B1640 CHRYSLER, DODGE, JEEP, RAM: FRONT RIGHT TURN CONTROL CIRCUIT HIGH
POST UPDATED IN January, 2023
B1640 CHRYSLER, DODGE, JEEP, RAM: FRONT RIGHT TURN CONTROL CIRCUIT HIGH
The Body Control Module (BCM) gets a message from the SCCM (Steering Column Control Module) communication network to request the illumination of the turn signal light. Once the bus gets this message, the pulsed voltage output is supplied by the BCM via the front turn signal control circuit.
The front turn control circuit is connected to the dual filament turn signal and parking lamp. The turn and park signal filaments use the same ground circuit in a dual filament lamp.
When the B1640 OBD2 fault code B1640 is set, it means that the front swing control circuit has experienced an open circuit.
Reasons why the B1640 OBDII diagnostic code is set:
To troubleshoot DTC B1640 OBD2, try this: