Geely EC718 2009 Workshop Manual page 234

2-152 Control System JL4G18-D
Yes
Diagnostic completed.
Step 18
5. Repair Instructions:
Replace the spark plug. Refer to
2.2.7.29 DTC P0321 P0322
1. DTC Descriptor:
DTC P0321
DTC P0322
CKP sensor signal provides ECM with current crankshaft speed and position. CKP sensor produces an alternating voltage with
changing amplitude and frequency. Frequency depends on the crankshaft speed and the AC output voltage depends on the CKP.
CKP sensor works with a fixed 58X variable reluctance rotor on the crankshaft. ECM calculates the ignition timing, injection timing
and controls knock ignition according to CKP sensor and camshaft position sensor input signal. CKP sensor is also used to detect
misfire and tachometer display. ECM uses CAN network to send the engine speed signal to the instrument panel.
CKP sensor signal passes through the CKP sensor harness connector EN26 terminal No.1 and No.2 to ECM harness connector
EN01 terminal No.47 and 46.
2. Conditions For Setting DTC and The Fault Location:
DTC Code DTC Detection Strategy
P0321 Hardware Circuit Checks
P0322 Hardware Circuit Checks
EC718/EC718RV EC715/EC715RV 10/2009
2.10.8.4 Spark Plug Replacement.
Speed Reference Point Fault
No CKP Sensor Pulse Signal (Open or Short Circuit)
Conditions For Setting The DTC
1. Frequently add teeth to adjust.
2. Frequently reduce teeth to adjust.
3. Speed sensor signal exists but
there is no reference.
4. Frequently lose the reference.
No speed sensor signal is monitored
after a certain number of phases.
Intermittent Fault. Refer to
No
Fault Check
(Control Strategy)
2.2.7.3 Intermittent
Fault Locations
1. The count of adding a tooth is
greater than 250 times.
2. The count of reducing a tooth is
greater than 250 times.
3. The count of no record of the teeth
missing is more than 6 times.
4. The count of losing the missing
teeth is greater than 2000 times.
1. Phase signal transition count is
greater than 18 times.
2. A low engine speed.
Engine