Explorer AWD V6-4.0L VIN K Flex Fuel (2003)
Test G4-G5
Normal Operation
The PCM 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 PCM C175a 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 PCM C175a,
or a problem in the in-line connector C263.
Possible Causes
-
circuits 914 (TN/OG) or 915 (PK/LB) shorted to ground or open
-
PCM C175a
-
in-line C263
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DLC C251
-
PCM
Test H
PINPOINT TEST H: THE INSTRUMENT CLUSTER DOES NOT RESPOND TO THE DIAGNOSTIC TOOL
