B1638 CHRYSLER, DODGE, JEEP, RAM: RIGHT HIGH BEAM CONTROL CIRCUIT HIGH
POST UPDATED IN February, 2023
B1638 CHRYSLER, DODGE, JEEP, RAM: RIGHT HIGH BEAM CONTROL CIRCUIT HIGH
The Fully Integrated Power Module (TIPM) works as a smart fuse box, which controls a big part of the car’s electrical system. Basically, this module takes the commands sent by other controllers and switches and sends them in a voltage signal as required.
Generally, the TIPM is installed in the engine compartment close to the battery. It connects directly to the B+ cable via a bolt-on top of the module. It also receives a ground signal through several electrical connectors. There is a variety of internal relays inside this controller, a microprocessor, and fuses that execute commands sent by the FCM.
The DTC B1638 OBD2 for some brands (Chrysler, Dodge, Jeep, RAM) is related to a problem with the right high beam. This is set when the fully integrated Power Module in that circuit has voltages that exceed the allowable threshold.
OBDII diagnostic code B1638 is set for the following reasons:
To troubleshoot the B1638 OBD2 fault code, try this: