B13B7 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B13B7 – Second Row Right Inflatable Seatbelt Deployment Control Circuit

 

B13B7 Possible Symptoms

 

Air Bag Warning Light ON

 

B13B7 Possible Causes

 

Faulty Second Row Right Inflatable Seatbelt,Second Row Right Inflatable Seatbelt harness is open or shorted,Second Row Right Inflatable Seatbelt circuit poor electrical connection,Faulty Restraints Control Module (RCM)

 

B13B7 Description

 

The Restraints Control Module (RCM) analyzes the deployment loop resistance to determine if a fault exists. The value displayed in the Parameter Identification (PID) is the deployment loop resistance measured by the Restraints Control Module (RCM). If the value displayed is lower or higher than the desired range, the Restraints Control Module (RCM) can set a Diagnostic Trouble Code (DTC). As the deployment loop resistance drifts farther outside the desired range, the chance for a Diagnostic Trouble Code (DTC) increases. Small variations in resistance can occur due to the effect of road vibrations on terminal fit. Crimps and terminals can be affected by stress and harness movement and can cause an increase in resistance due to wire strain. These variables can result in an intermittent fault. For this reason, the test requires the Parameter Identification (PID) value to be within the desired range before the fault is considered repaired, regardless if the module is reporting an on-demand Diagnostic Trouble Code (DTC) at the time of diagnosis. Following this direction helps make sure that minor changes in resistance do not create a repeat concern.