B3000 V6-3.0L (2007)
Step 6
Pinpoint Test 6
PINPOINT TEST 6: NO STANDARD CORPORATE PROTOCOL (SCP) COMMUNICATIONS NETWORK COMMUNICATION
Normal Operation
The powertrain control module (PCM) communicates with the WDS or equivalent tester through the SCP communications network circuits (T/O) and
(P/LB). If one of the bus wires become shorted to ground or voltage communications can continue at a degraded level. Check the SCP communications
network circuits between the PCM and the data link connector (DLC) D-01. The total resistance values must not be more than 5 ohms. If the resistance
is more than 5 ohms, there is an open in one or both SCP communication network circuits, damage to the module connector, a problem with a in-line
connector, or a problem with the DLC D-01. If, after individual checks of each circuit leading to a module show resistance values less than 5 ohms, and
no in-line connector issues present.
Possible Causes
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SCP data plus circuit (T/O) open, short to ground, or short to voltage
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SCP data minus circuit (P/LB) open, short to ground, or short to voltage
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DLC D-01
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PCM 0140-175
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PCM
CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.
Step 1-Step 2
