6E1-162 DRIVEABILITY AND EMISSIONS
block, the knock sensor may be responding to the
noise.
6. Any circuitry, that is suspected as causing the
complaint, should be thoroughly checked for
backed out terminals, improper mating, broken
locks, improperly formed or damaged terminals,
poor terminal to wiring connections or physical
damage to the wiring harness.
8. Checking the internal resistance of the knock
sensor verifies if the knock sensor or the wiring to
the knock sensor is OK.
DTC (Flash DTC = 16)
KS Sensor Disconnected Malfunction
Step Action Value(s) Yes No
1
Was the Powertrain On-Board Diagnostic (OBD) System
Check performed?
-
Go to Step 2
Go to
Powertrain
OBD System
Check
2
1. Start the engine.
2. Install a Scan Tool.
3. Clear the Diagnostic Trouble Codes.
4. Run the engine at slightly more than 10% throttle angle.
Does the Malfunction Indicator Lamp (MIL) illuminate?
-
Go to Step 4 Go to Step 3
3
1. Turn the ignition Switch ON, with engine OFF.
Does the Malfunction Indicator Lamp (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 action complete?
-
Go to Step 12
-
6
Check for a poor connection at the ECM connector,
Knock sensor signal circuit and repair as necessary.
Was a repair necessary?
-
Go to Step 12 Go to Step 7
7
Replace the EPROM or ECM.
Is the action complete? Note) Refer to 6E1-243.
-
Go to Step 12
-
8
1. Turn the ignition switch OFF.
2. Disconnect the ECM connectors at the ECM.
3. With a Digital Voltmeter (DVM) connected to ground,
measure the resistance of the knock sensor through
the knock sensor signal circuit.
Is the measured value within the specified value?
95K-105K
OHMS
Go to Step 6 Go to Step 9
9
Check the knock sensor electrical connector for a poor
connection and repair as necessary.
Was a repair necessary?
-
Go to Step 12 Go to Step 10
10
Check the knock sensor signal circuit for an open or a
short to ground or to voltage and repair as necessary.
Was a repair necessary?
-
Go to Step 12 Go to Step 11
11
Replace the Knock Sensor(KS).
Is the action complete?
-
Go to Step 12
-
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