DTC P0335 Crankshaft Position Sensor "A" Circuit
DTC P0339 Crankshaft Position Sensor "A" Circuit Intermittent
DESCRIPTION
The Crankshaft Position (CKP) sensor system consists of a CKP sensor plate and a pickup coil. The sensor plate has 34 teeth and is installed on the crankshaft. The pickup coil is made of an iron core and a magnet.
The sensor plate rotates as each tooth passes through the pickup coil, and a pulse signal is created. The pickup coil generates 34 signals per engine revolution. Based on these signals, the ECM calculates the crankshaft position and engine RPM. Using these calculations, the fuel injection time and ignition timing are controlled.
DTC No. |
DTC Detection Condition |
Trouble Area |
P0335 |
|
|
P0339 | Under conditions (a), (b) and (c), no CKP sensor signal
to ECM for 0.05 seconds or more (1 trip detection
logic):
|
|
Reference: Inspection using an oscilloscope
HINT:
MONITOR DESCRIPTION
If there is no signal from the CKP sensor despite the engine revolving, the ECM interprets this as a malfunction of the sensor.
If the malfunction is not repaired successfully, a DTC is set 10 seconds after the engine is next started.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
All:
Crankshaft Position Sensor Range Check during Cranking P0335:
Crankshaft Position Sensor Range Check during Engine Running P0335:
TYPICAL MALFUNCTION THRESHOLDS
Crankshaft Position Sensor Range Check during Cranking P0335:
Crankshaft Position Sensor Range Check during Engine Running P0335:
COMPONENT OPERATING RANGE
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
The engine speed may be indicated as zero despite the engine revolving normally. This is caused by a lack of NE signals from the Crankshaft Position (CKP) sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed, if the CKP sensor voltage output is insufficient.
1 INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)
Standard resistance
HINT: Terms "cold" and "hot" refer to the temperature of the coils. "Cold" means approximately -10 to 50C (14 to 122F). "Hot" means approximately 50 to 100C (122 to 212F).
2 CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)
Standard resistance : Check for open
Check for short
3 CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)
OK: Sensor is installed correctly.
4 CHECK CRANKSHAFT POSITION SENSOR PLATE (TEETH OF SENSOR PLATE)
OK: Sensor plate does not have any cracks or deformation
REPLACE ECM
Access monitor result
(A) select the following menus on the intelligent tester:
diagnosis, enhanced obdii, monitor info
and monitor result. The monitor status
appears after the component name.
INCMP: The component has not been monitored
yet.
PASS: The component is functioning normally.
FAIL: The component is ...
Back Sonar Sensor LH Circuit
DESCRIPTION
An ultrasonic sensor consists of a sensor portion that transmits and receives
ultrasonic waves and a preamplifier
that amplifies them. The ultrasonic sensor outputs the ultrasonic waves and
sends the received
signals to the clearance warning ECU.
WIRING DIAGRAM
INSPECTION PR ...
Mechanical system tests
1. PERFORM MECHANICAL SYSTEM TESTS
(a) Measure the stall speed.
The object of this test is to check the overall
performance of the transaxle and engine by
measuring the stall speeds in the D position.
NOTICE:
Driving test should be done on a paved road
(a nonskid road).
Per ...