Checking Electrical Circuit

If the manufacturers test box is being used, perform the following step.

-- Install the test box.

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

-- Remove the Engine Control Module -J623-. Refer to appropriate service information.

-- Using a multimeter, check the Manifold Absolute Pressure (MAP) Sensor -G71- /Intake Air Temperature (IAT) Sensor -G42- electrical harness connector terminals to the Engine Control Module -J623- electrical harness connector T60 terminals for resistance.

Fig 1: 4-Pin Electrical Harness Connector & Terminals

Courtesy of AUDI OF AMERICA, LLC

Manifold Absolute Pressure (MAP) Sensor -G71- /Intake Air Temperature (IAT) Sensor -G42- electrical harness connector terminals	Engine Control Module -J623- electrical connector T60 terminals or test box socket
1	50
2	41
3	35
4	37

Specified value: 1.5 Ω max.

If any of the specified values were not obtained:

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

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

-- If necessary, repair the faulty wiring connection.

If no malfunction is detected in the wiring and if the voltage supply was OK:

-- Replace theManifold Absolute Pressure (MAP) Sensor -G71- /Intake Air Temperature (IAT) Sensor -G42-.

-- Erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .

-- Perform a road test to verify repair.

If the DTC does not return:

Repair complete, Generate readiness code. Refer to READINESS CODE .

-- End diagnosis.

If the DTC returns and no malfunction is found in the wiring and voltage supply was OK:

-- Replace the Engine Control Module -J623-. refer to the appropriate service information for removal and installation procedures.

Assembly is performed in the reverse order of the removal, note the following: