Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 213

Test requirements
• Fuses OK.
• Battery voltage OK.
• Switch OFF all electrical and electronic accessories.
• Vehicles with Auto. Transmission, ensure Selector Lever po‐

sition is in “P”.

• Vehicles with Man. Transmission, ensure Shifter Lever posi‐

tion is in “N” with Parking Brake applied.

• Coolant Temperature: ≥ 80° C.
• Observe all safety precautions:

⇒ “1.1 Safety Precautions”, page 2

• View clean working conditions:

⇒ “1.2 Clean Working Conditions”, page 3

• For Hybrid vehicles refer to:

⇒ “1.3 High Voltage System General Warnings”, page 4

Test Procedure

Step

Procedure

Result / Action to Take

• PERFORM: Preliminary Check to verify the

customers concern. Refer to

⇒ “3.1 Preliminary Check ”, page 18

– Was Complaint verified?

– YES:

♦ GO TO: Step 2

⇒ page 525

– NO:

♦ GATHER more information from customer

about the complaint.

• IGNITION: OFF.
• CONNECT: Scan Tool.
• IGNITION: ON.
• CHECK: Throttle valve position closed.
• SPECIFIED VALUE: 3 - 25%.
• DEPRESS: Accelerator pedal slowly to WOT

while observing the percentage display. The

percentage display must increase uniformly.

• CHECK: Throttle valve position at WOT.
• SPECIFIED VALUE: 84 - 97%.
• IGNITION: OFF.
– Was Value obtained?

– YES:

♦ GO TO: Step 3

⇒ page 525

– NO:

♦ GO TO: Step 4

⇒ page 526

• CONDITION: May be intermittent.
• PERFORM: Visual Inspection of wiring and

component.

• CHECK: Wiring for open, high resistance,

short or harness connector for damage, corro‐

sion, loose or broken terminals.

• REPAIR: Faulty wiring or connector.

♦ GO TO: Step 7

⇒ page 527

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3. Diagnosis and Testing

525

Step

Procedure

Result / Action to Take

• REMOVE: Throttle Valve Control Module -

J338 - far enough so that the harness connec‐

tor terminals are accessible.

• DISCONNECT: Throttle Valve Control Module

- J338- harness connector.

• IGNITION: ON.
• CHECK: Throttle Valve Control Module - GX3-

harness connector terminals 2 to 6 for voltage.

• CHECK: Throttle Valve Control Module - GX3-

harness connector terminal 2 to ground for

voltage.

• IGNITION: OFF.
• SPECIFIED VALUE: About 5.0 V.
– Were Values obtained?

– YES:

♦ GO TO: Step 5

⇒ page 526

– NO:

♦ GO TO: Step 6

⇒ page 526

• REMOVE: Engine Control Module - J623- .

Refer to appropriate repair manual.

• CHECK: Throttle Valve Control Module - GX3-

harness connector terminal 1 to the Engine

Control Module - J623- harness connector

T105 / 55 for resistance.

• CHECK: Throttle Valve Control Module - GX3-

harness connector terminal 3 to the Engine

Control Module - J623- harness connector

T105 / 90 for resistance.

• CHECK: Throttle Valve Control Module - GX3-

harness connector terminal 4 to the Engine

Control Module - J623- harness connector

T105 / 34 for resistance.

• CHECK: Throttle Valve Control Module - GX3-

harness connector terminal 5 to the Engine

Control Module - J623- harness connector

T105 / 91 for resistance.

• SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
– Were Values obtained?

– YES:

♦ GO TO: Step 7

⇒ page 527

– NO:

♦ PERFORM: Visual Inspection of wiring and

component.

♦ CHECK: Wiring for open, high resistance,

short or harness connector for damage, corro‐

sion, loose or broken terminals.

♦ REPAIR: Faulty wiring or connector.
♦ GO TO: Step 7

⇒ page 527

• REMOVE: Engine Control Module - J623- .

Refer to appropriate repair manual.

• CHECK: Throttle Valve Control Module - GX3-

harness connector terminal 2 to the Engine

Control Module - J623- harness connector

T105 / 54 for resistance.

• CHECK: Throttle Valve Control Module - GX3-

harness connector terminal 6 to the Engine

Control Module - J623- harness connector

T105 / 56 for resistance.

• SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
– Were Values obtained?

– YES:

♦ GO TO: Step 7

⇒ page 527

– NO:

♦ PERFORM: Visual Inspection of wiring and

component.

♦ CHECK: Wiring for open, high resistance,

short or harness connector for damage, corro‐

sion, loose or broken terminals.

♦ REPAIR: Faulty wiring or connector.
♦ GO TO: Step 7

⇒ page 527

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526

Rep. Gr. ST - Generic Scan Tool

Step

Procedure

Result / Action to Take

• Final Procedure
• Perform a road test to verify repair.
– Does the original DTC return?

– YES:

♦ CHECK: Engine Control Module - J623- har‐

ness connector for any damaged, pushed-out

pins.

♦ REPAIR: As necessary.
♦ Clear the DTC’s. Refer to

⇒ “3.3.4 Diagnostic Mode 04 - Erase DTC

Memory”, page 26

♦ Repair is complete. Generate Readiness

Code. Refer to

⇒ “3.2 Readiness Codes”, page 19

♦ Return vehicle to Customer.
♦ If all electrical connections are OK:
♦ REPLACE: Engine Control Module - J623- .

Refer to appropriate repair manual.

♦ Repair is complete. Generate Readiness

Code. Refer to

⇒ “3.2 Readiness Codes”, page 19

♦ Return vehicle to Customer.
– NO:

♦ Perform the diagnostic procedure for any

DTC’s.

♦ If no DTC’s return the repair is complete.
♦ Return vehicle to customer.

3.6.32

Turbocharger Recirculation Valve -

N249- , Checking

General Description
A Turbocharger Recirculation Valve - N249- keeps a portion of air

running through the intake side of the turbocharger when the

throttle valve is closed and boost pressure is still present. This

keeps the turbocharger impeller from slowing down, reducing tur‐

bo lag when the throttle is applied again.
Special tools and workshop equipment required
♦ Multimeter.
♦ Wiring Diagram.
♦ Scan Tool.
Test requirements
• Fuses OK.
• Battery voltage OK.
• Switch OFF all electrical and electronic accessories.
• Vehicles with Auto. Transmission, ensure Selector Lever po‐

sition is in “P”.

• Vehicles with Man. Transmission, ensure Shifter Lever posi‐

tion is in “N” with Parking Brake applied.

• Coolant Temperature: ≥ 80° C.

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing

527