- Crank position sensor output voltage fluctuates while crankshaft is revolving
- 34 crank position sensor signals per crankshaft revolution
| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001N837 |
| Model Year Start: 2021 | Model: Corolla | Prod Date Range: [04/2020 - 11/2022] |
| Title: 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: P0335,P0339; Crankshaft Position Sensor "A" Circuit; 2021 - 2023 MY Corolla [04/2020 - 11/2022] | ||
|
DTC |
P0335 |
Crankshaft Position Sensor "A" Circuit |
|
DTC |
P0339 |
Crankshaft Position Sensor "A" Circuit Intermittent |
DESCRIPTION
The crank position sensor system consists of a No. 1 crankshaft position sensor plate and a pickup coil.
The No. 1 crankshaft position sensor plate has 34 teeth and is installed on the crankshaft. The pickup coil is made of wound copper wire, an iron core and a magnet. The No. 1 crankshaft position sensor plate rotates and, as each tooth passes by the pickup coil, a pulse signal is created. The pickup coil generates 34 signals per engine speed. Based on these signals, the ECM calculates the crankshaft position and engine speed. Using these calculations, the fuel injection duration and ignition timing are controlled.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
Note |
|---|---|---|---|---|---|---|
|
P0335 |
Crankshaft Position Sensor "A" Circuit |
One of the following conditions is met (1 trip detection logic):
|
|
Comes on |
DTC stored |
DTC for Mexico Models - Applies |
|
P0339 |
Crankshaft Position Sensor "A" Circuit Intermittent |
Under conditions (a), (b) and (c), no crank position sensor signal to ECM for 0.05 seconds or more (1 trip detection logic): (a) Engine speed is 1000 rpm or higher. (b) Starter signal off. (c) 3 seconds or more have elapsed since starter signal switched from on to off. |
|
Does not come on |
DTC stored |
DTC for Mexico Models - Applies |
Reference: Inspection using an oscilloscope.
HINT:
- The correct waveform is as shown.
- Grounding failure of the shielded wire may cause a noisy waveform.
|
ECM Terminal Name |
Between NE+ and NE- |
|
Tester Range |
5 V/DIV., 20 ms./DIV. |
|
Condition |
Idling with warm engine |
MONITOR DESCRIPTION
If there is no signal from the crank position sensor despite the crankshaft rotating, the ECM interprets this as a malfunction of the sensor.
MONITOR STRATEGY
|
Related DTCs |
P0335: Crank position sensor verify pulse input P0335: Crank position sensor range check/rationality |
|
Required Sensors/Components (Main) |
Crank position sensor |
|
Required Sensors/Components (Related) |
Cam position sensor |
|
Frequency of Operation |
Continuous |
|
Duration |
-: Verify pulse input 0.016 seconds: Range check/rationality |
|
MIL Operation |
Immediate |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
P0335: Crank Position Sensor Range Check/Rationality
|
All of the following conditions are met |
- |
|
Crank position sensor |
Signal input |
|
Ignition switch |
ON |
|
Time after starter off to on |
3 seconds or more |
|
Cam position sensor circuit fail (P0340, P0342, P0343) |
Not detected |
|
Number of cam position sensor signal pulse |
6 times |
|
Battery voltage |
7 V or higher |
|
Minimum battery voltage while starter on |
Less than 11 V |
P0335: Crank Position Sensor Verify Pulse Input (Case 1)
|
Monitor runs whenever the following DTCs are not stored |
None |
|
All of the following conditions are met |
- |
|
Ignition switch |
ON |
|
Starter |
Off |
|
Time after starter on to off |
3 seconds or more |
|
Following condition is met |
3 seconds or more |
|
Engine speed |
600 rpm or higher |
P0335: Crank Position Sensor Verify Pulse Input (Case 2)
|
Monitor runs whenever the following DTCs are not stored |
None |
|
All of the following conditions are met |
- |
|
Ignition switch |
ON |
|
Starter |
On |
|
Minimum battery voltage while starter on |
Less than 11 V |
TYPICAL MALFUNCTION THRESHOLDS
P0335: Crank Position Sensor Range Check/Rationality
|
Number of crank position sensor signal pulse |
132 times or less, or 174 times or more |
P0335: Crank Position Sensor Verify Pulse Input (Case 1)
|
Crank position sensor signal |
No signal |
P0335: Crank Position Sensor Verify Pulse Input (Case 2)
|
Following condition is met |
4.7 seconds or more |
|
Crank position sensor signal |
No signal |
COMPONENT OPERATING RANGE
|
Crank position sensor |
|
CONFIRMATION DRIVING PATTERN
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for at least 30 seconds.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Start the engine.
- Idle the engine for 20 seconds or more.
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
-
Read the pending DTCs.
HINT:
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
- Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
- Input the DTC: P0335 or P0339.
-
Check the DTC judgment result.
Techstream Display
Description
NORMAL
- DTC judgment completed
- System normal
ABNORMAL
- DTC judgment completed
- System abnormal
INCOMPLETE
- DTC judgment not completed
- Perform driving pattern after confirming DTC enabling conditions
N/A
- Unable to perform DTC judgment
- Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
-
If the judgment result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs.
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![2020 - 2022 MY Corolla [03/2019 - 09/2022]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
HINT:
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
-
After performing the inspection procedure for the crank position sensor, if DTC P0335 is output again, check the following items related to the cam position sensor.
- Installation condition of the cam position sensor
- Installation condition of the camshaft
- Connection of the cam position sensor connector
- If no problem is found by this diagnostic troubleshooting procedure, check for problems by referring to the engine mechanical section.
-
The engine speed can be checked by using the Techstream. To perform the check, follow the procedures below:
- Connect the Techstream to the DLC3.
- Start the engine.
- Turn the Techstream on.
- Enter the following menus: Powertrain / Engine and ECT / 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 crank position sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed if the crank 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 and ECT / Data List / Engine Speed.
Powertrain > Engine and ECT > Data List
|
Tester Display |
|---|
|
Engine Speed |
(e) Start the engine.
(f) Read the values displayed on the Techstream while the engine is running.
Standard:
Correct values are displayed.
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 crank position sensor circuit.
| OK |
|
|
|
2. |
INSPECT CRANK POSITION SENSOR |
(a) Inspect the crank position sensor.
Click here
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (CRANK POSITION SENSOR - ECM) |
(a) Disconnect the crank position sensor connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
C12-1 (NE) - C77-114 (NE+) |
Always |
Below 1 Ω |
|
C12-2 (NE-) - C77-113 (NE-) |
Always |
Below 1 Ω |
|
C12-1 (NE) or C77-114 (NE+) - Body ground and other terminals |
Always |
10 kΩ or higher |
|
C12-2 (NE-) or C77-113 (NE-) - Body ground and other terminals |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK SENSOR INSTALLATION AND CONDUCT VISUAL INSPECTION (CRANK POSITION SENSOR) |
|
*a |
OK |
|
*b |
NG |
|
*c |
Clearance |
(a) Visually check the crank position sensor for damage.
(b) Check the crank position sensor installation condition.
OK:
The crank position sensor does not have any damage and is installed properly.
| NG |
|
|
|
5. |
INSPECT NO. 1 CRANKSHAFT POSITION SENSOR PLATE (TEETH OF SENSOR PLATE) |
(a) Inspect the teeth of the No. 1 crankshaft position sensor plate.
OK:
No. 1 crankshaft position sensor plate does not have any cracks or deformation.
| OK |
|
REPLACE ECM
|
| NG |
|
|
|