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EC-254
[QR (WITH EURO-OBD)]
DTC P0340 CMP SENSOR (PHASE)
DTC P0340 CMP SENSOR (PHASE) PFP:23731
Component Description EBS010Q1
The camshaft position sensor (PHASE) senses the retraction of
intake valve camshaft to identify a particular cylinder. The camshaft
position sensor (PHASE) senses the piston position.
When the crankshaft position sensor (POS) system becomes inoper-
ative, the camshaft position sensor (PHASE) provides various con-
trols of engine parts instead, utilizing timing of cylinder identification
signals.
The sensor consists of a permanent magnet and Hall IC.
When engine is running, the high and low parts of the teeth cause
the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to
change.
Due to the changing magnetic field, the voltage from the sensor changes.
On Board Diagnosis Logic EBS010Q2
DTC Confirmation Procedure EBS010Q3
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V with igni-
tion switch ON.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Crank engine for at least 2 seconds and run it for at least 5 sec-
onds at idle speed.
4. If 1st trip DTC is detected, go to EC-256, "
Diagnostic Procedure"
.
If 1st trip DTC is not detected, go to next step.
5. Maintain engine speed at more than 800 rpm for at least 5 sec-
onds.
6. If 1st trip DTC is detected, go to EC-256, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
PBIB0562E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0340
0340
Camshaft position sensor
(PHASE) circuit
● The cylinder No. signal is not sent to ECM
for the first few seconds during engine
cranking.
● The cylinder No. signal is not set to ECM
during engine running.
● The cylinder No. signal is not in the normal
pattern during engine running.
● Harness or connectors
(The sensor circuit is open or shorted.)
● Camshaft position sensor (PHASE)
● Camshaft (Intake)
● Starter motor (Refer to SC-21 .)
● Starting system circuit (Refer to SC-21 .)
● Dead (Weak) battery
SEF058Y
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