DTC Troubleshooting: B2840-13

DTC B2840-13: SRS Unit Connector A Not Properly Installed

NOTE:

	Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components of the correct part number and were properly installed.
	Before doing this troubleshooting procedure, review SRS Precautions and Procedures, General Troubleshooting Information, and 12 Volt Battery Terminal Disconnection and Reconnection.
	Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS unit software, and retest.

DTC Description	DTC
B2840-13 SRS unit connector A not properly installed

Problem verification:

Problem verification

?1.	Clear the DTCs with the HDS.

?2.	Turn the vehicle to the ON mode, then wait for 10 seconds.

?3.

Check for DTCs with the HDS.

DTC Description	DTC
B2840-13 SRS unit connector A not properly installed

Is DTC B2840-13 indicated?


	YES

The failure is duplicated. Go to step 2.


	NO

Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.?

Connector connection check:

Connector connection check

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.

Check the following connection.

SRS unit connector A (39P)

Is the connector OK?


	YES

Go to step 4.


	NO

Go to step 3.

System check:

System check

?1.	Reset the loose connections that caused the problem in step 2.

?2.	Clear the DTCs with the HDS.

?3.	Turn the vehicle to the ON mode, then wait for 10 seconds.

?4.

Check for DTCs with the HDS.

DTC Description	DTC
B2840-13 SRS unit connector A not properly installed

Is DTC B2840-13 indicated?


	YES

Go to step 4.


	NO

The system is OK at this time.?

SRS unit check:

SRS unit check

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.	Disconnect the negative cable from the 12 volt battery, then wait at least 3 minutes.

?3.

Disconnect the following connector.

SRS unit connector A (39P)

?4.	Check for bent or damaged terminals on the SRS unit.

Are any terminals bent or damaged?


	YES

Replace the SRS unit.?


	NO

Replace the dashboard wire harness, then clear the DTC.?