2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 451
NO - GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F81, F221
- Harness for open or short between knock sensor and ECM
- Repair open circuit or short to power in harness or connectors.
4.CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between knock sensor harness connector and ECM harness connector.
2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES - GO TO 6.
NO - GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F81, F221
- Harness for open or short between knock sensor and ECM
- Repair open circuit, short to ground or short to power in harness or connectors.
6.CHECK KNOCK SENSOR
See: P Code Charts/P0327.
Is the inspection result normal?
YES - GO TO 7.
NO - Replace malfunctioning knock sensor.
7.CHECK INTERMITTENT INCIDENT
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble
Diagnosis For Intermittent Incident/Description.
- INSPECTION END
Component Inspection
1.CHECK KNOCK SENSOR
1. Turn ignition switch OFF.
2. Disconnect knock sensor harness connector.
3. Check resistance between knock sensor terminals as per the following.
NOTE:
It is necessary to use an ohmmeter which can measure more than 10 MOhm(s).
Is the inspection result normal?
YES - INSPECTION END
NO - Replace malfunctioning knock sensor.
P0333
P0327, P0328, P0332, P0333 KS
