V3 Inj1 + 2 stuck

[Space387]

I am trying to use injector 1 and 2 for the 2 cooling fands on my LT1 and I have noticed they seem to be unresponsive. The actual injectors are running off the 3x board and I have used just about all my switching grounds for other relays. The 2 circuits would be perfect because the 2 fans are on a low speed high speed 3 relay system so probably more current than the spare spark outs are capable of. No matter what I do or the settings injector 1 is always off and injector 2 is always on. Is there some where to test on the V3 board to see what I have overlooked.

[jsmcortina]

How are you testing them?

James

[Space387]

12v to an led anode, cathode side to the ms pins. I have tried changing the settings to less than the clt sensor is reading and attempted using the io test page also with no change

[grom_e30]

have you tried test mode?

[Space387]

Yes even through test mode there is no change.

[Space387]

I have tested the fans and if I ground either or both trigger wires the fans kick on but when connected to ms fan 2 dose not shut off and fan one will not come on regardless of the settings or the use of test mode

[billr]

Post the schematic of wiring from MS to fans. It doesn't have to be pretty, just a sketch will be OK, but make it complete, grounds, relays, everything.

[Space387]

The system I have is from the lower diagram. The connection of A11 is routed to pins 32 and 33(db37) , A10 is connected to pin 34 and 35(db37) and all the grounds for MS are routed to the chassis like the ones shown on the diagram. The car is still using a stock wiring harness and as I said it turns on the appropriate fan if I ground the trigger pins strait to the chassis or battery.