Test A: The Power Running Board (PRB) Does Not Operate Correctly - Both Running Boards

PINPOINT TEST A: THE POWER RUNNING BOARD (PRB) DOES NOT OPERATE CORRECTLY - BOTH RUNNING BOARDS

Normal Operation
The power running board (PRB) module receives power through circuit SBB07 (WH/RD) and ground through circuit GD143 (BK/VT). 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).

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- PRB module
- Smart junction box (SJB)

NOTE: If any door ajar or vehicle speed sensor (VSS)-related DTCs are present, diagnose the door ajar and VSS-related DTCs before carrying out this pinpoint test.

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A3-A5:

A6-A7:

A8-A10:

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