Intake Manifold Tuning Valve Position Sensor, Checking
Special tools and workshop equipment required
- Multimeter.
- Wiring diagram.
Test Requirements
- Fuses for engine electronics OK.
- Parking brake engaged.
- Battery voltage at least 12.5 V.
- Vehicles with automatic transmission, shift selector lever into position "P" or "N".
- All electrical consumers such as, lights and rear window defroster, switched off (radiator fan must not run during test).
- A/C switched off.
- The fuel tank at least 1/4 full.
- Ignition switched off.
Test Procedure
-- Perform a preliminary check to verify the customer's complaint. Refer to PRELIMINARY CHECK .
Checking voltage supply
-- Disconnect the electrical harness connector from the Intake Manifold Tuning (IMT) Valve Position Sensor -G513- -3-.
-- Using aMultimeter --, check the electrical harness connector for voltage.
| Intake Manifold Tuning (IMT) Valve Position Sensor -G513- Harness Connector Terminal | Specified value |
|---|---|
| 1 to Ground (GND) | Battery positive (+) |
| 2 to Ground (GND) | about 5 V |
| 3 to Battery positive (+) | Battery positive (+) |
If specified value is obtained:
-- Replace the Intake Manifold Tuning (IMT) Valve Position Sensor -G513-. Refer to Component Locations Overview .
If specified value is not obtained:
Checking wiring connections
If the manufacturers test box is being used, perform the following step.
-- Connect the Test Box 105 Pin VAG1598/42 with Adapter Cable1598/39-1. Refer to Component Locations Overview .
If the manufacturers test box is not being used, perform the following step.
-- Remove the Engine Control Module (ECM) -J623-. Refer to ENGINE CONTROL MODULE, REPLACING .
-- Using a Multimeter, check the following electrical wiring harness terminals for an open circuit.
| Intake Manifold Tuning (IMT) Valve Position Sensor -G513- Harness Connector Terminal | Engine Control Module (ECM)J623 Electrical Harness Connector Terminal |
|---|---|
| 1 | 63 |
| 2 | 52 |
| 3 | 9 |
Specified value: 1.5 Ω max.
If the specification is not obtained:
-- Check the wiring for a short circuit to Battery positive (+) or an open circuit.
-- If necessary, repair the wiring connection.
If no malfunctions are found in wires:
-- Replace the Engine Control Module (ECM) -J623-. Refer to ENGINE CONTROL MODULE, REPLACING
-- Assembly is performed in the reverse of the removal.
After repair work, the following work steps must be performed in the following sequence:
- Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .
- If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
- If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .