DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
P1078 | EXH TIM SEN/CIRC-B1 (EXH TIM SEN/CIRC-B1) | An excessively high or low voltage from the sensor is sent to ECM. |
POSSIBLE CAUSE
FAIL-SAFE
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
Is 1st trip DTC detected? YES >> Proceed to EC-385, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK EXHAUST VALVE TIMING (EVT) CONTROL POSITION SENSOR POWER SUPPLY
Is the inspection result normal? YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK SENSOR POWER SUPPLY 2 CIRCUIT
Perform EC-484, "Diagnosis Procedure".
Is inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
3.CHECK EVT CONTROL POSITION SENSOR GROUND CIRCUIT
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair or replace error-detected parts.
4.CHECK EVT CONTROL POSITION SENSOR INPUT SIGNAL CIRCUIT
Is the inspection result normal? YES >> GO TO 5.
NO >> Repair or replace error-detected parts.
5.CHECK EVT CONTROL POSITION SENSOR
Check the EVT control position sensor. Refer to EC-387, "Component Inspection".
Is the inspection result normal? YES >> GO TO 6.
NO >> Replace EVT control position sensor. Refer to EM-64, "Exploded View".
6.CHECK CAMSHAFT (EXT)
Check the following.
Is the inspection result normal? YES >> GO TO 7.
NO >> Remove debris and clean the signal plate of camshaft rear end or replace camshaft. Refer to EM-64, "Removal and Installation".
7.CHECK INTERMITTENT INCIDENT
Refer to GI-41, "Intermittent Incident".
>> INSPECTION END
Component Inspection
1.EXHAUST VALVE TIMING (EVT) CONTROL POSITION SENSOR-1
Is the inspection result normal? YES >> GO TO 2.
NO >> Replace EVT control position sensor. Refer to EM-64, "Exploded View".
2.EVT CONTROL POSITION SENSOR-2
Check resistance EVT control position sensor terminals as shown below.
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace EVT control position sensor. Refer to EM-64, "Exploded View".
Steering column
Inspection
HOLE COVER SEAL, HOLE COVER AND LOWER SHAFT
Check each part of hole cover seal, hole cover and steering column and lower
shaft for damage or other malfunctions.
Replace if necessary.
STEERING COLUMN
Check each part of steering column for damage or other
malfunctions. ...
Precaution
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT
PRE-TENSIONER"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”,
used along
with a front seat belt, helps to reduce the risk or severity of injury to the
...
P0447 EVAP canister vent control valve
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P0447
VENT CONTROL VALVE
(Evaporative emission system vent control
circuit open)
An improper voltage signal is sent to ECM through EVAP canister ...