Intake Manifold Runner Position Sensor, Checking

Special tools and workshop equipment required 

• Multimeter.
• Wiring diagram.

Test requirements 

• The Engine Control Module (ECM) - J623- fuses OK.
• Battery voltage at least 12.5 volts.
• All electrical consumers such as, lights and rear window defroster, switched off.
• Vehicles with automatic transmission, shift selector lever into position "P" or "N".
• A/C switched off.
• Ground connections between engine/transmission/chassis OK.
• Ignition switched OFF.

Test procedure 

-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK 

Start diagnosis 

Fig 1: Intake Manifold Runner Position Sensor, Checking

Courtesy of AUDI OF AMERICA, LLC

• 8 - Intake manifold.
• 9 - Intake manifold flap motor.
• 12 - Intake manifold runner position sensor.

Voltage check 

-- Disconnect the Intake Manifold Runner Position Sensor -G336- electrical harness connector.

-- Switch the ignition ON.

-- Using a multimeter, check the Intake Manifold Runner Position Sensor -G336- electrical harness connector terminals 1 to 3 for voltage.

Fig 2: 3-Pin Electrical Harness Connector

Courtesy of AUDI OF AMERICA, LLC

Specified value: near 5 V

-- Switch ignition OFF.

If the specified value was obtained:

-- Replace the Intake Manifold Runner Position Sensor - G336-. Refer to the Repair information.

If the specified value was Not obtained:

Checking wiring 

-- Remove the Engine Control Module (ECM) -J623-. Refer to the Repair information.

-- Using a multimeter, check the Intake Manifold Runner Position Sensor - G336- electrical harness connector terminals to the Engine Control Module (ECM) -J623- electrical harness connector T60 terminals for an open circuit.

Specified value: 1.5 Ω Max.

If the specified value was Not obtained:

-- Check the wiring for an open, high resistance or short to ground.

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

-- If necessary, repair the faulty wiring connection.

If no malfunction is found in wiring and the voltage check was Not OK:

-- Replace the Engine Control Module (ECM) -J623-. Refer to the Repair information.

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 .