Mariner 2WD L4-2.5L (2009)
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Disconnect all the HVAC 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 HVAC 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 HVAC module. 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 M: The Satellite Digital Audio Receiver System (SDARS) Module Does Not Respond To
The Scan Tool
Communications Network
Pinpoint Tests
Pinpoint Test M: The Satellite Digital Audio Receiver System (SDARS) Module 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 130 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Audio System for schematic and connector information. See:
Diagrams/Electrical Diagrams/Diagrams By Number
Normal Operation
The Satellite Digital Audio Receiver System (SDARS) module communicates with the scan tool through the Medium Speed Controller Area Network
(MS-CAN). Circuits VDB06 (GY/OG) (MS-CAN +) and VDB07 (VT/OG) (MS-CAN -) provide the network connection to the SDARS module.
Voltage to the SDARS module is provided by circuit SBP14 (BN/RD). Ground is provided by circuit GD115 (BK/GY).
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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SDARS module
PINPOINT TEST M: THE SDARS MODULE 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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M1 CHECK THE SDARS MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
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Ignition OFF.
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Disconnect: SDARS Module C3290.
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Ignition ON.
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Measure the voltage between the SDARS module C3290-9, circuit SBP14 (BN/RD), harness side and ground.