CRANKSHAFT GP 3712477 - Caterpillar

Step 1. CHECK RF MODEM BAUD RATECheck to see if the RF modem interface is set to communication at the correct baud rate.Expected Result:Baut rate is set correctly.Results:
OK - Baud rate is set correctly. Proceed to Test Step2
NOT OK - Check manuals and set baud rate to correct settings.STOPTest Step 2. CHECK RF MODEM INTERFACECheck modem interface with a compatible computer or other device that is known to be good.Expected Result:Modem inteface works correctly.Results:
OK - Modem interface works correctly. Proceed to Test Step3
NOT OK - Check manuals to set interface to work correctly.STOPTest Step 3. CHECK CONTINUITY OF WIRESCheck continuity of wires between the user-supplied device to the data communication port.Expected Result:Continuity in wires exists.Results:
OK - Continuity in wires exists. Proceed to Test Step
NOT OK - If continuity does not exist replace wires.STOPTest Step 4. CHECK FOR CONTINUITY BETWEEN SOCKET B AND PMC SOCKET 5With the key switch OFF, disconnect the PMC check for continuity from the data communication port connector socket B to the PMC harness connector socket 5.Expected Result:Continuity