Turbocharger (TC) Intake Temperature Sensor, Checking

Turbocharger (TC) Intake Temperature Sensor, checking

Use only gold-plated terminals when servicing terminals in harness connector.

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.
- All electrical consumers such as, lights and rear window defroster must be switched off.
- For vehicles with automatic transmission, selector lever must be in -P-.
- Parking brake must be engaged.
- If vehicle is equipped with an A/C system, it must be switched off.
- Ground (GND) connections between engine and chassis must be OK.
- Ignition is switched off.

Checking voltage supply







- Disconnect 2-pin harness connector -3- from Turbocharger (TC) Intake Temperature Sensor -G507-.
- Switch ignition on.







- Measure voltage supply between connector terminals
Specified value: approx. 5.0 V
- Switch ignition off.

If specified value is obtained:
- Replace Turbocharger (TC) Intake Temperature Sensor -G507-.
- 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 not obtained:
- Check wires to Engine Control Module (ECM) according to wiring diagram.

Check wires to control module
- Connect test box (1598/42) to Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248- wiring harness using adapter cable (V.A.G 1598/39-2), connecting test box for wiring test. Test Box, Connecting For Wiring Test







- Check wires between test box and 2-pin connector for open circuit according to wiring diagram.

Terminal 1 + socket 23
Terminal 2 + socket 52

Wire resistance: max. 1.5 Ohms

- Check wires for short circuit to each other, to vehicle Ground (GND) and to B+.
Specified value: Infinite Ohms

If no malfunctions are found in wires:
- Replace Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248-.