I'm trying to troubleshoot a malfunctioning MIL light (it is stuck "always on"). I've got a K-Pro mated to a CTR ECU, which is interfaced to a JRSC'd K20A. My current (factory) ECU documentation says the following:
Pin E1: IMO FPR (IMMOBILIZER FUEL PUMP RELAY)
Desc: Drives PGM-FI main relay 2
Behavior: 0V for 2 seconds after turning ignition switch ON (II), then battery voltage
Pin E31: MIL (MALFUNCTION INDICATOR LAMP)
Desc: Drives MIL
Behavior: With MIL turned ON: about 0V; With MIL turned OFF: battery voltage
Currently, both of those pins measure 0V (GND), regardless of whether the ignition is off, just-on, has been on for >1 minute, or whether the engine is running or not. The engine otherwise seems to run just fine. With the ignition off, a multimeter shows about 2kOhm of resistance between either E1 or E31, and ground.
My question is this: what is the expected behavior of pins E1 and E31 with the K-Pro attached? The K-Pro user guide makes a mention that the MIL light (E31) should be "on" (E31 = 0V) for 2 seconds after switching the ignition to "on", and "off" (E31 = battery V) thereafter. Datalogging shows that the MIL should be "off", yet E31 remains at 0V. For pin E1, the factory docs say it should do the same thing - 0V for 2 seconds, then battery V thereafter. It, too, remains at 0V. I have the immobilizer disabled in the K-Manager "Misc" parameters tab, if that makes a difference. Does the K-Pro change the behavior of E1?
Any and all assistance that can be offered is highly appreciated!
