Expedition 2WD V8-5.4L (2009)
-
pushed-out pins
-
Connect all the DCSM 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 DCSM. REPOWER the SRS. REFER to Air Bag Systems. CLEAR the DTCs. REPEAT the network test with the scan tool.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. REPOWER the SRS. REFER to Air
Bag Systems. CLEAR the DTCs. REPEAT the network test with the scan tool.
-------------------------------------------------
Pinpoint Test R: The Power Running Board (PRB) Module Does Not Respond To The Scan Tool
Communications Network
Pinpoint Tests
Pinpoint Test R: The Power Running Board (PRB) Module Does Not Respond To The Scan Tool
Refer to Wiring Diagram Set 14, Module Communications Network for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Refer to Wiring Diagram Set 109, Power Liftgate/Retractable Running Boards for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Normal Operation
The Power Running Board (PRB) module communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN). Circuits
VDB06 (GY/OG) (MS-CAN +) and VDB07 (VT/OG) (MS-CAN -) provide the network connection to the PRB module. Voltage for the PRB module is
provided by circuit SBB11 (BU/RD). Circuit GD143 (BK/VT) provides ground.
This pinpoint test is intended to diagnose the following:
-
Fuse
-
Wiring, terminals or connectors
-
PRB module
PINPOINT TEST R: THE PRB MODULE DOES NOT RESPOND TO THE SCAN TOOL
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the
connector.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
-------------------------------------------------
R1 CHECK THE PRB MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
-
Ignition OFF.
-
Disconnect: PRB Module C3313b.
-
Ignition ON.
-
Measure the voltage between the PRB module C3313b-1, circuit SBB11 (BU/RD), harness side and ground.
-
Is the voltage greater than 10 volts?
