Mariner 4WD V6-3.0L (2010)
Refer to Wiring Diagram Set 10 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Grounds for schematic and connector information. See:
Diagrams/Electrical Diagrams/Diagrams By Number
Refer to Wiring Diagram Set 13 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Power Distribution/SJB for schematic and connector information.
See: Diagrams/Electrical Diagrams/Diagrams By Number
Refer to Wiring Diagram Set 14 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Module Communications Network for schematic and connector
information. See: Diagrams/Electrical Diagrams/Diagrams By Number
Normal Operation
The Smart Junction Box (SJB) communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN).
This pinpoint test is intended to diagnose the following:
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Fuse
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Wiring, terminals or connectors
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SJB
PINPOINT TEST Q: THE SJB DOES NOT RESPOND TO 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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Q1 CHECK THE SJB FUSE FOR VOLTAGE
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Ignition OFF.
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Measure the voltage between the back of the SJB fuse 5 (10A) terminals (both sides) and ground.
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Are the voltages greater than 10 volts?
Yes
GO to Q2.
No
VERIFY the Smart Junction Box (SJB) fuse 5 (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
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Q2 CHECK THE SJB GROUND CIRCUIT FOR AN OPEN
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Disconnect: Negative Battery Cable .
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Disconnect: SJB C2280d .
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Measure the resistance between the SJB C2280d-8, circuit GD182 (BK/GY), harness side and ground; and between the SJB C2280d-12, circuit
GD182 (BK/GY), harness side and ground.
