DTC Logic
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition | Possible cause |
P1078 | EXH TIM SEN/CIRC-B1 (Exhaust valve timing control position sensor circuit bank 1) | An excessively high or low voltage from the sensor is sent to ECM. |
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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.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
Is 1st trip DTC detected? YES >> Proceed to EC-359, "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
Check sensor power supply 2 circuit. Refer to EC-444, "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-360, "Component Inspection (EVT Control Position Sensor)".
Is the inspection result normal? YES >> GO TO 6.
NO >> Replace EVT control position sensor. Refer to EM-60, "Removal and Installation".
6.CHECK CAMSHAFT (EXT)
Check the following.
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> Remove debris and clean the signal plate of camshaft rear end or replace camshaft. Refer to EM-60, "Removal and Installation".
Component Inspection (EVT Control Position Sensor)
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-60, "Removal and Installation".
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-60, "Removal and Installation".
System
STARTING SYSTEM (WITH INTELLIGENT KEY)
Component Parts Location
Starter motor
Transmission range switch (CVT Models)
IPDM E/R (view with air inlet duct
removed)
Clutch interlock switch (M/T Models)
ECM
Component Description
Component part
Description
Starter ...
Ecu diagnosis information
BCM
Reference value
Note:
The signal tech ii tool (j-50190) can be used to perform the following
functions. Refer to the signal tech ii
user guide for additional information.
Activate and display tpms transmitter ids
Display tire pressure reported by the tpms transmitter
Read TPMS DTCs ...
Avoiding collision and rollover
WARNINGFailure to operate this vehicle in a safe
and prudent manner may result in loss of
control or an accident.
Be alert and drive defensively at all times. Obey
all traffic regulations. Avoid excessive speed,
high speed cornering, or sudden steering maneuvers,
because these ...