Engine Entry and Start Clearance Control System Fault Diagnosis and Troubleshooting
The keyless entry system of a 2016 car of a certain brand fails to function and the engine cannot be started.According to the fault phenomenon,combined with the relevant circuit diagram analysis of the entry and start permit control system of this model,Test and diagnose the related pins of the J518 entry and start permit control unit,the T73A plug of J519,the start relay J907,the start signal provided by J764,the plug problem of J764 and the J764 control unit,and gradually reduce the fault range.Precisely locate the fault point is the patina on terminal 47 of the T73A plug of J519 and terminal 12 of the J764 plug.Clean the patina on the terminal,in-stall the accessories,and restart the test,the keyless entry system function is restored,and the engine can start normally.
Keyless entry system function failureEngine startPlugPatina
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