Aviator 2WD V8-4.6L DOHC (2003)
Test A4-A5
Normal Operation
The VAPS module communicates with the diagnostic tool through the SCP communications network circuits 914 (TN/OG) and 915 (PK/LB). If one
of the bus wires becomes shorted to ground or voltage, or if some but not all termination resistors are lost, communications can continue. Check
circuits 914 (TN/OG) and 915 (PK/LB) between the VAPS module C2231b and the data link connector (DLC) C251. Total resistance values must not
be more than 5 ohms. If the resistance is more than 5 ohms there is an open in circuit 914 (TN/OG) or 915 (PK/LB), damage to the DLC C251,
damage to the VAPS module C2231b, or a problem in the in-line connector C212.
Possible Causes
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circuit 914 (TN/OG) or 915 (PK/LB) shorted to ground or open
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C2231b
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in-line C212
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DLC C251
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VAPS module
Test B
PINPOINT TEST B: THE VEHICLE SECURITY MODULE DOES NOT RESPOND TO THE DIAGNOSTIC TOOL