Variable Intake Manifold Runner Motor, Checking

Special tools and workshop equipment required 

• Multimeter.
• Wiring diagram.

Test requirements 

• Fuse -SA3- 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 Variable Intake Manifold Runner Motor -V183- electrical harness connector -2-.

Crank the engine.

-- Using a Multimeter --, check the Variable Intake Manifold Runner Motor -V183- electrical harness connector terminal 1 to 3 for voltage.

Switch the ignition off.

Specified value: battery voltage.

If the specified value was not obtained:

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

-- Check the wiring from the Variable Intake Manifold Runner Motor -V183- electrical harness connector terminal 1 to the Motronic Engine Control Module (ECM) Power Supply Relay -J271- socket 2/87 for a short circuit to each other, Battery (+), Ground (GND), or an open circuit.

-- Check the wiring from the Variable Intake Manifold Runner Motor -V183- electrical harness connector terminal 3 to the to the Ground (GND) connection on the 3 on the firewall for a short circuit to each other, Battery (+), or an open circuit.

-- If necessary, repair the faulty wiring connection.

If the specified value was 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) -J623-. Refer to ENGINE CONTROL MODULE, REMOVING AND INSTALLING .

-- Using a multimeter --, check the Variable Intake Manifold Runner Motor -V183- electrical harness connector terminal 2 to the Engine Control Module (ECM) -J623- electrical harness connector T60a terminal 6 for an open circuit.

Variable Intake Manifold Runner Motor -V183- electrical harness connector terminals	Engine Control Module (ECM) -J623- electrical connector T60a terminals or test box sockets
2	6

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) -J623-. Refer to ENGINE CONTROL MODULE, REMOVING AND INSTALLING .

The Variable Intake Manifold Runner Motor -V183- must be adapted to the Engine Control Module (ECM) -J623-.

To adapt the Variable Intake Manifold Runner Motor -V183- to the Engine Control Module (ECM) -J623- 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) -J623- will automatically adept the Variable Intake Manifold Runner Motor -V183-.

-- 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.