Ranger 2WD V6-4.0L (2010)
Communications Network
Pinpoint Tests
Pinpoint Test B: The Occupant Classification System Module (OCSM) Does Not Communicate With the Scan Tool
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 46, Supplemental Restraint System for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams
By Number
Normal Operation
The Occupant Classification System Module (OCSM) communicates with the scan tool through the High Speed Controller Area Network (HS-CAN).
This pinpoint test is intended to diagnose the following:
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Fuse
-
Wiring, terminals or connectors
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OCSM
PINPOINT TEST B: THE OCSM DOES NOT COMMUNICATE WITH THE SCAN TOOL
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the
connector.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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B1 CHECK THE OCSM VOLTAGE SUPPLY CIRCUITS FOR AN OPEN
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Ignition OFF.
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Disconnect: OCSM C3159.
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Ignition ON.
-
Measure the voltage between the OCSM C3159-1, circuit CBP08 (GY/YE), harness side and ground.
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Is the voltage greater than 10 volts?
Yes
GO to B2.
No
VERIFY the Smart Junction Box (SJB) fuse 8 (10A) is OK.
If OK, REPAIR the circuit.
If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the network test with the scan
tool. See: Diagrams/Electrical Diagrams/Diagrams By Number
