Volkswagen Golf / Golf GTI / Golf Variant. Manual — part 201
Step
Procedure
Result / Action to Take
4
• 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.
3.6.10
Engine Coolant Temperature Sensor
On Radiator Outlet - G83- , Checking
General Description
The Engine Coolant Temperature Sensor On Radiator Outlet -
G83- sends information about the current coolant temperature to
the Engine Control Module - J623- . It uses the coolant tempera‐
ture as a correction value for calculating the injection quantity.
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
477
• 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:
♦ GO TO: Step 2
.
– NO:
♦ GATHER more information from customer
about the complaint.
2
• IGNITION: OFF.
• DISCONNECT: Engine Coolant Temperature
Sensor On Radiator Outlet - G83- harness con‐
nector.
• CHECK: Engine Coolant Temperature Sensor
On Radiator Outlet - G83- component connec‐
tor terminals 1 to 2 for resistance.
• SPECIFIED VALUE: 2,250 Ω (+/- 750 Ω @ ap‐
prox. 20° C).
– Was Value obtained?
– YES:
♦ GO TO: Step 3
.
– NO:
♦ REPLACE: Engine Coolant Temperature Sen‐
sor On Radiator Outlet - G83- . Refer to appro‐
priate repair manual.
♦ GO TO: Step 4
.
3
• REMOVE: Engine Control Module - J623- .
Refer to appropriate repair manual.
• CHECK: Engine Coolant Temperature Sensor
On Radiator Outlet - G83- harness connector
terminal 1 to the Engine Control Module - J623-
harness connector T91 / 49 for resistance.
• CHECK: Engine Coolant Temperature Sensor
On Radiator Outlet - G83- harness connector
terminal 2 to the Engine Control Module - J623-
harness connector T91/ 29 for resistance.
• SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
– Were Values obtained?
– YES:
♦ GO TO: Step 4
.
– 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 4
.
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
478
Rep. Gr. ST - Generic Scan Tool
Step
Procedure
Result / Action to Take
4
• 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.
3.6.11
Engine Speed Sensor - G28- , Checking
General Description
The Engine Speed Sensor - G28- detects rpm and reference
marks from a toothed wheel on the crankshaft. Without an engine
speed signal, the engine will not start. If the engine speed signal
fails while the engine is running, the engine will stop immediately.
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
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
3. Diagnosis and Testing
479
• 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:
♦ GO TO: Step 2
.
– NO:
♦ GATHER more information from customer
about the complaint.
2
• CONNECT: Scan Tool.
• START or CRANK: Engine.
• CHECK: Engine rpm.
• SPECIFIED VALUE: Cranking or Idle rpm.
• IGNITION: OFF.
– Was Value obtained?
– YES:
♦ GO TO: Step 3
.
– NO:
♦ GO TO: Step 4
.
3
• 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
.
4
• DISCONNECT: Engine Speed Sensor - G28-
harness connector.
• IGNITION: ON.
• CHECK: Engine Speed Sensor - G28- wiring
connector terminals 1 to 3 for voltage.
• SPECIFIED VALUE: About 5.0 V.
• IGNITION: OFF.
– Was Value obtained?
– YES:
♦ GO TO: Step 5
.
– NO:
♦ GO TO: Step 6
.
5
• REMOVE: Engine Control Module - J623- .
Refer to appropriate repair manual.
• CHECK: Engine Speed Sensor - G28- harness
connector terminal 2 to the Engine Control
Module - J623- harness connector T105 / 70
for resistance.
• SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
– Was Value obtained?
– YES:
♦ REMOVE: Engine Speed Sensor - G28- . Re‐
fer to appropriate repair manual.
♦ CHECK: Engine Speed Sensor - G28- wheel
for proper seating, damage and/or run - out.
Refer to appropriate repair manual.
♦ Sensor wheel OK
♦ REPLACE: Engine Speed Sensor - G28- . Re‐
fer to appropriate repair manual.
♦ GO TO: Step 7
.
– 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 7
.
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
480
Rep. Gr. ST - Generic Scan Tool
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