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Diagnostic trouble code generation, reading diagnostic trouble codes with the diagnostics instrument

Diagnostic trouble code generation, reading diagnostic trouble codes with the diagnostics instrument


The control module sends trouble code and fault status information to the diagnostics instrument. The diagnostics instrument then presents a response, depending on the status of the fault. The earlier example with shifting solenoid S1 permanently short-circuited to ground entails the following: • If the fault is present right now, diagnostic trouble code P1852 will be assigned the prefix P and the diagnostics instrument display will show FAULT 01 P P1852 SOLENOID 1-2/3-4 SHORTING TO GROUND • If the fault has occurred previously but is not present right now, diagnostic trouble code P1852 will be assigned the prefix I and the diagnostics instrument display will show FAULT 01 I P1852 SOLENOID 1-2/3-4 SHORTING TO GROUND