DTC DETECTION LOGIC
DTC No. | Trouble diagnosis name | DTC detecting condition | Possible cause |
P0643 |
Sensor power supply circuit short | ECM detects a voltage of power source for sensor is excessively low or high. |
|
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
Is DTC detected?
YES >> Go to EC, "Diagnosis Procedure".
NO >> INSPECTION END
1.CHECK GROUND CONNECTION
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK SENSOR POWER SUPPLY
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 3.
3.CHECK SENSOR POWER SUPPLY CIRCUIT
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair short to ground or short to power in harness or connectors.
4.CHECK COMPONENTS
Check the following.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace malfunctioning component.
5.CHECK INTERMITTENT INCIDENT
Refer to GI, "Intermittent Incident".
>> INSPECTION END
DTC Logic DTC DETECTION LOGIC DTC No. Trouble diagnosis (Trouble diagnosis content) DTC detecting condition Possible cause P0607 ECM (CAN communication bus) ...
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