Pinpoint Test N: DTC B109E:51

Handles, Locks, Latches and Entry Systems - Integrated Keyhead Transmitter (IKT)







Pinpoint Tests

Pinpoint Test N: DTC B109E:51

Normal Operation

When an Integrated Keyhead Transmitter (IKT) key is programmed, the Remote Keyless Entry (RKE) Transmitter Identification Code (TIC) data from the key is received by the Instrument Panel Cluster (IPC). The IPC then sends the TIC data to the Smart Junction Box (SJB) over the Medium Speed Controller Area Network (MS-CAN). The SJB stores the TIC data in memory and sends an acknowledgement back to the IPC that the TIC data was successfully programmed.

- DTC B109E:51 (Remote Keyless Entry: Not Programmed) - a continuous DTC that sets when the IPC sends the RKE TIC data to the SJB over the MS-CAN, and it does not receive a response from the SJB that the TIC data has been stored.

This pinpoint test is intended to diagnose the following:

- IKT programming
- MS-CAN
- SJB



PINPOINT TEST N: DTC B109E:51

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N1 CHECK FOR THE CORRECT RKE TRANSMITTERS


- 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.
- Check that the correct IKTs are used with the vehicle. Compare the IKTs with the one shown in Handles, Locks, Latches and Entry Systems Description and Operation in the Description and Operation.
- Are all the correct IKTs present?

Yes
GO to N2.

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.

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N2 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 Information Bus.

No
GO to N3.

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N3 REPROGRAM THE IKTs


- Erase and program all of the IKTs using the scan tool method. Refer to
Integrated Keyhead Transmitter (IKT) Key Programming Using Diagnostic Equipment in Antitheft and Alarm Systems. Integrated Keyhead Transmitter (IKT)
- Erase all IPC DTCs.
- Cycle the key to OFF, and then to the RUN position.
- Enter the following diagnostic mode on the scan tool: IPC Self-Test .
- Is DTC B109E:51 retrieved again?

Yes
GO to N5.

No
GO to N4.

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N4 CHECK THE OPERATION OF THE RKE TRANSMITTER


- Press any button on the inoperative IKT.
- Does the RKE transmitter operate?

Yes
The system is operating normally. The concern may have been caused by an incorrectly programmed IKT.

No
GO to Pinpoint Test L. Pinpoint Test L: The Remote Keyless Entry (RKE) Transmitter Is Inoperative

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N5 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 Body Control Systems. 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.

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