Removing and installing injection system components: VW (BJR)

Step-by-step removing and installing injection system components for the VW (BJR): factory workshop text.

Workshop procedure for VW — the factory write-up, straight from real workshop data.

factory workshop text 1 engine code

🔧 Engine codes this applies to

BJR

📋 Procedure

ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.

Removing and installing injection system components
Connector
To engine command unit
Disconnect or connect only with ignition switched off
Command unit
Location: inside vehicle, passenger side
For injection system, lambda probe regulation, activated charcoal filter valve, detonation regulation, rotation limit, ignition and self-diagnosis
Check power supply with
VAS 5051
Procedure after power shortage/interruption
Chapter
Removing and installing
Chapter
In case of replacement, erase self-adaptation values and engine command unit to throttle butterfly body with
VAS 5051
In case of replacement, electronic immobilizer must be adapted
Vehicle diagnosis, testing and information system VAS 5051
Connector
Black, 4 pole
To
Intake collector pressure transmitter
G71
with
Intake air temperature transmitter
G42
Terminal connector contacts, golden
Connector
Black, 3 pole
To
Engine rotation sensor
G28
4,0 Nm
Rigid tube
Air filter cover
Removing and installing
Chapter
Air cleaner valve
Securing clip
Consider version
Guide for tubes
Fixed onto fuel distributor
Connector
Black, 2 pole
To
Injector
N30
...
N33
Supply tubes assy
Black, with white marking
Ensure proper fastening
Comes from fuel filter
Chapter
10 Nm
Fuel distributor with injectors
Removing and installing
Chapter
20 Nm
Connector
Black, 6 pole
To
Command unit of throttle butterfly valve
J338
Terminal connector contacts, golden
Comes from
Valve to activated charcoal filter
N80
Fasten with spring braces
Comes from servo-brake
Intake manifold
Removing and installing
Chapter
Vent valve
Sealing ring
Renew
Observe correct position
Lambda probe, 40 Nm
Location: on front exhaust tube
Lubricate thread only with
G 052 112 A3
Remove and install with wrench set for
Lambda probe
3337
Electric feeding of probe heating through fuel
Pump relay
J17
Check Lambda probe heating with
VAS 5051
Check lambda probe and lambda probe regulation with
VAS 5051
4 pole connector
Black
To lambda probe
3 and 4 contacts, golden
Engine rotation sender
G28
Location: engine block, intake side
Consult with
VAS 5051
5,0 Nm
Guide tube
For oil level stick
3 Nm
Observe note referring to assembly
Chapter
Securing clip
Ensure it is properly installed
Sealing ring
Renew
Connector
Black, 4 pole
To
Cooling fluid temperature sensor
G62
and
Cooling fluid temperature indicator sensor
G2
Terminal connector contacts, golden
Closing cover
Before removing it, reduce cooling system pressure
Cooling fluid temperature sensor
G62
To engine command unit
With
Sensor for cooling fluid temperature indicator
G2
Before removing it, reduce cooling system pressure
Thermostatic valve body

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Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.

Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com

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Workshop data on this page last updated 20 Sep 2026.