Milan FWD L4-2.5L (2010)
Information Bus: Pinpoint Tests
Pinpoint Test A: The PCM Does Not Respond To The Scan Tool
Communications Network
Pinpoint Tests
Pinpoint Test A: The PCM Does Not Respond To The Scan Tool
Refer to Wiring Diagram Set 14 (Fusion/Milan/MKZ, Fusion Hybrid/Milan Hybrid), Module Communications Network for schematic and connector
information. See: Diagrams/Electrical Diagrams/Diagrams By Number
Refer to Wiring Diagram Set 23 (Fusion/Milan/MKZ, Fusion Hybrid/Milan Hybrid), Electronic Engine Controls - 2.5L for schematic and connector
information. See: Diagrams/Electrical Diagrams/Diagrams By Number
Refer to Wiring Diagram Set 24 (Fusion/Milan/MKZ, Fusion Hybrid/Milan Hybrid), Electronic Engine Controls - 3.0L for schematic and connector
information. See: Diagrams/Electrical Diagrams/Diagrams By Number
Refer to Wiring Diagram Set 25 (Fusion/Milan/MKZ, Fusion Hybrid/Milan Hybrid), Electronic Engine Controls - 3.5L for schematic and connector
information. See: Diagrams/Electrical Diagrams/Diagrams By Number
Normal Operation
The PCM 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 network connection to the PCM. An Integrated Diagnostic System (IDS) session cannot be established if the
PCM communication fails when attempting to identify the vehicle.
This pinpoint test is intended to diagnose the following:
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Wiring, terminals or connectors
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PCM
PINPOINT TEST A: THE PCM 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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A1 VERIFY WHETHER OTHER HS-CAN MODULES PASS THE NETWORK TEST
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Enter the following diagnostic mode on the scan tool: Network Test .
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In the LH pane of the IDS network test display screen, verify whether any HS-CAN modules passed the network test.
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Is the text "pass" or a DTC listed next to any of the following modules (if equipped): 4X4 control module, ABS module, ACCM (Hybrid
only), Accessory Protocol Interface Module (APIM), Battery Energy Control Module (BECM) (Hybrid only), DC/DC (Hybrid only),
Headlamp Control Module (HCM), Instrument Panel Cluster (IPC), Power Steering Control Module (PSCM), Restraints Control
Module (RCM), Occupant Classification System Module (OCSM), PCM or Transmission Control Module (TCM)?
Yes
If "pass" or a DTC was listed next to the PCM, a network fault is not currently present. GO to Pinpoint Test AE to diagnose an intermittent HS-CAN
fault condition. See: Pinpoint Test AE: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding
If "pass" or a DTC was listed next to one or more modules other than the PCM, GO to A2.
No