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Here's where I'm at: 97 camaro 3.8 K
Starter is working, cranks engine fine.
Fuel pump relay is not receiving a signal from the PCM. The relay and pump have already been tested and work properly.
Ignition is not functioning, with fuel pump enabled (shorted relay contacts) I get gas smell from the exhaust (expected) when cranking.
The security light comes on for a second, but goes back out. I have a resistor bypass in place. This would seem to rule out the BCM unless the 50hz enable signal is not present. I'm not sure if the signal is required for the starter to engage, but I believe it is. Since the starter is working...
I'm troubleshooting the ignition next, see if I have any spark etc.
Does anyone have any experience with this specific kind of malfunction?
Bad PCM/ECU is my first guess, anything I missed/should check before replacing it? I have the full service manual and wiring diagrams for reference if needed.
Starter is working, cranks engine fine.
Fuel pump relay is not receiving a signal from the PCM. The relay and pump have already been tested and work properly.
Ignition is not functioning, with fuel pump enabled (shorted relay contacts) I get gas smell from the exhaust (expected) when cranking.
The security light comes on for a second, but goes back out. I have a resistor bypass in place. This would seem to rule out the BCM unless the 50hz enable signal is not present. I'm not sure if the signal is required for the starter to engage, but I believe it is. Since the starter is working...
I'm troubleshooting the ignition next, see if I have any spark etc.
Does anyone have any experience with this specific kind of malfunction?
Bad PCM/ECU is my first guess, anything I missed/should check before replacing it? I have the full service manual and wiring diagrams for reference if needed.
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