 DTC DETECTION LOGIC
DTC No.
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Trouble diagnosis name
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DTC detecting condition
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Possible cause
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P1220
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Fuel pump control module (FPCM)
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During engine cranking, the signal voltage of the FPCM to the ECM is too low.
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- Harness or connectors
(FPCM circuit is open or shorted) (Fuel pump circuit is open or shorted)
- FPCM
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 DTC CONFIRMATION PROCEDURE
 1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test. - Turn ignition switch OFF and wait at least 10 seconds.
- Turn ignition switch ON.
- Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:- Before performing the following procedure, confirm that battery voltage is more than 12–15 V at idle.
- Before performing the following procedure, check that the engine coolant temperature is −10°C (14°F) or more.
>>GO TO 2.
 2.PERFORM DTC CONFIRMATION PROCEDURE
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