Categories: Auto Repair

BMW PDC System Module System 9E3B Trouble Repair

This post show you the experience on how to repair BMW PDC system trouble.More repair cases about BMW,please check here:BMW Trouble Repair

 

Symptoms:

When hang reverse gear,PDC switch light flashing and the console show the PDC system error as below.

 

Diagnostics:

Connect ICOM and run with ISTA-D get the trouble code 9E3B Power Supply sensor park assistense.

 

According to the diagram,all parking sensors supply from one power supply together.If one of the parking sensor short circuit,the voltage will be reduced to 2.7V.Mechanic test and replace the broken sensor with new one,but the voltage still show 2.7V,so it seem the PDC module was damaged.

 

Disassemble the PDC module,and take out the PCB to check.Mechanic found the 5WC power triode was damaged.

 

After solder a new working power triode to PDC module PDC,the trouble was solved!

Install all parts back on car,tested PDC system work well.

auto

Recent Posts

How to Solve AGCO Machine Oil Pressure Sensor Defect High and Low

Here is the instruction show you guide on how to solve AGCO machine trouble code…

2 days ago

Magneti Marelli 4CFR Ford and KIA ECM Pinout

Vehicles: Eco Esporte, Fiesta and Ka.   More ECU PINOUT Components: ECU Modules Repair Pinpout…

5 days ago

2025 Wabco TEBS-E 7.20 6.50 6.02 Diagnostic Software EBS ABS Free Download

Wabco software is designed to facilitate the configuration of the Trailer EBS – ABS Braking…

1 week ago

HINO J05E Engine Water Pump Removing Guide

This instruction show you guide on how to remove and install water pump for HINO…

1 week ago

How to Use JPRO 2025 V3 Diagnostic Software to Perform CTIS Pressure Test

JPRO 2025V3 CTIS Pressure test allow you to measure the pressure of a selected axle group…

2 weeks ago

How to Solve PCC2300 PowerCommand HMI Screen Does Not Wake Up

This instruction show you guide on how to solve PCC2300 Powercommand HMI screen does not…

2 weeks ago