Dtc P0327 / P0328: Knock Sensor Circuit Low / High - Suzuki 2006 SX4 Service Manual

DTC P0327 / P0328: Knock Sensor Circuit Low / High

Wiring Diagram
1
15 14 13 12 11
30 29 28 27 26
45 44 43 42 41
60 59 58 57 56
A1: Knock sensor signal circuit
DTC Detecting Condition and Trouble Area
DTC detecting condition
DTC P0327:
Output voltage of knock sensor is lower than 1.23 V for 5 sec.
(1 driving cycle detection logic)
DTC P0328:
Output voltage of knock sensor is higher than 3.91 V for 5 sec.
(1 driving cycle detection logic)
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC pending DTC and freeze frame data by using scan tool.
3) Start engine and run it for 1 minute.
4) Check DTC.
DTC Troubleshooting
Step
1 Was "Engine and Emission Control System Check"
performed?
2 Knock sensor circuit voltage check
1) Turn ignition switch OFF position.
2) Disconnect connector from knock sensor.
3) Check for proper terminal connection to knock sensor
and ECM connectors.
4) If connections are OK, turn ignition switch to ON
position.
5) Check that circuit voltage is 5 V between knock sensor
signal circuit of knock sensor connector and vehicle
body ground.
Is it in good condition?
E01
10 9 8 7 6 5 4 3
25 24 23 22 21 20 19 18
40 39 38 37 36 35 34 33
55 54 53 52 51 50 49 48
Action
Engine General Information and Diagnosis:
A1
RED
2 1 15 14 13 12 11
17 16 30 29 28 27 26
32 31 45 44 43 42 41
47 46 60 59 58 57 56
1. Knock sensor
• Knock sensor and/or its circuit
• ECM
Go to Step 2.
Replace knock sensor. Go to Step 3.
2
5V
C01-56
C01
10 9 8 7 6 5 4 3
25 24 23 22 21 20 19 18
40 39 38 37 36 35 34 33
55 54 53 52 51 50 49 48
2. ECM
Trouble area
Yes
Go to "Engine and
Emission Control
System Check".
1A-87
S6RW0C1104036
2 1
17 16
32 31
47 46
I7RW01110055-02
No