Expedition 2WD V8-5.4L (2009)
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Is the resistance less than 5 ohms?
Yes
CONNECT the negative battery cable. GO to X34.
No
REPAIR the circuit. CONNECT all modules. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.
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X27 CHECK FOR CORRECT PCM OPERATION
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Disconnect all the PCM 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 PCM 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 PCM. CONNECT all modules. 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. CONNECT all modules. CLEAR
the DTCs. REPEAT the network test with the scan tool.
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X28 CHECK FOR CORRECT VDM OPERATION
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Disconnect all the VDM connectors.
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Check for:
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corrosion
-
damaged pins
-
pushed-out pins
-
Connect all the VDM connectors and make sure they seat correctly.
-
Operate the system and verify the concern is still present.
-
Is the concern still present?
Yes
INSTALL a new VDM. CONNECT all modules. 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. CONNECT all modules. CLEAR
the DTCs. REPEAT the network test with the scan tool.
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X29 CHECK FOR CORRECT ABS MODULE OPERATION
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Disconnect the ABS module connector.
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Check for:
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corrosion
-
damaged pins
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pushed-out pins
