3. Schematic:
1
2
EO01
EO01
12
28
KNOCK HI
KNOCK LO
Knock Sensor
Engine
Control
Module
FE02-5274b
4. Diagnostic Steps:
Note
Before carrying out this diagnosis step, observe the data list on scan tool and analyze the accuracy of the data, as
these will help with quick diagnosis.
Step 1
Initial Inspection
(a)
Check whether there is KS sensor physical damage.
(b)
Check whether KS sensor is installed correctly. Torque is set
too tight or too loose will trigger DTC codes.
(c)
Check KS sensor installation surface whether there are
glitches, casting flash and foreign matter.
(d)
Knock sensor must be kept away from hoses, brackets and
engine wires.
Are above mentioned parts normal?
No
Repair the faulty part. Go to step 9
Yes
Step 2
Read the engine data (engine speed) on the scan tool.
(a)
Connect scan tool to datalink connector.
2-722
Control System JL4G15-D
Engine
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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