Navigator 4WD V8-5.4L (2010)
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Disconnect all the PRB module connectors.
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Check for:
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corrosion
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damaged pins
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pushed-out pins
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Connect all the PRB module connectors and make sure they seat correctly.
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Operate the system and verify the concern is still present.
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Is the concern still present?
Yes
INSTALL a new PRB module. REFER to Auxiliary Step / Running Board. 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.
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Pinpoint Test S: The Parking Aid Module (PAM) Does Not Respond To The Scan Tool
Communications Network
Pinpoint Tests
Pinpoint Test S: The Parking Aid Module (PAM) 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 131, Parking Aid for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams By Number
Normal Operation
The Parking Aid Module (PAM) communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN).
This pinpoint test is intended to diagnose the following:
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Fuse
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Wiring, terminals or connectors
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PAM
PINPOINT TEST S: THE PAM 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.
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S1 CHECK THE PAM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
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Ignition OFF.
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Disconnect: PAM C4226 (Expedition) or PAM C4014a (Navigator).
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Ignition ON.
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For Expedition, measure the voltage between the PAM C4226-18, circuit CBP35 (YE/GY), harness side and ground.
