Ranger 4WD V6-4.0L (2009)
GO to X3.
No
The system is operating correctly at this time. The DTC may have been set due to an intermittent communication drop off from high network traffic.
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X3 RETRIEVE THE RECORDED DTCs FROM THE PCM SELF-TEST
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Enter the following diagnostic mode on the scan tool: PCM Self-Test.
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Check for recorded PCM DTCs from the self-test.
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Is DTC U0155 recorded?
Yes
REFER to Information Bus to diagnose no communication with the IC.
No
GO to X4.
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X4 CHECK THE NETWORK OPERATION
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Enter the following diagnostic mode on the scan tool: Network Test.
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Carry out the network test.
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Does the IC pass the network test?
Yes
INSTALL a new IC. TEST the system for normal operation.
No
REFER to Information Bus to diagnose no communication with the IC.
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