P0335
FA20 ENGINE CONTROL: SFI SYSTEM: P0335, P0336; Crankshaft Position Sensor "A" Circuit; 2013 MY FR-S [03/2012 -]
P0335 - Crankshaft Position Sensor "A" Circuit
P0336 - Crankshaft Position Sensor Range / Performance
DESCRIPTION
The crankshaft position sensor system consists of a No. 1 crankshaft position sensor plate and Magnetoresistive Element (MRE) type sensor. The crankshaft angle sensor plate is installed on the crankshaft. The crankshaft position sensor generates 30 signals per crankshaft revolution. The ECM uses the camshaft position signal to distinguish between the cylinders, and uses the crankshaft position signal to detect the crankshaft position and engine speed.
MONITOR DESCRIPTION
If there is no signal from the crankshaft position sensor despite the crankshaft revolving, the ECM interprets this as a malfunction of the sensor and the ECM illuminates the MIL and sets a DTC.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
P0335
P0336
TYPICAL MALFUNCTION THRESHOLDS
P0335
P0336
CONFIRMATION DRIVING PATTERN
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation) Reading and Clearing Diagnostic Trouble Codes.
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on.
6. Start the engine.
HINT
If the engine could not be started, crank engine for 10 seconds.
7. Idle the engine for 20 seconds or more.
8. Enter the following menus: Powertrain / Engine / Trouble Codes.
9. Read pending DTCs.
HINT
* If a pending DTC is output, the system is malfunctioning.
* If a pending DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
11. Input the DTC: P0335 or P0336.
12. Check the DTC judgment result.
HINT
* If the judgment result shows NORMAL, the system is normal.
* If the judgment result shows ABNORMAL, the system has a malfunction.
13. If the test result is INCOMPLETE or N/A and no DTC is output, perform a universal trip and check for permanent DTCs Reading and Clearing Diagnostic Trouble Codes.
HINT
* If a permanent DTC is output, the system is malfunctioning.
* If no permanent DTC is output, the system is normal.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT
* If no problem is found by this diagnostic troubleshooting procedure, check for problems by referring to the engine mechanical information.
* The engine speed can be checked by using the Techstream. To perform the check, follow the procedures below:
(1) Connect the Techstream to the DLC3.
(2) Start the engine.
(3) Turn the Techstream on.
(4) Enter the following menus: Powertrain / Engine / Data List / Engine Speed.
* The engine speed may be indicated as zero despite the engine running normally. This is caused by a lack of NE signals from the crankshaft position sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed if the crankshaft position sensor output voltage is insufficient.
* Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
PROCEDURE
1. READ VALUE USING TECHSTREAM (ENGINE SPEED)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Data List / Engine Speed.
(e) Start the engine.
(f) Read the values displayed on the Techstream while the engine is running.
OK:
Correct values are displayed.
Result
HINT
* To check the engine speed change, display the graph on the Techstream.
* If the engine does not start, check the engine speed while cranking.
* If the engine speed indicated on the Techstream remains zero (0), there may be an open or short in the Crankshaft Position sensor circuit.
B -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems
A -- Continue to next step.
2. INSPECT CRANKSHAFT POSITION SENSOR
(a) Inspect the crankshaft position sensor Testing and Inspection.
NG -- REPLACE CRANKSHAFT POSITION SENSOR Removal
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)
(a) Disconnect the ECM connector.
(b) Disconnect the crankshaft position sensor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for open):
Standard Resistance (Check for short):
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)
(a) Check the crankshaft position sensor installation.
OK:
Sensor is installed correctly.
NG -- SECURELY REINSTALL SENSOR Installation
OK -- Continue to next step.
5. INSPECT CRANKSHAFT (TEETH OF SENSOR PLATE)
(a) Check the teeth of the No. 1 crankshaft position sensor plate.
OK:
Sensor plate does not have any cracks or deformation.
NG -- REPLACE NO. 1 CRANKSHAFT POSITION SENSOR PLATE Removal
OK -- Continue to next step.
6. REPLACE CRANKSHAFT POSITION SENSOR
(a) Replace the crankshaft position sensor Removal.
NEXT -- Continue to next step.
7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0335 OR P0336)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Turn the ignition switch to ON and turn the tester on.
(g) Start the engine.
(h) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
(i) Enter the following menus: Powertrain / Engine / Trouble Codes.
(j) Read DTCs.
Result
HINT
If the engine does not start, replace the ECM.
B -- REPLACE ECM Removal
A -- END