Pinpoint Test R: DTC B109E:51

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

R1 CHECK FOR THE CORRECT RKE TRANSMITTERS
- Check that the correct IKTs are used with the vehicle.
  NOTE: Make sure the IKTs are those provided with the OEM system and not from an aftermarket system, or a dealer-installed system that may have been installed on the vehicle.
- Are all the correct IKTs present?

Yes: GO to R2.
No: The system cannot be tested without the correct IKTs . INFORM the customer that all the correct IKTs must be present to proceed with diagnosis of the system.

R2 CHECK FOR COMMUNICATION WITH THE IPC AND SJB
- Enter the following diagnostic mode on the scan tool: Network Test.
- Does the IPC or SJB fail the network test?

Yes: REFER to INSPECTION AND VERIFICATION .
No: GO to R3.

R3 REPROGRAM THE IKT KEYS
- Erase and program all of the IKT keys using the scan tool method. Refer to ANTI-THEFT .
- Erase all IPC DTCs.
- Enter the following diagnostic mode on the scan tool: IPC Self-Test.
- Is DTC B109E:51 retrieved again?

Yes: GO to R5.
No: GO to R4.

R4 CHECK THE OPERATION OF THE RKE TRANSMITTER
- Press any button on the suspect IKT key.
- Does the RKE transmitter operate?

Yes: The system is operating normally. The concern may have been caused by an improperly programmed IKT key.
No: Go To PINPOINT TEST L .

R5 CHECK FOR CORRECT SJB OPERATION
- Disconnect all the SJB connectors.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect all the SJB connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?

Yes: INSTALL a new SJB . REFER to INSTALLATION . TEST the system for normal operation.
No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.