Mariner 2WD L4-2.5L (2009)
NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network
test results.
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Disconnect: BJB Fuses 5 (10A) and 24 (10A).
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Enter the following diagnostic mode on the scan tool: Network Test.
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Repeat the network test.
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Do all other modules pass the network test?
Yes
INSTALL the removed fuses. Go To Pinpoint Test H. See: Pinpoint Test H: The Transmission Control Module (TCM) Does Not Respond To The Scan
Tool
No
INSTALL the removed fuses. An intermittent fault is not present. Go To Pinpoint Test S. See: Pinpoint Test S: No High Speed Controller Area Network
(HS-CAN) Communication, All Modules Are Not Responding
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S1-S20
Communications Network
Pinpoint Tests
Pinpoint Test S: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding
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 23 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Electronic Engine Controls - 2.5L for schematic and connector
information. See: Diagrams/Electrical Diagrams/Diagrams By Number
Normal Operation
The High Speed Controller Area Network (HS-CAN) uses an unshielded twisted pair cable, circuits VDB04 (WH/BU) and VDB05 (WH).
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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4X4 control module (if equipped)
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ABS module
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Accessory Protocol Interface Module (APIM) (if equipped)
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Instrument Cluster (IC)
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Occupant Classification System Module (OCSM)
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PCM
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Power Steering Control Module (PSCM)
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Restraints Control Module (RCM)
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Battery Control Module (BCM) (Hybrid only)
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Transmission Control Module (TCM) (Hybrid only)
PINPOINT TEST S: NO HS-CAN COMMUNICATION, ALL MODULES ARE NOT RESPONDING
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the
connector.
NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint
test. See: Initial Inspection and Diagnostic Overview/Communications Network/Inspection And Verification
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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S1 CHECK THE DLC PINS FOR DAMAGE