Navigator 4WD V8-5.4L (2010)
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X5 CHECK FOR RESTORED COMMUNICATION WITH THE PCM DISABLED
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Disconnect: Battery Junction Box (BJB) Fuses 35 (40A) and 75 (20A).
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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 A. See: Pinpoint Test A: The PCM Does Not Respond To The Scan Tool
No
INSTALL the removed fuses. GO to X6.
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X6 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE ABS MODULE DISABLED
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Disconnect: BJB Fuses 52 (10A), 68 (60A) and 69 (60A).
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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 B. See: Pinpoint Test B: The ABS Module Does Not Respond To The Scan Tool
No
INSTALL the removed fuses. GO to X7.
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X7 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE TCM DISABLED
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Disconnect: BJB Fuse 26 (15A) and 54 (5A).
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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 G. See: Pinpoint Test G: The Transmission Control Module (TCM) Does Not Respond To The Scan
Tool
No
INSTALL the removed fuses. GO to X8.
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X8 VERIFY VEHICLE EQUIPMENT - 4X4 CONTROL MODULE
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Inspect the vehicle for a 4X4 control module.
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Is the vehicle equipped with a 4X4 control module?
Yes
