User Manual

E6X Manual
113
The majority of modern ignition modules are the Constant Charge type with inbuilt current
control. Current control limits the primary current to avoid damage to ignition components,
primarily the Ignition Coil. The primary current charge time is read in milliseconds and is
controlled by the coil charge time field. The primary charge time will usually vary between
1.4 ms and >4 ms (some older systems may be up to 8.7ms) depending on the vehicle
manufacturer and ignition system used.
Coil Charge time
The following is a guide to primary charge time and spark duration time for different
coil charge times.
Coil T
yp
e T
yp
ical Char
g
e time
Sin
g
le Standard Coi
l
2.5 ms
Sin
g
le Fast Char
g
e Coi
l
2 ms
Coil On Plu
g
1.8 ms
Dual Post Coi
l
3.5 ms
Mounting and setup tips
The Ignition Module should be mounted on a flat surface (eg. the firewall) to ensure proper
heat dissipation and to avoid stress on the wiring connections. It is also important to prevent
the module overheating by mounting it away from hot components such as exhaust manifolds
and turbochargers.
When using a Haltech ignition module use the included wiring diagram for your ignition
module. Follow the directions on these instructions to connect your ignition module(s) to your
main wiring harness. Locate the ignition wires in the main loom. Using the supplied pins,
crimp the pins onto the appropriate wires and insert them into the appropriate locations in the
igniter plug, but do not connect it to the igniter until the ignition settings in the ECU are
verified by connecting the ECU to a computer with Haltech programming software.
The following can cause faults in the Ignition Module
• Over heating.
• Poor power or ground circuits*.
• Incorrect coil charge time or duty percentage
• Incorrect output type (constant duty or constant charge)
• Incorrect output edge
*The Igniter ground circuit is vital to the operation of the Igniter. If the ground is not in
good condition, it can cause a reduction in primary current which effects current limiting or
dwell control. Voltage Drop over this circuit should be tested under load with an
oscilloscope. The voltage ramp should be less than 0.15 Volts. Do not ground the Igniter at
the same point as the ECU. This can cause interference with ECU’s signals.