Test A: the Retractable Running Board Does Not Operate Correctly - Both Running Boards

PINPOINT TEST A: THE RETRACTABLE RUNNING BOARD DOES NOT OPERATE CORRECTLY - BOTH RUNNING BOARDS

A1-A4:

A5-A7:

A7-A9:

A9-A11:

Normal Operation
The power running board (PRB) module receives power through circuit SBB19 (BU/RD) and ground through circuit GD151 (BK/GN). The LH and RH PRB motor Hall-effect sensors receive a regulated 10-volt power supply from the PRB module through circuit CPR47 (GY/BN). The Hall-effect ground is provided by the PRB module through circuit RPR47 (BU/GN). The PRB module receives door ajar and vehicle speed status over the controller area network (CAN).

Possible Causes
- Fuse
- Open in circuit CPR47 (GY/BN), RPR47 (BU/GN), GD151 (BK/GN) or SBB19 (BU/RD)
- Short to battery in circuit CPR47 (GY/BN)
- Short to ground in circuit CPR47 (GY/BN)
- PRB module
- Smart junction box (SJB)

NOTE: If any door ajar or VSS-related DTCs are present, diagnose the door ajar and VSS-related DTCs before performing this pinpoint test.