Verify that the continuity LED is lit, and the output LED is flashing.
Note:
Output LED may flash so quickly that it appears to be continuously on. This is normal.
If the continuity LED does not light, and the output LED is not flashing, then check all electrical connections. If all electrical connections are
good, then proceed to para 3.7.
3.7. Wiring Harness Test Results
1.
If the continuity LED lights and the output LED flashes, the wiring harness for that fuel injector is good.
2.
If the continuity LED fails to light, then there is a problem with the fixed voltage wire in the injector wiring harness. Use a digital multimeter
to check for an open or short circuit.
3.
If the output LED does not flash then
a) Check fuel injector wiring harness for an open or short circuit in the wire that turns the fuel injector ON and OFF.
b) The driver in the engine management ECU may be faulty. Substitute known good unit and retest.
c) Check ignition system. For safety reasons, most fuel injection systems will not deliver fuel without the presence of
ignition reference pulses from the ignition module.
Note:
This only applies to a "No Start" condition.
4.
Disconnect Tester from wiring harness and from vehicle battery. Reconnect all injector harnesses. Start and run engine to be sure that
all injectors are firing normally.
3.
Set Injector/Harness switch to Harness.
4.
Connect appropriate harness adaptor to the interface cable.
5.
Connect Fuel Injector/Wiring Harness Interface Cable to injector harness being tested using
the adaptor (fig.4). For all harness adaptors, either wire may be connected to either terminal
of the harness. The tester is designed in such a way that hook-up orientation does not matter.
Note:
The continuity LED may be bright, dim or off. The status of 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 Power LED is lit before continuing.
2.
Carefully disconnect wiring harness to be tested from fuel injector. Do not jerk or pull
on wires - some harnesses are attached with clips (fig. 2).
It is a good idea to test injector wiring harnesses in sequence, beginning with cylinder No.1.
7.
Start the engine - if engine will not start, then have an assistant crank the engine. Observe the LEDs.
Note:
vehicle may start and run even with one or more injectors disconnected. This does not affect
the harness test.
Observe all safety precautions.
4. CARE & MAINTENANCE
1.
Keep all Fuel Injector & Harness Tester electrical connections clean and free of corrosion.
2.
If tester face becomes dirty, wipe clean with a damp rag.
DO NOT
use alcohol or other strong solvents as they may remove face printing.
3.
Use care to prevent tester wiring insulation from becoming chafed or broken. Do not use tester if insulation or wiring is damaged.
4.
When not in use, store instrument in a safe, dry childproof location.
Sole UK Distributor
Sealey Group,
Bury St. Edmunds, Suffolk.
01284 757500
E-mail:
01284 703534
NOTE:
It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT:
No liability is accepted for incorrect use of product.
WARRANTY:
Guarantee is 12 months from purchase date, proof of which will be required for any claim.
INFORMATION:
For a copy of our latest catalogue, call us on 01284 757525 and leave your full name and address including postcode.
VS211-0527-(1)-240599
fig. 4
