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Home >> Volkswagen >> 2012 >> Passat TDI SE, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - Generic Scan Tool - Engine Code: CKRA >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> WASTEGATE Bypass Regulator Valve, Checking >> Test Procedure
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Test Procedure

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

Start diagnosis

-- Remove the engine cover with air filter. Refer to the Repair Information.

Checking internal resistance

-- Disconnect the Wastegate Bypass Regulator Valve -N75- electrical harness connector.

-- Using a multimeter, Check the Wastegate Bypass Regulator Valve -N75- terminals 1 to 2 for resistance.

Specified value: 12 to 18 Ω (at approx. 20° C)

If the specified value was Not obtained:

-- Replace the Wastegate Bypass Regulator Valve -N75- Refer to the Repair Information.

If the specified value was obtained:

Checking Voltage supply

-- Switch the Ignition On.

-- Using a multimeter, Check the Wastegate Bypass Regulator Valve -N75- electrical harness connector terminal 1 to engine ground.

Wastegate Bypass Regulator Valve -N75- electrical harness connector terminal Measure to
1 Ground

Specified value: Battery voltage.

-- Switch the ignition Off.

If the specified value was Not obtained:

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

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

-- If necessary, repair the wiring or connections and replace any open fuses.

If the specified value was obtained:

-- Remove the Engine Control Module (ECM) -J623-.

-- Using a multimeter, Check the Wastegate Bypass Regulator Valve -N75- electrical harness connector terminal to the Engine Control Module (ECM) -J623- electrical harness connector T60 terminal for an open circuit.

Wastegate Bypass Regulator Valve -N75- electrical harness connector terminal Engine Control Module (ECM) -J623- electrical connector T60 terminal
2 52

Specified value: 1.5 Ω max.

If the specified value was Not obtained:

-- Check the wiring for an open or high resistance.

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

-- If necessary, repair the faulty wiring connection.

If the specified value was obtained:

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

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

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