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.
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
TYPICAL MALFUNCTION THRESHOLDS
COMPONENT OPERATING RANGE
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
(a) Connect the intelligent tester to the DLC3.
(b) Start the engine.
(c) Turn the tester on.
(d) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / ENGINE SPD.
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)
(a) Disconnect the C22 Crankshaft Position (CKP) sensor connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance
HINT:
Terms "cold" and "hot" refer to the temperature of the coils. "Cold" means approximately -10 to 50°C (14 to 122°F). "Hot" means approximately 50 to 100°C (122 to 212°F).
(c) Reconnect the CKP sensor connector
2 CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)
(a) Disconnect the C22 CKP sensor connector.
(b) Disconnect the E11 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance :
(d) Reconnect the ECM connector.
(e) Reconnect the CKP sensor connector.
3 CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)
(a) Check the CKP sensor installation condition.
OK: Sensor is installed correctly.
4 CHECK CRANKSHAFT POSITION SENSOR PLATE (TEETH OF SENSOR PLATE)
(a) Check the teeth of the sensor plate.
OK: Sensor plate does not have any cracks or deformation.
REPLACE ECM (See page ES-498)
Reassembly
1. INSTALL FUEL PRESSURE REGULATOR ASSEMBLY
(a) Apply a light coat of gasoline or spindle oil to the 2
new O-rings, and install it to the fuel pressure
regulator.
(b) Apply a light coat of gasoline or spindle oil to the 2
O-rings again, and install the fuel pressure regulator
to the No. ...
On-vehicle inspection
1. INSPECT SIDE AIRBAG SENSOR (VEHICLE NOT
INVOLVED IN COLLISION)
Perform a diagnostic system check.
2. INSPECT SIDE AIRBAG SENSOR (VEHICLE
INVOLVED IN COLLISION AND AIRBAG HAS NOT
DEPLOYED)
Perform a diagnostic system check.
When the center pillar of the vehicle or its a ...
Precaution
1. Handling precautions on steering system
(a) Care must be taken when replacing parts. Incorrect
replacement could affect the performance of the
steering system and result in a driving hazard.
2. Handling precautions on srs airbag
system
(A) the vehicle is equipped with srs (supplemental
res ...