Ranger 2WD L4-2.3L (2009)
network test with the scan tool.
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J16 CHECK FOR CORRECT AUDIO UNIT (ACM) OPERATION
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Disconnect all the audio unit (ACM) 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 audio unit (ACM) 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 audio unit (ACM). 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 K: No Power To The Scan Tool
Communications Network
Pinpoint Test
Pinpoint Test K: No Power To The Scan Tool
Refer to wiring Diagram Set 14, Module Communications Network for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Normal Operation
The scan tool is connected to the Data Link Connector (DLC) to communicate with the High Speed Controller Area Network (HS-CAN) and ISO 9141
communications networks.
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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DLC
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Scan tool
PINPOINT TEST K: NO POWER TO THE SCAN TOOL
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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K1 CHECK THE DLC PINS FOR DAMAGE
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Disconnect the scan tool from the DLC.
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Inspect DLC pins 4, 5 and 16 for damage.
