Engine Electrical System

Diagnostic trouble code: P0340 “Malfunction of phase angle sensor signal”
Item
No.
Operation procedure
Inspection
results
Follow-up
procedure
1
Connect the diagnostic tester and adaptor,
and turn the ignition switch to “ON”
position.
Proceed to next
step.
Yes Proceed to Step 4
2
Disconnect the connector of phase angle
sensor on the wiring harness, inspect with
multimeter to verify that the voltage
between 1# pin and 3# pin of this phase
angle sensor connector is about 12V.
No
Proceed to next
step.
Yes
Repair or replace
the wiring
harness. 3
Verify that the circuit between 3# pin of
phase angle sensor and 87# pin of the main
relay is open or short to ground;
Verify that 1# pin of phase angle sensor is
grounded properly.
No
Proceed to next
step.
Yes Proceed to Step 6
4
Verify that the voltage between 2# pin of
the phase angle sensor connector and the
negative grid of power supply is about 9.9V.
No
Proceed to next
step.
Yes
Repair or replace
the wiring
harness. 5
Verify that the circuit between 2# pin of the
phase angle sensor connector and 79# pin of
ECU is open, or is short to ground or power
supply.
No
Proceed to next
step.
Yes
Refer to diagnosis
help.
6
Verify that the signal panel of camshaft is in
good condition.
No
Replace the signal
panel.
E-42
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