DTC P0327 / P0328: Knock Sensor Circuit Low / High - Suzuki Jimny Workshop Manual
1A
DTC P0327 / P0328: Knock Sensor Circuit Low / High
Wiring Diagram
| 1. | Knock sensor | 2. | ECM |
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
DTC will be set when all of the following conditions are detected for 0.5 seconds continuously.
DTC P0327:
•
Engine is running
(1 driving cycle detection logic)
• Voltage of knock sensor is less than 1.23 V DTC P0328:
•
Engine is running
(1 driving cycle detection logic)
• Voltage of knock sensor is 3.91 V or more |
•
Open or short in knock sensor circuit
• Knock sensor • ECM |
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 10 sec.
4)
Check DTC by using scan tool.
DTC Troubleshooting
| Step | Action | YES | NO |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
Knock sensor circuit check
1)
Measure voltage between “E119-9” terminal of ECM connector and vehicle body ground with engine running.
Is voltage within 1.23 – 3.91 V?
|
Intermittent trouble. Check for intermittent referring to
Intermittent and Poor Connection Inspection
. If OK, substitute a known-good ECM and recheck.
|
Go to Step 3.
|
| 3 |
Knock sensor circuit for open check
1)
Disconnect connector from knock sensor with ignition switch turned OFF.
2)
Turn ON ignition switch, measure voltage between “RED” wire of knock sensor connector and engine ground.
Is voltage 4 – 6 V?
|
Go to Step 6.
|
Go to Step 4.
|
| 4 |
Knock sensor circuit for open check
1)
Turn ON ignition switch, measure voltage between “E119-9” terminal of ECM connector and engine ground.
Is voltage 4 – 6 V?
|
“RED” wire in open circuit.
|
Go to Step 5.
|
| 5 |
Knock sensor circuit for short check
1)
Disconnect connectors from ECM with ignition switch turned OFF.
2)
Measure resistance between “E119-9” terminal of ECM connector and vehicle body ground.
Is resistance infinity?
|
Go to Step 6.
|
“RED” wire in shorted to ground circuit. If wire is OK, substitute a known-good ECM and recheck.
|
| 6 |
Knock sensor circuit for short check
1)
Turn ON ignition switch, measure voltage between “E119-9” terminal of ECM connector and vehicle body ground.
Is voltage 0 V?
|
Go to Step 7.
|
“RED” wire in shorted to other circuit.
|
| 7 |
Knock sensor circuit for high resistance check
1)
Measure resistance between “E119-9” terminal of ECM connector and “RED” wire terminal of knock sensor harness connector.
Is resistance below 5 Ω?
|
Faulty knock sensor.
|
“RED” wire in high resistance circuit.
|
NOTE:
Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.