Montego AWD V6-3.0L VIN 1 (2005)
Test F2-F3
Normal Operation
The PCM communicates with the diagnostic tool through the high speed controller area network (CAN), circuits 1908 (WH) and 1909 (BK). The high
speed CAN remains operational with the severing of one of the high speed CAN circuits or if the data minus circuit is shorted to ground.
Communication may also continue if one of the termination resistors is lost. The high speed CAN does not remain operational if the data plus circuit is
shorted to ground or shorted to voltage. The high speed CAN also does not remain operational if the data minus circuit is shorted to voltage. The PCM
and instrument cluster share communications network termination responsibilities with the use of a split termination resistor in each module. Check
circuits 1908 (WH) and 1909 (BK) between the PCM C175b and the data link connector (DLC) C251. 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 of the high speed CAN circuits, damage to the DLC C251, damage to the
PCM C175b, or a problem in an in-line connector.
Possible Causes
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high speed CAN circuit 1908 (WH) or 1909 (BK) short to ground or open
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DLC C251
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PCM C175b
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PCM
Test G: The Restraint Control Module (RCM) Does Not Respond To The Diagnostic Tool
PINPOINT TEST G: THE RESTRAINT CONTROL MODULE (RCM) DOES NOT RESPOND TO THE DIAGNOSTIC TOOL
