More jeep cobloke
che problems, what voltage should be at the wires connecting to the ignition control module?
I tested the ignition switch, and its getting power in start and run. when i look at the ignition control modual, their are 2 harnesses going into it, one with 3 prongs one with 2. both have yellow wires. the 2 pronds has one yellow wire, and nothing in the other prong, and in start and run that gets around 5.1 volts. in the 3 wire harness the other yellow wire gets 12 volts. is this a clue as to whats wrong? one yellow wire comes from the ecu, one comes from the switch. basically what im asking is does the ecu put out 12 volts normally? is this 5.1 reading a problem? the schematics show one coming from the keyswitch and one frmo the ecu, but its impossible to tell which is which. if anyone has any insight it would be helpful, thankyou.its a 1988 jeep comanche 4x4 with the 4.0 strait six. it starts up and dies. however if you hold the keyswitch in the on position it continues to run.