Haltech HT051400 - Manual (Page 13)

Ignition Outputs
The Platinum Sport Series ECU's cannot control the ignition coils directly – rather some
sort of ignition amplifier such as a power transistor, Haltech ignition module or high
intensity spark unit (CDI unit eg MSD 6A, crane HI6, M&W pro12 etc) must be used
to interface the ECU with the coils. This ignition module supplies the ground to the
coil only when the ECU directs it to – each coil also requires a 12V source (with the
exception of CDI units where the 12V will often come from the CDI unit itself).
Many factory cars will have ignition modules external to the ECU also. These
factory modules can be used in conjunction with the Platinum Sport ECU's.
The ignition output wires from the Platinum Sport wire harness should be used to trigger
the ignition amplifier – when wiring the ignition amplifier ensure that the system is
wired in cylinder order for direct fire ignition setup or in order of the outputs for waste spark
setup. (ie Ign 1 will fire first, then Ign 2 will fire next etc until the last ignition channel is reached
regardless of engine firing order.)
Figure 9 – Ignition Wiring using Haltech Ignition Module
Figure 10 – Ignition Wiring Using CDI Unit
Status LED Display Sequence Example
Conditions: Ignition On
Engine Not Running
Power on
LED on for 1.2 Seconds
Pause 1 second
Flash first digit of first code, 0.4 seconds
between flashes
Pause 1.2 seconds between digits
First Error Code
Flash second digit of first code, 0.4 seconds
between flashes
Pause 2 Seconds
Flash first digit of first code, 0.4 seconds
between flashes
Pause 1.2 seconds between digits
Next Error Code
Flash second digit of first code, 0.4 seconds
between flashes
After last code, Pause 4.5 seconds
Conditions: Ignition On
Engine Cranking
Trigger / Home Status is displayed
• If only Trigger detected, single flash
• If only Home detected, double flash
• If Trigger and Home detected, then triple flash displayed
1. COIL NEGATIVE #1
2. CHASSIS GROUND
3. N/A
4. +12V IGNITION
5. ECU IGNITION OUTPUT #1
6. N/A
7. N/A HALTECH
HECU1
7 6 5 4 3 2 1
+
-
+12V SW ITCHED G ROUND
Haltech HECU1 Pinout
HALTECH 1 CHANNEL IGNITION MODULE
HALTECH
ECU
IGN 1
COIL # 1
+
-
+12V SWITCHED
GROUND
HALTECH
ECU
IGN 1 COIL # 1 CDI UNIT