Changan CS35 - Dtc P0327, P0328

3.1.13-184
CS35 2013.04
3.1.13-184Electronic Control System - ME7
DTC P0327, P0328
1. DTC Description
2. Possible Sources
3. Diagnosis Procedures
Fault Code Description Definition
P0327
Knock sensor signal circuit volt-
age is too low
Knock sensor is located on the cylinder body that
below the intake manifold. The AC signal voltage
generated by the knock sensor changes as the
vibration degree that occurred during the engine
running.
Engine control module adjusts the ignition timing
based on the amplitude and frequency of the knock
sensor signal.
ECM receives the signal of terminals 1, 2 on knock
sensor wiring harness connector E10 through termi-
nals 19, 20 on wiring harness connector E01.
P0328
Knock sensor signal circuit volt-
age is too high
Fault
Code
Test Tactics
Setting Conditions (Control
Strategy)
Fault
P0327
• Knock identification reference voltage
0.097 ~ 2.05 V
• 25 figures in succession
• Knock sensor open circuit
fault
• Knock sensor fault
•ECM fault
P0328
• Knock identification reference voltage
9 ~ 120 V
• 25 figures in succession
Test Conditions Details/Results/Actions
1. General inspection
A. Inspect knock sensor for physical damage.
B. Inspect knock sensor to see if the installation is
proper, the torque is too tight or too loose will all
lead to the set of DTC.
C. Inspect the installation surface of knock sensor for
burr, overlab or foreign body.
D. Knock sensor must be far away from hose, bracket
and engine circuit.
Is it normal?
Y
Go to step 2.
N
Repair the fault.
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