Mar 1, 2003 This will work for usdm OBD-1 ECUs: Read the code on it. The 2nd to last # on an automatic ECU will have a 5. If it is anything but a five then it is a manual ECU. Jdm OBD-1 ECUs: Read the code on it.. if the last 3 digits are 900 or 901 it is an automatic ECU. Click to expand...
This will work for usdm OBD-1 ECUs: Read the code on it. The 2nd to last # on an automatic ECU will have a 5. If it is anything but a five then it is a manual ECU. Jdm OBD-1 ECUs: Read the code on it.. if the last 3 digits are 900 or 901 it is an automatic ECU.
