Ignition Scope (Secondary Ignition Tests) - Snap-On ZEUS User Manual

Scope and Multimeter Operations

8.60.5 Ignition Scope (Secondary Ignition Tests)

The following options are available for secondary ignition testing:
Parade
•
Cylinder
•
Raster
•
Superimposed
•
Single Cylinder Ignition
•
Selecting one of the main menu options opens the lab scope configured to display
secondary ignition waveforms for conventional and select CIC and COP systems.
To display secondary ignition waveforms, optional secondary ignition coil
adapter(s) and a coil adapter lead assembly are required.
Contact your sales representative to purchase the optional adapter leads and/or
Secondary Ignition Clip-on or COP/CIC Adapters.
Adapter lead assembly needed:
•
Secondary Coil Adapter Lead Assembly - connects the diagnostic tool to a
–
secondary ignition adapter (yellow and black scope connectors and black
RCA type adapter connector). See
and Clip-on Adapter (optional)
Secondary Ignition Adapters available:
•
Different secondary ignition coil adapters are available as optional equipment.
These adapters attach to either the secondary lead (spark plug lead) or directly
to the secondary ignition coil in order to pick up the secondary ignition signal.
Universal kV Ignition Clip-on adapter - clips over a spark plug or coil lead.
–
See
Secondary Ignition Coil Adapter Lead and Clip-on Adapter (optional)
page 128.
Universal stick and flag type adapters - are positioned next to or on a
–
secondary ignition coil.
• General purpose single flag pick-up.
• General purpose stick pick-up.
Vehicle specific Clip-on adapters are directly attached to (or next to) a
–
secondary ignition coil (COP type) or to a distributor cap (CIC type).
Secondary ignition coil-on-plug (COP) and coil-in-cap (CIC) adapters are
available for universal and engine specific applications. All the adapters
listed are available individually.
• OEM specific COP adapters:
• Ford (COP-1)
• Chrysler (COP-2)
Secondary Ignition Coil Adapter Lead
on page 128.
• VW/Audi (COP-3)
• Acura/Honda/Isuzu (COP-4)
• Volvo/BMW (COP-5)
• Mercedes-Benz (COP-6)
• Mercedes-Benz Dual Type (COP-7)
• BMW (COP-8)
• Lexus (COP-9)
• Chrysler/Jeep/Lexus/Toyota (COP-11)
• OEM specific CIC adapters:
• GM HEI (CIC-1)
•
Toyota/Honda (CIC-2)
z
Connecting the Secondary Coil Adapter Leads:
1. Connect the black (ground) lead into the diagnostic tool test lead ground jack.
2. Connect the yellow lead into the diagnostic tool test lead channel 1 jack.
3. Connect the adapter lead ground clamp to vehicle ground. If a jumper wire is
used to extend the length of the adapter lead ground clamp lead, keep it as
short as possible.
4. Connect the adapter lead RCA plug into the secondary ignition "clip-on" or
COP/CIC coil adapter as needed.
5. Clamp the secondary clip-on adapter over a spark plug or coil lead, or attach
the applicable COP/CIC coil adapter to the vehicle ignition coil.
6. Isolate the leads from other components to avoid any unwanted noise that
may be induced into the signal.
on
7. From the lab scope function, select the Ignition Probe (probe setting).
8. If needed, turn the Invert function on.
Once a signal is displayed, further channel settings may be required to display the
pattern characteristics you are looking for.
Figure 8-3 Typical Secondary Ignition Signal
96
Technical Specifications (Scope Module)