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PBIB0562E
Component Description
NFEC0945
The camshaft position sensor (PHASE) senses the retraction with
intake valve camshaft to identify a particular cylinder. The crank-
shaft position sensor (POS) senses the piston position. When the
crankshaft position sensor (POS) system becomes inoperative, the
camshaft position sensor (PHASE) provides various controls of
engine parts instead, utilizing timing of cylinder identification sig-
nals. 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
NFEC0947
DTC No.
Trouble diagnosis
name
DTC Detecting Condition Possible Cause
P0340
0340
(Bank 1)
P0345
0345
(Bank 2)
Camshaft position sen-
sor circuit
I The cylinder No. signal is not sent to ECM
for the first few seconds during engine
cranking.
I The cylinder No. signal is not sent to ECM
during engine running.
I The cylinder No. signal is not in the normal
pattern during engine running.
I Harness or connectors
[The camshaft position sensor
(PHASE) circuit is open or shorted.]
I Camshaft position sensor (PHASE)
I Camshaft (Intake)
I Starter motor (Refer to SC section.)
I Starting system circuit (Refer to SC
section.)
I Dead (Weak) battery
DTC Confirmation Procedure
NFEC0948
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 bat-
tery voltage is more than 10.5V with ignition switch “ON”.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0340, P0345 CMP SENSOR (PHASE)
Component Description
EC-337
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