Nissan Note [1772/1872] Dtc p0325 knock sensor ks

Nissan Note [1772/1872] Dtc p0325 knock sensor ks
EC-1772
[K9K]
DTC P0325 KNOCK SENSOR (KS)
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic Procedure
BBS00450
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body.
Refer to EC-1703, "
Ground Inspection" .
Body ground (1)
Primimg pump (2)
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2. CHECK KNOCK SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Disconnect knock sensor (1) harness connector.
Fuel rail (2)
2. Disconnect ECM harness connector.
3. Check harness continuity between knock sensor terminal 1 and
ECM terminal 45. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3. CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between knock sensor terminal 2 and ECM terminal 44.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM CONDITION DATA (DC Voltage)
41
Sensor ground
(Knock sensor shield circuit)
[Engine is running]
Idle speed
Approximately 0.2V
44 W Knock sensor
[Engine is running]
Idle speed
Approximately 0.3V
45 O
Sensor ground
(Knock sensor)
[Engine is running]
Warm-up condition
Idle speed
Approximately 0.3V
MBIB1520E
Continuity should exist.
MBIB1529E
Continuity should exist.

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