Mariner 4WD V6-3.0L (2010)
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damaged pins
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pushed-out pins
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Connect all the SJB connectors and make sure they seat correctly.
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Operate the system and verify the concern is still present.
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Is the concern still present?
Yes
INSTALL a new SJB. REFER to Body Control Systems. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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Pinpoint Test K: The Stoplamps Are On Continuously
Stoplamps
Pinpoint Tests
Pinpoint Test K: The Stoplamps Are On Continuously
Refer to Wiring Diagram Set 90 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Turn Signal/Stop/Hazard Lamps for schematic and connector
information. See: Diagrams/Electrical Diagrams/Diagrams By Number
When the brake pedal is applied, the stoplamp switch routes voltage to the Smart Junction Box (SJB), the high mounted stoplamp, and the PCM. When
the SJB detects the brake pedal is applied, the SJB provides voltage to the LH and RH rear stoplamps. If equipped with trailer tow, voltage is also
supplied to the respective trailer tow stop/turn relay.
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DTC B1485 (Brake Pedal Input Short to Battery) - an on-demand DTC that sets when the SJB detects a short to voltage from the stoplamp switch
input circuit.
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DTC B2045 (Left Rear Stop Lamp Circuit Open) - an on-demand DTC that sets when the SJB detects a short to voltage from the LH rear stop/turn
lamp voltage supply circuit.
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DTC B2047 (Right Rear Stoplamp Circuit Open) - an on-demand DTC that sets when the SJB detects a short to voltage from the RH rear stop/turn
lamp voltage supply circuit.
This pinpoint test is intended to diagnose the following:
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Wiring, terminals or connectors
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Stoplamp switch
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PCM
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SJB
PINPOINT TEST K: THE STOPLAMPS ARE ON CONTINUOUSLY
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K1 DETERMINE IF ALL THE STOPLAMPS ARE ILLUMINATED
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Ignition OFF.
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Observe the stoplamps with the brake pedal released.
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Are all of the stoplamps illuminated?
Yes
GO to K3.
No
GO to K2.
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K2 CHECK THE STOPLAMPS VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
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Disconnect: SJB C2280d.
