective fuses of Secondary Air Injection (AIR) Solenoid Valve -N112- must be OK.
- Ignition switched off.

Test sequence







- Disconnect 2-pin connector from Secondary Air Injection (AIR) Solenoid Valve -N112- (arrow).







- Measure resistance between terminals of solenoid valve.
Specified value: 25.0 to 35.0 Ohms

If specified value is not obtained:
- Replace Secondary Air Injection (AIR) Solenoid Valve -N112-.
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

If specified value is obtained:
- Connect test box to control module wiring harness. Test Box, Connecting For Wiring Test







- Check wire between test box socket 9+2-pin connector terminal 2 for open circuit according to wiring diagram.
Wire resistance: max: 1.5 Ohms

- Check the wire for short circuit to B+ and Ground (GND).
Specified value: Infinite Ohms

- Check wire between 2-pin connector terminal 1 and the Fuel Pump (FP) Relay -J17- for open circuit according to wiring diagram.
Wire resistance: max: 1.5 Ohms

If no malfunctions are found in wires:
- Replace Motronic Engine Control Module (ECM) -J220-.