DTC DETECTION LOGIC
DTC No. | Trouble diagnosis name | DTC detecting condition | Possible cause |
P0327 | Knock sensor circuit low input | An excessively low voltage from the sensor is sent to ECM. |
|
P0328 | Knock sensor circuit high input | An excessively low voltage from the sensor is sent to ECM. |
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 1st trip 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 KNOCK SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between knock sensor
harness connector and ECM harness connector.
2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK KNOCK SENSOR
Refer to EC, "Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace knock sensor. Refer to EM, "Exploded View".
5.CHECK INTERMITTENT INCIDENT
Refer to GI, "Intermittent Incident".
>> INSPECTION END
Component Inspection
1.CHECK KNOCK SENSOR
NOTE:
It is necessary to use an ohmmeter which can measure more than 10 MΩ.
CAUTION: Do not use any knock sensors that have been dropped or physically damaged. Use only new ones.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace knock sensor. Refer to EM, "Exploded View".
Malfunction indicator lamp
Component Function Check
1.CHECK MIL FUNCTION
Turn ignition switch ON.
Make sure that MIL lights up.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC, "Diagnosis Procedure".
Diagnosis Procedure
1.CHECK DTC
Check that DTC UXXXX is not display ...
P0740 Torque converter
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
P0740
Torque Converter Clutch Circuit/
Open
The follow diagnosis conditions
are met, and the TCM torque
converter clutch solenoid valve
current monitor readin ...