🔧Infiniti G35 Transmission Repair: P1757 Code Fix - RE5R05A - P1757 Front Brake Solenoid Circuit

P1757 Front Brake Solenoid Circuit. On this video I show how this trouble code can be fixed if this is the issue that is going on with the vehicle. Keep in mind that if your Transmission is contaminated with coolant this will not be the issue. The whole Transmission need to be Rebuild if contaminated. Hope you like field trips, enjoy the video. *Infiniti G35 Transmission Repair - P1757 Front Brake Solenoid Circuit* This document summarizes the process of diagnosing and repairing a 2006-2007 Infiniti G35 Coupe experiencing transmission issues related to a P1757 "Front Brake Solenoid Circuit" fault. The repair, documented in a video, demonstrates a hands-on approach to troubleshooting the problem. The presenter, "Ham," guides viewers through diagnosing the code, disassembling the valve body, and identifying a broken pin on the front brake solenoid connector. The video highlights practical repair techniques such as soldering and testing. *Problem:* The Infiniti G35 Coupe would shift properly through the first few gears but go into neutral and "fail-safe mode" when attempting to shift into fifth gear. This issue would persist until the vehicle was restarted. The initial scan revealed a "P1757 Front Brake Solenoid Circuit" fault code. The P1757 code specifically points to a fault in the front brake solenoid circuit of the RE5R05A transmission. *Initial Diagnosis & History:* *P1757 Code:* Indicates a problem with the front brake solenoid circuit. *Previous Work:* The vehicle had been previously serviced, and the solenoid was replaced before reaching this shop. The transmission fluid was not contaminated. *Disassembly and Inspection:* *Transmission Type:* RE5R05A model. *Valve Body Removal:* The technician removed the transmission pan, valve body, TCM (Transmission Control Module), filter, and solenoid. *Component Check:* The disassembly included disconnecting the speed sensor and pass-through connector. *Solenoid Inspection:* The front brake solenoid was removed and checked for contamination. Coolant contamination was ruled out. *TCM Removal:* The Transmission Control Module was removed from the valve body. *Root Cause: Broken Pin* *Continuity Test:* Using an ohmmeter, a "wiggle test" was performed on the solenoid connector pins. *Crack Detection:* A broken pin was found on the solenoid connector, specifically where it attaches to the board. *Repair Method:* *Soldering:* The broken pin was repaired by soldering a small wire to reinforce it. *Flux:* Flux was used for better solder adhesion. *Soldering Technique:* The wire and connector were tinned for a robust connection. *Post Repair Inspection:* The connection was inspected to ensure no pins were touching each other. *Reassembly and Testing:* *Reassembly:* Components were reassembled, including the filter, TCM, valve body, and transmission pan. *Fluid Refill:* The transmission was refilled with the same fluid. *Code Clearing:* The P1757 code was cleared using a scan tool. *Road Test:* A road test was conducted. *Live Data:* The scan tool monitored the front brake solenoid amperage. The amperage changed as the solenoid engaged, allowing the shift into fifth gear. Previously, it remained constant, triggering fail-safe mode. *Key Takeaways:* The P1757 code was caused by a broken connection pin on the solenoid, not the solenoid itself. Soldering and wire reinforcement was a practical repair. A "wiggle test" is a key diagnostic process. The broken pin connection is a very common problem. A scan tool is needed to clear fault codes and to monitor live data. *Conclusion:* The P1757 transmission code was successfully repaired using a methodical approach, accurate identification of the broken pin, a skillful repair, and confirmation via scan tool and road test. Keywords: Infiniti G35, P1757, transmission repair, front brake solenoid, RE5R05A, soldering, wiggle test, TCM, valve body, scan tool, #InfinitiG35, #P1757, #TransmissionRepair, #FrontBrakeSolenoid, #RE5R05A, #Soldering, #WiggleTest, #TCM, #ValveBody, #ScanTool