ENGINE CONTROLS 1F–147
DAEWOO M-150 BL2
DTC P0327 – Knock Sensor Circuit
Step Action Value(s) Yes No
1
Perform an Euro On-Board Diagnostic (EOBD II)
System Check.
Is the system check complete?
–
Go to Step 2
Go to
“On-Board
Diagnostic
System Check”
2
1. Start the engine.
2. Install a scan tool.
3. Clear the Diagnostic Trouble Codes (DTCs).
4. Operate the vehicle within the Freeze Frame
conditions and conditions for setting the DTC as
noted.
Does the Malfunction Indicator (MIL) illuminate?
–
Go to Step 4 Go to Step 3
3
1. Turn the ignition switch ON, with the engine OFF.
2. Review the Freeze Frame data and note the
parameters.
3. Operate the vehicle within the Freeze Frame
conditions and conditions for Setting The DTC as
noted.
Does the Malfunction Indicator (MIL) illuminate?
–
Go to Step 4 Go to Step 12
4
Listen to the engine while raising and lowering the
engine speed.
Is a knock or audible noise present?
–
Go to Step 5 Go to Step 6
5
Repair the mechanical engine problem or a loose
bracket or component.
Is the repair complete?
–
Go to Step 12
–
6
1. Turn the ignition switch to lock.
2. Disconnect the engine control module(ECM).
3. With a digital voltmeter (DVM) connected to
ground, measure the resistance of the knock
sensor through the knock sensor signal circuit,
terminal 50.
Is the measured value within the specified value? 90–110KΩ Go to Step 7 Go to Step 9
7
Check for a poor connection at the ECM connector,
knock sensor (KS) signal circuit and repair as
necessary.
Is a repair necessary?
–
Go to Step 12 Go to Step 8
8
Replace the engine control module(ECM).
Is the replacement complete?
–
Go to Step 12 Go to Step 10
9
Check the KS electrical connector for a poor
connection and repair an necessary.
Is a repair necessary?
–
Go to Step 12 Go to Step 10
10
Check the KS signal circuit for an open or a low
voltage or voltage and repair as necessary.
Is a repair necessary?
–
Go to Step 12 Go to Step 11
11
Replace the KS.
Is the replacement complete?
–
Go to Step 12
–
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