Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 203

– NO:

♦ CHECK: Wiring for open, high resistance,

short or harness connector for damage, corro‐

sion, loose or broken terminals.

♦ REPAIR: Faulty wiring or connector.
♦ REPLACE: Any open fuses.
♦ GO TO: Step 5

• REMOVE: Engine Control Module - J623- .

Refer to appropriate repair manual.

• CHECK: EVAP Canister Purge Regulator

Valve 1 - N80- harness connector terminal 2 to

the Engine Control Module - J623- harness

connector T105 / 3 for resistance.

• SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
– Was Value obtained?

– YES:

♦ GO TO: Step 5

– NO:

♦ 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 5

⇒ “3.3.4 Diagnostic Mode 04 - Erase DTC

• 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

Memory”, page 26

♦ Repair is complete. Generate Readiness

Code. Refer to

♦ 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

⇒ “1.1 Safety Precautions”, page 2

♦ 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.

3.6.14

Exhaust Camshaft Adjustment Valve 1 -

N318- , Checking

General Description
By adjusting the camshafts, power and torque can be increased,

fuel consumption can be improved and emissions reduced, de‐

pending on the load characteristics of the engine. To adjust the

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing

485

camshafts, the Engine Control Module (ECM) - J623- actuates

Exhaust Camshaft Adjustment Valve 1 - N318- . Camshaft ad‐

justers are adjusted by actuator solenoids with the assistance of

the engine oil pressure. Adjusting both camshafts enables a max‐

imum valve overlap of 42° CRK. The valve overlap allows for

internal exhaust gas recirculation.
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 Manual Transmission, ensure Shifter Lever po‐

sition is in “N” with Parking Brake applied.

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

• 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 486

– NO:

♦ GATHER more information from customer

about the complaint.

• IGNITION: OFF.
• DISCONNECT: Exhaust Camshaft Adjust‐

ment Valve 1 - N318- harness connector.

• CHECK: Exhaust Camshaft Adjustment Valve

1 - N318- component connector terminals 1 to

2 for resistance.

• SPECIFIED VALUE: 5 – 30 Ω (@ approx. 20°

C).

– Was Value obtained?

– YES:

♦ GO TO: Step 3

– NO:

♦ REPLACE: Exhaust Camshaft Adjustment

Valve 1 - N318- . Refer to appropriate repair

manual.

♦ GO TO: Step 5

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

486

Rep. Gr. ST - Generic Scan Tool

Step

Procedure

Result / Action to Take

• IGNITION: ON.
• CHECK: Exhaust Camshaft Adjustment Valve

1 - N318- harness connector terminal 1 to

ground for voltage.

• SPECIFIED VALUE: Battery voltage.
• IGNITION: OFF.
– Was Value obtained?

– YES:

♦ GO TO: Step 4

– NO:

♦ CHECK: Wiring for open, high resistance,

short or harness connector for damage, corro‐

sion, loose or broken terminals.

♦ REPAIR: Faulty wiring or connector.
♦ REPLACE: Any open fuses.
♦ GO TO: Step 5

• REMOVE: Engine Control Module - J623- .

Refer to appropriate repair manual.

• CHECK: Exhaust Camshaft Adjustment Valve

1 - N318- harness connector terminal 2 to the

Engine Control Module - J623- harness con‐

nector terminals T105 / 104 for resistance.

• SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
– Was Value obtained?

– YES:

♦ GO TO: Step 5

– NO:

♦ 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 5

⇒ “3.3.4 Diagnostic Mode 04 - Erase DTC

• 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

Memory”, page 26

♦ Repair is complete. Generate Readiness

Code. Refer to

♦ 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