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3

Always wear approved eye protection.

3

Always operate the vehicle in a well-ventilated area. Do not inhale exhaust gases - they are very poisonous!

3

Always keep yourself, tools, and test equipment away from all moving or hot engine parts.

3

Always make sure the vehicle is in Neutral (manual transmission) or Park (automatic transmission) and that the parking brake is firmly

applied. Block the drive wheels.

3

Always keep handy a fire extinguisher suitable for fuel/electrical/chemical fires.

3

Always turn ignition key ‘OFF’ when connecting or disconnecting electrical components, unless otherwise instructed.

3

Use shop rags to cover fuel line fittings when connecting or disconnecting fuel lines or gauges. Avoid contact with petrol. 

3

Dispose of all rags properly.

3

Clean up all fuel spills immediately.

3

Keep away from engine cooling fan. On some vehicles, the fan may start up unexpectedly.

3

You must follow vehicle service manual cautions when working around the air bag system. If the cautions are not followed the air bag 

may deploy unexpectedly, resulting in personal injury. Note that the air bag can still deploy several minutes after the ignition key is turned

‘OFF’ (or even if the battery is disconnected) because of a special energy reserve module.

3

Always follow vehicle manufacturer's warnings, cautions and service procedures.

3

Always relieve fuel pressure before disconnecting fuel lines.

3

The Fuel Injector & Harness Tester requires an optional fuel pressure gauge VS210 to be used for fuel injector testing. Always follow all 

safety guidelines and testing procedures contained in the instruction manual provided with the fuel pressure gauge.

In recent years, fuel injection has become standard equipment on most new vehicles.

Although far more reliable and efficient than carburettors, fuel injection systems have

their own unique problems. In many cases, fuel injection problems can be linked to

blocked or sticky fuel injectors. Testing fuel injectors was once a complicated and

inaccurate procedure, but, with the VS211 Fuel Injector & Harness Tester, you can now

quickly and easily locate any malfunctioning fuel injector without removing it from the vehicle. 

The VS211 Fuel Injector & Harness Tester is a hand-held device used to check the

function of fuel injectors and their associated wiring harnesses on most vehicles. The

VS211 tests for clogged or leaking fuel injectors by using a single, half-second pulse.

Multiple 5-millisecond pulses are used to test for sticky or sluggish fuel injectors. By

using a fuel pressure gauge VS210 (optional) and comparing fuel pressure differences 

VS211

FUEL INJECTOR & HARNESS TESTER

The use of symbols in this document is to attract your attention to possible danger. The symbols and warnings themselves do not eliminate any danger, nor are they substitutes for proper

accident prevention measures.

Thank you for purchasing a Sealey product. Manufactured to a high standard this product will, if used according to these instructions and

properly maintained, give you years of trouble free performance.

IMPORTANT

PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS, AND CAUTIONS.

USE THIS PRODUCT CORRECTLY AND WITH CARE, FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE

DAMAGE, OR PERSONAL INJURY, AND WILL INVALIDATE THE WARRANTY.

1. SAFETY INSTRUCTIONS

2. INTRODUCTION

7

Never lay tools on vehicle battery. You may short the terminals together, causing harm to yourself,

the tools, or the battery.

7

Never smoke or have open flames near vehicle. Vapours from petrol and charging batteries

are highly flammable and explosive.

7

Never leave vehicle unattended while running tests.

7

Do not confuse Air Conditioning schrader valves with the fuel rail test port.

as each fuel injector is pulsed, faulty injectors can quickly be identified. In addition, the VS211 Fuel Injector &

Harness Tester is able to test fuel injection wiring harnesses for faulty wiring and connectors.

Power LED (1)

- As soon as the battery clips are attached to the vehicle battery the Power LED will light. This 

verifies a good power connection.

Continuity LED (2) 

- Indicates a good connection to the fuel injector or fuel injector wiring harness. This must be 

lit before proceeding with any testing.

Output LED (3)

- Indicates the presence of a signal from the vehicle's on-board computer to the fuel injector OR

a pulse from the tester to the fuel injector.

Trigger Button (4)

- Activates fuel injector test pulses.

Injector/Harness Switch (5)

- Selects ‘fuel injector’ or ‘fuel injector wiring harness’ testing.

Single/Multiple Pulses Switch (6)

- Switches between one half-second and multiple 5-millisecond test pulses,

produced when the Trigger Button is pressed.

Battery Clips (7)

- Attach to vehicle battery to power the Fuel Injector & Harness Tester.

Fuel Injector/Wiring Harness Interface Cable (8)

- Connects the Fuel Injector & Harness Tester to a fuel injector

or fuel injector harness for testing via adaptors.

Fuel Injector/ Wiring Harness Adaptors (fig.1)

- Used to connect interface cable to vehicle. Since all vehicles

are different, several colour coded adaptors are included. 

Same colour adaptors are used for the same application - one 

adaptor is used to connect the interface cable to the fuel injector

and the other connects the interface cable to the wiring harness.

fig. 1

VS211-0527-(1)-240599

Summary of Contents for VS211

Page 1: ...ing fuel pressure differences VS211 FUEL INJECTOR HARNESS TESTER The use of symbols in this document is to attract your attention to possible danger The symbols and warnings themselves do not eliminate any danger nor are they substitutes for proper accident prevention measures Thank you for purchasing a Sealey product Manufactured to a high standard this product will if used according to these ins...

Page 2: ...ssure Gauge VS210 not included to fuel line Some vehicles have a schrader valve located on the fuel rail for this purpose On vehicles without schrader valves you must open the fuel line at the appropriate point to insert a fuel pressure gauge adaptor IMPORTANT Always follow fuel pressure gauge and vehicle service manual instructions and safety precautions when opening fuel lines The information in...

Page 3: ...r cylinder Start and run the engine briefly after pulsing fuel once into all cylinders This clears excess fuel from the intake ports Failure to do so could cause difficult starting severe engine flooding catalytic converter damage or fire 1 Carefully disconnect wiring harness from fuel injector to be tested Note Do not jerk or pull on wires some harnesses are attached with clips fig 2 It is a good...

Page 4: ... the continuity LED becomes important in later testing 6 Turn vehicle ignition key ON but do not start vehicle On most vehicles the continuity LED will now be on If the continuity LED remains off further testing will determine if a problem exists 3 6 Injector Harness tests 1 Connect Tester to vehicle battery RED clip to the positive terminal and BLACK clip to the negative terminal Ensure that Powe...

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