Mariner 2WD L4-2.5L (2009)
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Are the resistances less than 5 ohms?
Yes
CONNECT the negative battery cable. GO to F4.
No
REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
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F4 CHECK FOR CORRECT OCSM OPERATION
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Disconnect the OCSM connector.
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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 the OCSM connector and make sure it seats 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 OCSM. 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. CLEAR the DTCs. REPEAT the
network test with the scan tool.
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Pinpoint Test G: The Power Steering Control Module (PSCM) Does Not Respond To The Scan Tool
Communications Network
Pinpoint Tests
Pinpoint Test G: The Power Steering Control Module (PSCM) Does Not Respond To The Scan Tool
Refer to Wiring Diagram Set 14 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Module Communications Network for schematic and connector
information. See: Diagrams/Electrical Diagrams/Diagrams By Number
Refer to Wiring Diagram Set 43 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Power Steering Controls for schematic and connector information.
See: Diagrams/Electrical Diagrams/Diagrams By Number
Normal Operation
The Power Steering Control Module (PSCM) communicates with the scan tool through the High Speed Controller Area Network (HS-CAN). Circuits
VDB04 (WH/BU) (HS-CAN +) and VDB05 (WH) (HS-CAN -) provide the HS-CAN connection to the PSCM. Voltage for the Power Steering Control
Module (PSCM) is provided by circuit CBP35 (YE/GY) and circuit GD116 (BK/VT) provides ground.
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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PSCM