Dtc P0335 Crankshaft Position Sensor A Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT ENGINE SPEED SENSOR
CHECK HARNESS AND CONNECTOR (ECM - ENGINE SPEED SENSOR)
DTC P0335 Crankshaft Position Sensor "A" Circuit |
DESCRIPTION
The engine speed sensor in the engine control system contains a signal plate and a pickup coil for the NE signal. The NE signal plate has 56 teeth and is mounted in the injection or supply pump assembly. The NE signal sensor generates 56 signals for every 2 engine revolutions. The ECM detects the engine speed and the cam lift position of the injection or supply pump assembly. The ECM uses the TDC and NE signals for injection timing control. The NE signal is also used for injection volume control.DTC No.
| DTC Detection Condition
| Trouble Area
|
P0335
| No NE signal to ECM for 0.5 seconds or more at 680 rpm or more.
| - Open or short in engine speed sensor circuit
- Injection or supply pump assembly
- ECM
|
No NE signal to ECM for 2.0 seconds or more during cranking.
|
WIRING DIAGRAM
INSPECTION PROCEDURE
- HINT:
- Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
| 1.INSPECT ENGINE SPEED SENSOR |
Check the engine speed sensor installation.
Inspect the engine speed sensor (LandCruiser RM00000473G005X.html).
| 2.CHECK HARNESS AND CONNECTOR (ECM - ENGINE SPEED SENSOR) |
Disconnect the engine speed sensor connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
C103-2 - C162-27 (NE+)
| Always
| Below 1 Ω
|
C103-1 - C162-35 (NE-)
| Always
| Below 1 Ω
|
C103-2 or C162-27 (NE+) - Body ground
| Always
| 10 kΩ or higher
|
C103-1 or C162-35 (NE-) - Body ground
| Always
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
