Taurus AWD V6-3.5L (2009)
Pinpoint Test S: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding
Refer to Wiring Diagram Set 14, Module Communications Network for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Refer to Wiring Diagram Set 25, Electronic Engine Controls - 3.5L for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Normal Operation
Circuits VDB04 (WH/BU) (HS-CAN +) and VDB05 (WH) (HS-CAN -) provide the High Speed Controller Area Network (HS-CAN) connection. The
HS-CAN is used for network communication between the PCM, the Steering Effort Control Module (SECM), the ABS module, the Restraints Control
Module (RCM), the Occupant Classification System Module (OCSM), the 4X4 control module, the Accessory Protocol Interface Module (APIM) and
the Instrument Cluster (IC).
This pinpoint test is intended to diagnose the following:
-
Fuse
-
Wiring, terminals or connectors
-
ABS module
-
APIM
-
4X4 control module
-
IC
-
OCSM
-
PCM
-
RCM
-
SECM
PINPOINT TEST S: NO HS-CAN COMMUNICATION, ALL MODULES ARE NOT RESPONDING
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the
connector.
NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint
test. See: Initial Inspection and Diagnostic Overview/Communications Network/Inspection and Verification
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S1 CHECK THE DATA LINK CONNECTOR (DLC) PINS FOR DAMAGE
-
Ignition OFF.
-
Disconnect the scan tool cable from the DLC.
-
Inspect DLC pins 6 and 14 for damage.
-
Are DLC pins 6 and 14 OK?
Yes
GO to S2.
No
REPAIR the DLC as necessary. CLEAR the DTCs. REPEAT the network test with the scan tool.
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S2 CHECK THE HS-CAN TERMINATION RESISTANCE
-
Ignition OFF.
-
NOTE: Failure to disconnect the battery will result in false resistance readings.
-
Disconnect the battery ground cable.
