Explorer Sport Trac 2WD V6-4.0L (2009)
CONNECT the negative battery cable. GO to C6.
No
REPAIR the circuit for high resistance. CONNECT the negative battery cable. TEST the system for normal operation.
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C6 CHECK FOR CORRECT SJB OPERATION
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Disconnect the SJB connectors.
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Check for:
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corrosion
-
damaged pins
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pushed-out pins
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Connect the SJB 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 SJB. REFER to Smart Junction Box (SJB) See: Power and Ground Distribution/Power Distribution Module/Service and Repair. TEST
the system for normal operation.
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 D: DTC U0155
Smart Junction Box (SJB)
Pinpoint Tests
Pinpoint Test D: DTC U0155
Normal Operation
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DTC U0155 (Lost Communication With Instrument Panel Cluster (IC) Control Module) - set by the SJB whenever it receives invalid data from
the Instrument Cluster (IC).
This pinpoint test is intended to diagnose the following:
-
Module communication
-
SJB
-
IC
PINPOINT TEST D: DTC U0155
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D1 VERIFY CUSTOMER CONCERN
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Ignition ON.
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Verify that there is an observable symptom present.
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Is an observable symptom present?
Yes
GO to D2.
No
The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
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