Navigator 4WD V8-5.4L (2010)
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Is the resistance between 54 and 66 ohms?
Yes
GO to X3.
No
CONNECT the negative battery cable. GO to Pinpoint Test Y. See: Pinpoint Test Y: No High Speed Controller Area Network (HS-CAN)
Communication, All Modules Are Not Responding
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X3 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO GROUND
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Measure the resistance between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit
VDB05 (WH), harness side and ground.
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Are the resistances greater than 1,000 ohms?
Yes
CONNECT the negative battery cable. GO to X4.
No
CONNECT the negative battery cable. GO to Pinpoint Test Y. See: Pinpoint Test Y: No High Speed Controller Area Network (HS-CAN)
Communication, All Modules Are Not Responding
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X4 CHECK THE HS-CAN (+) AND HS-CAN (-) CIRCUITS FOR A SHORT TO VOLTAGE
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Ignition ON.
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Measure the voltage between the DLC C251-6, circuit VDB04 (WH/BU), harness side and ground; and between the DLC C251-14, circuit
VDB05 (WH), harness side and ground.
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Is the voltage greater than 6 volts?
Yes
REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
No
GO to X5.
