rockola1971
Full Access Member
Terminal Pinout Ignition Coil
86 (Relay coil +)
85 (relay coil -)
30 Power source for load
87 Device (load)
Firstly your 11.5v readings should be well above 12v, along the lines of 12.6v + so charge that battery. Low battery could cause your ignition relay to chatter. Terminals 85 and 87 will read 0v since terminal 85 is ground and 87 because you are holding the relay in your hand which passes 12v to it when relay is energized closed. So do a resistance measurement to ground from terminal 85 to verify it has a good ground. Once battery is charged up, test PCM1 fuse for 12v with someone cranking engine over. If good then you could have a broken wire between fuse block PCM1 and PCM C1 Plug or you could have something going on at the PCM C1 plug at the PCM terminal 19 Pink Wire. Inspect for rodent damage, corrosion or pushed/broken/corroded terminal within C1 plug.
86 (Relay coil +)
85 (relay coil -)
30 Power source for load
87 Device (load)
Firstly your 11.5v readings should be well above 12v, along the lines of 12.6v + so charge that battery. Low battery could cause your ignition relay to chatter. Terminals 85 and 87 will read 0v since terminal 85 is ground and 87 because you are holding the relay in your hand which passes 12v to it when relay is energized closed. So do a resistance measurement to ground from terminal 85 to verify it has a good ground. Once battery is charged up, test PCM1 fuse for 12v with someone cranking engine over. If good then you could have a broken wire between fuse block PCM1 and PCM C1 Plug or you could have something going on at the PCM C1 plug at the PCM terminal 19 Pink Wire. Inspect for rodent damage, corrosion or pushed/broken/corroded terminal within C1 plug.
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