Focus L4-2.0L (2009)
J3 CHECK THE PCM
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Disconnect: PCM C175b.
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Do the stoplamps continue to illuminate?
Yes
If equipped with stability control, GO to J4.
If not equipped with stability control, GO to J5.
No
GO to J7.
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J4 CHECK THE ABS MODULE
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Disconnect: ABS Module C155.
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Do the stoplamps continue to illuminate?
Yes
GO to J5.
No
GO to J8.
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J5 CHECK CIRCUIT CCB08 (VT/WH) FOR A SHORT TO VOLTAGE
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Disconnect: SJB C2280b.
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Does the high mounted stoplamp continue to illuminate?
Yes
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
No
GO to J9.
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J6 CHECK THE STOPLAMPS VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
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Disconnect: SJB C2280d.
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Do the stoplamps continue to illuminate?
Yes
If the LH rear lamp continues to illuminate, REPAIR circuit CLS18 (GY/BN) for a short to voltage. CLEAR the DTCs. REPEAT the self-test.
If the RH rear lamp continues to illuminate, REPAIR circuit CLS19 (VT/OG) for a short to voltage. CLEAR the DTCs. REPEAT the self-test.
No
GO to J9.
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J7 CHECK FOR CORRECT PCM OPERATION
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Disconnect all the PCM connectors.
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Check for:
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corrosion
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damaged pins
