Focus L4-2.0L (2009)
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Enter the following diagnostic mode on the scan tool: PCM Self-Test.
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Retrieve the continuous memory DTCs from the PCM.
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Is DTC P0620, P0625, P0626 or P065B set in the PCM?
Yes
REFER to Charging System.
No
GO to C3.
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C3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
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Ignition OFF.
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Check the battery condition and verify the battery is fully charged. Refer to Battery, Battery Condition Test. See: Starting and
Charging/Battery/Testing and Inspection/Pinpoint Tests
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Is the battery OK and fully charged?
Yes
GO to C4.
No
REFER to Charging System.
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C4 CHECK THE SJB VOLTAGE SUPPLY
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Measure and record the voltage at the battery.
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Disconnect: SJB C2280G.
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Ignition ON.
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Measure the voltage between the SJB fuse 5 (10A), harness side and ground.
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Is the voltage within 0.2 volt of the recorded battery voltage?
Yes
GO to C5.
No
REPAIR circuit SBB39 (WH/RD) for high resistance. CLEAR the DTCs. REPEAT the self-test.
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C5 CHECK THE SJB GROUND CIRCUIT
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Ignition OFF.
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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 and C2280D-12, circuit GD133 (BK), harness side and ground.