Navigator 4WD V8-5.4L VIN 5 (2006)
B1-B2
B3
Normal Operation
The restraint control module (RCM) communicates with the diagnostic tool through the international standards organization (ISO) 9141
communications network, circuit 70 (LB/WH). Check circuit 70 (LB/WH) between the RCM C310a and the data link connector (DLC) C251. The
total resistance value must not be more than 5 ohms. If the resistance is more than 5 ohms there is an open in the ISO 9141 communications network
circuit, damage to the DLC C251, damage to the RCM C310a, or a problem in an in-line connector.
Possible Causes
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ISO 9141 circuit 70 (LB/WH) open
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RCM
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RCM C310a
Test C: The Vehicle Security Module Does Not Respond To The Diagnostic Tool
PINPOINT TEST C: THE VEHICLE SECURITY MODULE DOES NOT RESPOND TO THE DIAGNOSTIC TOOL