1985-1998 [Subscribe to Daily Digest] |
I didn't intend lose you. Bottom line, your BPC is shorted through one of the coils (coil - electrical component that when energized with voltage/current creates a magnetic field, this magnetic field is used to attract/pull a metallic device toward itself in a switching action). It is likely that if the coil is shorted, it has damaged the ECU. The ECU would be damaged due to an excessive current draw on the waveform circuit. This current draw was caused by the shorted coil. Image your household faucet. As you turn the valve open, more water flows. In electricity, resistance to current flow measured in Ohms, is the same as the water valve. If there is no resistance or 0 Ohms, the current will flow freely. When this happens, components like wires, resistors, diodes, etc overheat and burn up. This is why DaveW points out possible resistor replacement in the ECU. If there was an excessive current draw on the circuit, the output resistor may have burned up creating an open circuit (i.e. no more signal). You would have to replace the resistor with another of the same value.
You might want to double check the Ohm readings of the BPC to make sure that you weren't accidentally touching the Ohmmeter leads together (those pins are pretty close). If still showing 0 Ohms, do as DaveW said with the resistor.
You can go to Radio Shack and pick up a 3 Ohm 10 Watt resistor or if you can't find a 3 Ohm resistor, get 3 part number 271-131 1 Ohm 10 Watt resistors and wire them in series as shown at the bottom of this message where RRRR is the resistor body and ---- are the leads with ends 1 and 2. Once you have them together tape them up with electrical tape leaving only ends 1 and 2 exposed (leave end 2 exposed enough to get your meter lead onto it after it is fully inserted into the BPC cable connector) then measure Ohms with your meter between ends 1 and 2. You should get 3 Ohms. If not, you have done something wrong. Try again and measure again. If all is well, insert end 1 into socket 2 on the BPC cable and end 2 into socket 3. Turn the car on. With the Black meter lead on any chassis ground and the red lead on end 2 of the resistor, you should be able to measure a DC voltage of some kind with your multimeter. If you have an O'scope it would be better, but I don't expect that you have one lying around. If you measure a voltage, you're ECU is probably OK, go get a BPC. If not, you'll need to go shopping for an ECU and BPC.
1----RRRR-----RRRR-----RRRR----2
These are just suggestions. I'm by no means an expert, but just a guy like you trying to share what I know or think I know to hopefully help others. Feel free to email me as I have included it in this message and perhaps we can chat real-time with MSN or AOL IM.
posted by 68.83.34...
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
 |
 |
 |
 |
 |
