Volkswagen Golf / Golf GTI / Golf Variant. Manual — part 198
load. The camshaft timing control function is disabled if adaptation
is not performed successfully.
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.
• 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
1
• PERFORM: Preliminary Check to verify the
customers concern. Refer to
⇒ “3.1 Preliminary Check ”, page 18
– Was Complaint verified?
– YES:
– NO:
♦ GATHER more information from customer
about the complaint.
2
• IGNITION: OFF.
• DISCONNECT: Camshaft Position Sensor 3 -
G300- harness connector.
• IGNITION: ON.
• CHECK: Camshaft Position Sensor 3 - G300-
harness connector terminals 1 to 3 for voltage.
• SPECIFIED VALUE: About 5.0 V.
• IGNITION: OFF.
– Was Value obtained?
– YES:
– NO:
3
• REMOVE: Engine Control Module - J623- .
Refer to appropriate repair manual.
• CHECK: Camshaft Position Sensor 3 - G300-
harness connector terminal 2 to the Engine
Control Module - J623- harness connector
T105 / 28 for resistance.
• SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
– Was Value obtained?
– YES:
– 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 5
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
3. Diagnosis and Testing
465
Step
Procedure
Result / Action to Take
4
• REMOVE: Engine Control Module - J623- .
Refer to appropriate repair manual.
• CHECK: Camshaft Position Sensor 3 - G300-
harness connector terminal 1 to the Engine
Control Module - J623- harness connector
T105 / 48 for resistance.
• CHECK: Camshaft Position Sensor 3 - G300-
harness connector terminal 3 to the Engine
Control Module - J623- harness connector
T105 / 29 for resistance.
• SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
– Were Values obtained?
– YES:
♦ GO TO: Step 5
.
– 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 5
.
5
• 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
.
♦ 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.
3.6.5
Camshaft Position Sensor - G40- ,
Checking
General Description
Using the signal from the Camshaft Position Sensor - G40- , the
precise position of the camshaft relative to the crankshaft is de‐
termined very quickly when the engine is started. Used in combi‐
nation with the signal from the Engine Speed Sensor - G28- , the
signal from the Camshaft Position Sensor - G40- allows to detect
which cylinder is at TDC. The fuel can be injected into the corre‐
sponding cylinder and ignited.
Special tools and workshop equipment required
♦ Multimeter.
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
466
Rep. Gr. ST - Generic Scan Tool
♦ 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.
• 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
1
• PERFORM: Preliminary Check to verify the
customers concern. Refer to
⇒ “3.1 Preliminary Check ”, page 18
– Was Complaint verified?
– YES:
– NO:
♦ GATHER more information from customer
about the complaint.
2
• IGNITION: OFF.
• DISCONNECT: Camshaft Position Sensor -
G40- harness connector.
• IGNITION: ON.
• CHECK: Camshaft Position Sensor - G40- har‐
ness connector terminals 1 to 3 for voltage.
• SPECIFIED VALUE: About 5.0 V.
• IGNITION: OFF.
– Was Value obtained?
– YES:
– NO:
3
• REMOVE: Engine Control Module - J623- .
Refer to appropriate repair manual.
• CHECK: Camshaft Position Sensor - G40- har‐
ness connector terminal 2 to the Engine Con‐
trol Module - J623- harness connector termi‐
nals T105 / 30 for resistance.
• SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω)
– Was Value obtained?
– YES:
– 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 5
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
3. Diagnosis and Testing
467
Step
Procedure
Result / Action to Take
4
• REMOVE: Engine Control Module - J623- .
Refer to appropriate repair manual.
• CHECK: Camshaft Position Sensor - G40- har‐
ness connector terminal 1 to the Engine Con‐
trol Module - J623- harness connector T105 /
35 for resistance.
• CHECK: Camshaft Position Sensor - G40- har‐
ness connector terminal 3 to the Engine Con‐
trol Module - J623- harness connector T105 /
47 for resistance.
• SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
– Were Values obtained?
– YES:
♦ GO TO: Step 5
.
– 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 5
.
5
• 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
.
♦ 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.
3.6.6
Charge Air Pressure Sensor - G31- ,
Checking
General Description
The Charge Air Pressure Sensor - G31- is located in the inlet to
the intake manifold. The Engine Control Module - J623- uses the
sensor signal to regulate the turbo boost. There is no substitute
function in the event of signal failure. Charge air pressure regu‐
lation is shut off, leading to a significant reduction in engine
output.
Special tools and workshop equipment required
♦ Multimeter.
♦ Wiring Diagram.
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
468
Rep. Gr. ST - Generic Scan Tool
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