Mariner 4WD L4-2.5L (2010)
Yes
INSTALL a new TCM. REFER to Automatic Transmission/Transaxle &/or Transmission Control 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.
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Pinpoint Test I: The Battery Control Module (BCM) Does Not Respond To The Scan Tool
Communications Network
Pinpoint Tests
Pinpoint Test I: The Battery Control Module (BCM) Does Not Respond To The Scan Tool
Refer to Wiring Diagram Set 12 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Charging System for schematic and connector information. See:
Diagrams/Electrical Diagrams/Diagrams By Number
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
Normal Operation
The Battery Control Module (BCM) is present on hybrid vehicles only. The BCM communicates with the scan tool through the High Speed Controller
Area Network (HS-CAN).
This pinpoint test is intended to diagnose the following:
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Fuse
-
Wiring, terminals or connectors
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BCM
PINPOINT TEST I: THE BCM DOES NOT RESPOND TO THE SCAN TOOL
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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I1 CHECK THE POWER TO THE BCM
WARNING: To prevent the risk of high-voltage shock, always follow precisely all warnings and service instructions, including instructions to
depower the system. The high-voltage hybrid system utilizes approximately 300 volts DC, provided through high-voltage cables to its
components and modules. The high-voltage cables and wiring are identified by orange harness tape or orange wire covering. All high-voltage
components are marked with high-voltage warning labels with a high-voltage symbol. Failure to follow these instructions may result in serious
personal injury or death.
WARNING: Always wear high-voltage insulated safety gloves with leather outer gloves and a face shield when servicing the battery pack
sensor module (BPSM) and never remove the high-voltage BPSM connector unless directed by a service procedure. High voltage is present at
the BPSM at all times, even with service disconnect plug removal. Depowering the system will not remove voltage from the BPSM connector
with the orange harness. Follow all service instructions. Failure to follow these instructions may result in serious personal injury or death.
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Ignition OFF.
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Disconnect: BCM C4227a .
-
Ignition ON.
-
Measure the voltage between the BCM, harness side and ground as follows:
