MrBrown
Active member
- Joined
- Mar 9, 2011
No stim/just bench tests. Read the Hardware manual 50 11 times over and over.
Last chance before I have fun with a torch.
Here it goes...
ECU: MS2 V3.0
Firmware: MS2/Extra 3.4.3 release 20191126 15:29BST(c)KC/JSM/JB
Ign Outputs: Wasted Spark COP/CNP, LS2 coils. Board designed using Logic spark outputs D14, D15, D16, and JS11 (pull up resistor).
Stock 60-2 VR missing tooth on crank.
Board setup per manual: Jumper VRIN to TACHSELECT, VrOUT to TSEL, D1 is just jumpered (no diode) same for D2. IGN to JS10 (tacho output), JS9 to S12C, J
Tunerstudio settings: Falling Edge, Going Low, wasted COP, Spark A output D14.
ECU turns on and connects to tunerstudio. Test mode fires off the fuel pumps and all injectors as well.
The problem: During test mode, Coil outputs A,B, and C all fire a coil (using a single confirmed working coil for each test just swapping connectors). Output D does not fire at all. All pins in the connectors receive power, ground, and sensor ground. The logic pin has been tested for open circuitry from the connector to the ECU proto board and all have continuity (nothing open).
Where should I even begin to further troubleshoot?
Last chance before I have fun with a torch.
Here it goes...
ECU: MS2 V3.0
Firmware: MS2/Extra 3.4.3 release 20191126 15:29BST(c)KC/JSM/JB
Ign Outputs: Wasted Spark COP/CNP, LS2 coils. Board designed using Logic spark outputs D14, D15, D16, and JS11 (pull up resistor).
Stock 60-2 VR missing tooth on crank.
Board setup per manual: Jumper VRIN to TACHSELECT, VrOUT to TSEL, D1 is just jumpered (no diode) same for D2. IGN to JS10 (tacho output), JS9 to S12C, J
Tunerstudio settings: Falling Edge, Going Low, wasted COP, Spark A output D14.
ECU turns on and connects to tunerstudio. Test mode fires off the fuel pumps and all injectors as well.
The problem: During test mode, Coil outputs A,B, and C all fire a coil (using a single confirmed working coil for each test just swapping connectors). Output D does not fire at all. All pins in the connectors receive power, ground, and sensor ground. The logic pin has been tested for open circuitry from the connector to the ECU proto board and all have continuity (nothing open).
Where should I even begin to further troubleshoot?
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