Actron Auto Trouble Shooter User Manual

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Bosch Automotive Service Solutions 28635 Mound Road, Warren, MI 48092 USA. Customer Service: 1-800-228-7667 Email: customerservice@actron.com Data Protection Notice. Auto TroubleShooter Digital Multimeter Engine Analyzer This ingenious tool performs all standard electrical tests for on-car and bench troubleshooting. Locate faulty wiring, test electrical components, engine sensors, ignition and fuel systems and starting/charging system voltage. Actron Connect Login Online Spares X. Wall Hung Split Systems; Multi Split Systems. FAQ's & Troubleshooting. Frequently Asked Questions: 1. The air conditioner is not running at all and no control lights are on. Auto mode is recommended so the A/C unit will select heat in. Actron Diagnostics auto tool updates and downloads ensure your autoscanner remains working efficiently. Product manuals & additional information here.

24

Ignition Coil Switching Action

This test checks to see if the negative
terminal of the primary ignition coil is
getting switched ON and OFF via the
ignition module and camshaft / crank-
shaft position sensors. This switching
action is where the RPM or tach signal
originates. This test is primarily used for
a no start condition.

Test Procedure (see Fig. 29):

Fig. 29

Typical

Ignition

Coil

Auto user manuals

Ground

Black

Red

Auto

1. Insert BLACK test lead into COM

test lead jack.

2. I n s e r t R E D t e s t l e a d i n t o

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test lead jack.

3. Connect RED test lead to TACH

signal wire.

• If vehicle is DIS (Distributorless

Ignition System), then connect RED
test lead to the TACH signal wire
going from the DIS module to the
vehicle engine computer. (refer to

Auto User Manuals

vehicle service manual for location
of this wire)

• For all vehicles with distributors,

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connect RED test lead to negative
side of primary ignition coil. (refer
to vehicle service manual for loca-
tion of ignition coil)

4. Connect BLACK test lead to a good

vehicle ground.

5. Turn multimeter rotary switch

to correct CYLINDER selec-
tion in RPM.

6. View reading on display while

engine is cranking.

• Typical cranking RPM range

is 50-275 RPM depending on
temperature, size of engine,
and battery condition.

• Refer to vehicle service

manual for specific vehicle
cranking RPM range.

7. Test Results.

Good Coil Switching Action: Display
reading indicated a value consistent
with manufacturers specifications.

Bad Coil Switching Action:

• Display read zero RPM, meaning

the ignition coil is not being
switched ON and OFF.

• Check ignition system for wiring

defects, and test the camshaft and
crankshaft sensors.

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