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MS1-ExtraMegaSquirt v2.2 with Nissan
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Please Note:
All of these instructions / diagrams are to be used at your own risk, like most things there is more than one way to do the same thing, what we have tried to do is to offer a method that we have tested or that others have tested for us. No warranty expressed or implied. Use at your own risk. |
Below is the wiring for the Nissan optical trigger driving the MegaSquirt ECU. Only one of the two optical triggers is required. The other is not connected (NC). Add a 1k ohm 1/2 watt resistor to +12 as shown. Alternately add the 1k ohm resistor internally to MegaSquirt at +12V and to D5 where pin 24 is connected.. Make all the green jumper connections as shown. Use the columns that best fits from the wire color table
You can test your input connection by monitoring IRQ-1 at R11. First set up MS to monitor IRQ with the center front panel LED. Disconnect power to the coil. Put on the hand brake and the transmission in neutral. Now turn the engine such that the crank pulley passes from 20º BTDC to TDC. The IRQ LED should go from On to OFF at ~10º BTDC for most cars with distributor (but it may be from 5º to 15º, usually this is called the static timing)
The MegaSquirt will in turn then drive a single external coil.
