Mountaineer AWD V8-4.6L (2010)
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Measure the resistance between trailer battery charge relay pin 86, circuit CBP12 (GN/WH), BJB face side and the SJB C2280e-6, circuit CBP12
(GN/WH), harness side.
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Is the resistance less than 5 ohms?
Yes
GO to AC12.
No
REPAIR circuit CBP12 (GN/WH) for an open. TEST the system for normal operation.
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AC6 CHECK THE BATTERY CHARGE RELAY COIL GROUND CIRCUIT FOR AN OPEN
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Ignition OFF.
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Disconnect: Negative Battery Cable.
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Measure the resistance between the trailer battery charge relay pin 85, circuit GD120 (BK/GN), BJB face side and ground.
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Is the resistance less than 5 ohms?
Yes
GO to AC7.
No
REPAIR circuit GD120 (BK/GN) for an open. TEST the system for normal operation.
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AC7 CHECK FOR VOLTAGE TO THE TRAILER BATTERY CHARGE RELAY
