Diagnosis Procedure
WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK KNOCK SENSOR GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect knock sensor harness connector and ECM harness connector.
- Check the continuity between knock sensor harness connector and ECM harness connector.
DTC
Knock sensor
ECM
Continuity
Bank
Connector
Terminal
Connector
Terminal
P0327, P0328
1
F211
2
F78
84
Existed
P0332, P0333
2
F210
2
- Also check harness for short to power.
Is the inspection result normal?
YES
GO TO 2.
NO
Repair or replace error-detected parts.
- CHECK ECM GROUND CIRCUIT
- Check the continuity between ECM harness connector and ground.
ECM
--
Continuity
Connector
Terminal
F78
2
Ground
Existed
7
F79
87
88
95
E32
199
201
204
- Also check harness for short to power.
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace error-detected parts.
- Check the continuity between ECM harness connector and ground.
- CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT
- Check the continuity between knock sensor harness connector and ECM harness connector.
DTC
Knock sensor
ECM
Continuity
Bank
Connector
Terminal
Connector
Terminal
P0327, P0328
1
F211
1
F78
8
Existed
P0332, P0333
2
F210
1
86
- Also check harness for short to power and short to ground.
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace error-detected parts.
- Check the continuity between knock sensor harness connector and ECM harness connector.
- CHECK KNOCK SENSOR
Refer to Component Inspection .
Is the inspection result normal?
YES
INSPECTION END
NO
Replace malfunctioning knock sensor. Refer to CYLINDER BLOCK .