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The code C1201 is vague and meaning that the ECU is getting some error data via the system bus BEAN. You need to find the root cause of it reading behind the C1201. In order to do it, you need to use a good scan tool which is capable to read more.
The scanner I used is Snap on Solus, I think that’s a pretty good one it costed me couple G.
whats weird was that even though the part number matches exactly with those in car, once you swab them, these weird things start to happen. And then reversal back to put back what came out back in car won’t see to solve these issues.
all these were performed with battery disconnected.
hmmm, I hope I did not have to change out ECM next
The scanner I used is Snap on Solus, I think that’s a pretty good one it costed me couple G.
whats weird was that even though the part number matches exactly with those in car, once you swab them, these weird things start to happen. And then reversal back to put back what came out back in car won’t see to solve these issues.
all these were performed with battery disconnected.
hmmm, I hope I did not have to change out ECM next
So you only get the code C1201 using the Snapon Solus. That fact leads me to think about the bus connection issue. See the chart below. The left side is the ABS/TRC computer. Those 5 lines are connected to the ECU. I worry that one of these are not properly connected. There may be a possibility that the connector C is damaged or one of wires is not connected. I advise you to check the continuity of these lines. If one of 5 lines or more is not connected, you will have only P1201 code whatever you use the original computer or the junk yard one.
So you only get the code C1201 using the Snapon Solus. That fact leads me to think about the bus connection issue. See the chart below. The left side is the ABS/TRC computer. Those 5 lines are connected to the ECU. I worry that one of these are not properly connected. There may be a possibility that the connector C is damaged or one of wires is not connected. I advise you to check the continuity of these lines. If one of 5 lines or more is not connected, you will have only P1201 code whatever you use the original computer or the junk yard one.
this is what I have in picture, all wire seem intact, all connection seem secure this is where the Body module sit behind foot brake on driver side these shows connection to asb vsc module with blk connectors and to ecm in whote connectors all wore seem intact and in good conditon
those in the pictures are not the ones I bought from junk yard, those are the original parts from this vehicle, as u can see I returned everything back to where it came from after I junk parts started the boo boo
So you only get the code C1201 using the Snapon Solus. That fact leads me to think about the bus connection issue. See the chart below. The left side is the ABS/TRC computer. Those 5 lines are connected to the ECU. I worry that one of these are not properly connected. There may be a possibility that the connector C is damaged or one of wires is not connected. I advise you to check the continuity of these lines. If one of 5 lines or more is not connected, you will have only P1201 code whatever you use the original computer or the junk yard one.
Originally Posted by Yamae
This drawing may help you to check. コネクターC is the connector C.
03-04-21, 06:23 PM
