Escape 4WD L4-2.5L (2010)
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
No
GO to D16.
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D16 CHECK THE DC/DC CONVERTER ENABLE CIRCUIT FOR A SHORT TO GROUND
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Ignition OFF.
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Measure the resistance between DC/DC converter C1457A-1, circuit CYD03 (BN/YE), harness side and ground.
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Is the resistance greater than 10,000 ohms?
Yes
GO to D17.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
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D17 CHECK FOR CORRECT DC/DC CONVERTER OPERATION
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Connect: PCM C175T.
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Ignition ON.
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Measure the battery voltage.
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While monitoring the measured battery voltage, momentarily connect a fused jumper wire between DC/DC converter C1457A-1, circuit CYD03
(BN/YE), component side and ground.
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While monitoring the measured battery voltage, disconnect the fused jumper wire between DC/DC converter C1457A-1, circuit CYD03 (BN/YE),
component side and ground.
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Does the battery voltage drop approximately 1 volt when the jumper wire is connected (disabling the DC/DC converter) and increase
approximately 1 volt when the jumper wire is disconnected (enabling the DC/DC converter)?
Yes
