Volkswagen Golf / Golf Plus. Manual - part 326

 

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Volkswagen Golf / Golf Plus. Manual - part 326

 

 

1 - Connector

❑ Black, 6-pin.

2 - Accelerator position sender

-G79-

❑ Not adjustable.
❑ The accelerator position

sender passes the posi‐

tion of the accelerator

on to the engine control

unit.

❑ To remove, release us‐

ing release tool -

T10238- or  release tool

-T10240- .

-A- openings for release tool -

T10238- .

3 - 10 Nm
4 - Cap

5.3.1

Removing

Special tools and workshop equipment required
♦ Release tool -T10238-

4-cylinder diesel engine (1.9 l engine) - Edition 01.2009

142

     Rep. Gr.20 - Fuel supply system

 

– Lever out cap 

⇒ Item 4 (page 142)

 using a screwdriver.

– Remove bolt 

⇒ Item 3 (page 142)

 .

Releasing accelerator pedal module
– To remove accelerator pedal module, push release tool -

T10238- (for right-hand drive vehicles release tool -T10240- )

into openings provided to stop.

– Separate electrical connection and pull wire guide off accel‐

erator pedal module.

5.3.2

Installing

Installation is carried out in the reverse order. When installing,

note the following:
– Push electrical connector -1- onto accelerator pedal module.
– Press accelerator pedal module onto securing pins -5-.
– Insert centring pin -6- into hole in floor of vehicle.
– Secure accelerator pedal module with bolt -2-, specified tor‐

que 10 Nm and fit cap -3-.

– Install steering column trim.

5.4

Checking tandem pump

Checking delivery pressure 

⇒ page 143

Checking for internal leaks 

⇒ page 146

5.4.1

Checking delivery pressure

Special tools and workshop equipment required
♦ Vehicle diagnosis, testing and information system -VAS 5051-

4-cylinder diesel engine (1.9 l engine) - Edition 01.2009

5. Repairing fuel supply system    

143

 

♦ Tandem pump tester -VAS 5187-

♦ Banjo bolt -5187/1A-

♦ Torque wrench -V.A.G 1331-
Test prerequisites
• Coolant temperature must be at least 85 °C.
• Unit injectors OK
• Fuel filter and fuel lines must not be blocked.
• The non-return valve in the fuel supply hose must be OK.
• Intact fuel delivery unit

4-cylinder diesel engine (1.9 l engine) - Edition 01.2009

144

     Rep. Gr.20 - Fuel supply system

 

VAS 5051- and select “vehicle self-diagnosis” operating mode.

– Press key “01 - Engine electronics” on display.
– Press diagnosis function “08 - Read measured value block”.
– Enter display group “1” using number block (key pad) and

confirm entry with Q key.

– Read engine idling speed in display zone “1”.
– Increase engine speed to 4,000 rpm.
– Observe pressure indicated on pressure gauge.
Specification: min. 7.5 bar
If the specification is not attained:
– Using a hose clip, clamp off return line between fuel filter and

tandem pump.

– Increase engine speed to 4,000 rpm.
– Observe pressure indicated on pressure gauge.
Specification: min. 7.5 bar
If specification is now obtained:
Pressure loss at unit injectors.
– Renew unit injector O-rings.
If the specification is not attained:
– Renew tandem pump. 

⇒ page 147

Note

After removing pressure tester, tighten plug to 25 Nm. Always

renew seal.

4-cylinder diesel engine (1.9 l engine) - Edition 01.2009

5. Repairing fuel supply system    

145

 

 

 

 

 

 

 

 

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