Pinpoint Test R: DTC B1137

Locks, Latches and Entry Systems

Pinpoint Tests

Pinpoint Test R: DTC B1137

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 Cluster (IC). The IC 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 IC that the TIC data was successfully programmed.

- DTC B1137 (Data Not Programmed) - a continuous DTC that sets when the IC 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 R: DTC B1137

-------------------------------------------------
R1 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.
- 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 IC AND SJB


- Enter the following diagnostic mode on the scan tool: Network Test.
- Does the IC or SJB fail the network test?

Yes
REFER to Information Bus.

No
GO to R3.

-------------------------------------------------
R3 REPROGRAM THE IKT KEYS


- Erase and program all of the IKT keys using the scan tool method. Refer to Antitheft and Alarm Systems.
- Erase all IC DTCs.
- Enter the following diagnostic mode on the scan tool: IC Self-Test.
- Is DTC B1137 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. Pinpoint Test L: The Remote Keyless Entry (RKE) Transmitter Is Inoperative

-------------------------------------------------
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 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.

-------------------------------------------------