Intake Manifold Runner Position Sensor 2, Checking

Special tools and workshop equipment required 

• Multimeter.
• Wiring diagram.

Test requirements 

• The Engine Control Module (ECM) 2 -J624- fuses OK.
• The parking brake engaged.
• The battery voltage at least 12.5 V.
• The selector lever of automatic transmission in position "P" or "N".
• All electrical consumers switched off (radiator fan must NOT run during test).
• A/C switched off.
• The fuel tank at least ¹ /₄ filled.
• The ignition switched off.

Procedure 

-- Remove the rear engine cover -arrows-.

Checking voltage supply

-- Disconnect the Intake Manifold Runner Position Sensor 2 -G512- electrical harness connector -5-.

Switch the ignition on.

-- Using a Multimeter --, check the Intake Manifold Runner Position Sensor 2 -G512- electrical harness connector for voltage.

Intake Manifold Runner Position Sensor 2 -G512- electrical harness connector terminals	Specified value
1 to Battery positive (+)	Battery voltage (+)
2 to Ground (GND)	about 5 V
3 to Ground (GND)	about 5 V

Switch the ignition off.

If the specified values are obtained:

-- Replace the Intake Manifold Runner Position Sensor 2 -G512-.

If specified values are not obtained:

Checking wiring

If the manufacturers test box is being used. Perform the following step.

-- Install the test box. Refer to Wiring and Components, Checking with Test Box VAG 1598/42 .

If the manufacturers test box is not being used. Perform the following step.

-- Remove the Engine Control Module (ECM) 2 -J624-. Refer to ENGINE CONTROL MODULE, REMOVING AND INSTALLING .

-- Using a multimeter --, check the Intake Manifold Runner Position Sensor 2 -G512- electrical harness connector terminals to the Engine Control Module (ECM) 2 -J624- electrical harness connector T60b terminals for an open circuit.

Intake Manifold Runner Position Sensor 2 -G512- electrical harness connector terminals	Engine Control Module (ECM) 2 -J624- electrical connector T60b terminals or test box sockets
1	26
2	22
3	14

Specified value: 1.5 Ω Max.

If the specification was not obtained:

-- Check the wiring for a short circuit to each other, Battery (+), Ground (GND), or an open circuit.

-- Check the electrical harness connector for damage, corrosion, lose or broken terminals.

-- If necessary, repair the faulty wiring connection.

If no malfunction is detected in the wiring:

-- Replace the Engine Control Module (ECM) 2 -J624-. Refer to ENGINE CONTROL MODULE, REMOVING AND INSTALLING .

The Intake Manifold Runner Position Sensor 2 -G512- must be adapted to the Engine Control Module (ECM) 2 -J624-.

To adapt the Intake Manifold Runner Position Sensor 2 -G512- to the Engine Control Module (ECM) 2 -J624- perform the following steps:

Test requirements 

• The battery voltage at least 12.5 V.
• Coolant temperature must be between 20° C and 80° C.
• No DTC's stored in DTC memory.

-- Start the engine and let run at idle for at least 70 seconds.

-- The Engine Control Module (ECM) 2 -J624- will automatically adept the Intake Manifold Runner Position Sensor 2 -G512-.

Assembly is performed in the reverse order of removal.

Final procedures 

After the repair work, the following work steps must be performed in the following sequence:

1. Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .
2. If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
3. If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .

-- End of diagnosis.