Exhaust Gas Recirculation (EGR) Cooler Switch-Over Valve, Checking

Exhaust Gas Recirculation (EGR) Cooler Switch-over Valve, Checking

Only vehicles with engine code BEW

Recommended special tools and equipment
- V.A.G 1526 multimeter or V.A.G 1715 multimeter
- V.A.G 1594 connector test kit
- Wiring diagram

Requirements







- The respective fuses of Diesel-Direct fuel injection system must be OK.
- Battery voltage must be at least 11.5 volts.

Test sequence
- Disconnect 2-pin connector from Exhaust Gas Recirculation (EGR) Cooler Switch-over Valve -N345-.
- Measure resistance between sensor terminals 1 + 2:

Specified value: 14 to 40 Ohms

If specified value is not obtained:
- Replace Exhaust Gas Recirculation (EGR) Cooler Switch-over Valve -N345-.
- Erase DTC memory of control module for Diesel-Direct fuel injection system. 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. connect test box for wiring test.
- Connect adapter cable (V.A.G 1598/39-2) to test box (V.A.G 1598/42).







- Check wires between test box and connector for open circuit according to wiring diagram.

Terminal 1 + chassis Ground (GND)
Terminal 2 + socket 15

Wire resistance: max. 1.5 Ohms

- Check wires for short circuit to B+ and to Ground (GND).

Specified value: Infinite Ohms

If no malfunctions are found in wires:
- Replace Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248-.
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes