B2100 CHRYSLER, DODGE, JEEP, RAM: IGNITION RUN/START INPUT CIRCUIT PERFORMANCE
POST UPDATED IN June, 2023
B2100 CHRYSLER, DODGE, JEEP, RAM: IGNITION RUN/START INPUT CIRCUIT PERFORMANCE
Internal combustion engines cannot start on their own. For vehicle engines (both diesel and gasoline), an electric motor known as a starter motor is used. The battery provides voltage to this motor once the driver turns the ignition switch or key. This action makes a gear in the starter motor cause the crankshaft to rotate.
A typical starting circuit includes the battery, starter motor, an activation system, ignition switch, starter solenoid or relay, wiring. For automatic transmission applications, a neutral safety switch is also included. The starting system of an automobile has two circuits: one that supplies power to the engine and the other that controls the starter. Although both are independent, they work together.
The Front Control Module monitors the ignition run/start input circuit. In case this controller detects that the CAN bus message and the wired ignition circuit do not match, it will set the B2100 OBD2 diagnostic code.
The reasons for storing the B2100 OBDII fault code are:
The steps to follow to correct the DTC B2100 OBD2 code are: