Sfi System - P0339

Brand:

Toyota

Model Name:

4Runner GRN210 215 UZN210 215

Manual:

Repair Manual

Section:

2Uz-Fe Engine Control System

Title:

Sfi System

  1. Description

  2. Monitor description

  3. Monitor strategy

  4. Typical enabling conditions

  5. Typical malfunction thresholds

  6. Wiring diagram

  7. Inspection procedure

  8. Inspect crankshaft position sensor

  9. Check harness and connector (crankshaft position sensor - ecm)

  10. Check sensor installation (crankshaft position sensor)

  11. Check crankshaft position sensor plate (tooth of plate)

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 windings, an iron core and magnet. The sensor plate rotates and as each tooth passes through the pickup coil, a pulse signal is created. The pickup coil generates 32 signals for each 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
  1. No CKP position sensor signal to ECM during cranking (1 trip detection logic)
  2. No CKP sensor signal to ECM with engine at 450 rpm or more (1 trip detection logic)
  1. Open or short in Crankshaft Position (CKP) sensor circuit
  2. Crankshaft Position (CKP) sensor
  3. Signal plate (CKP sensor plate)
  4. ECM
P0339
No CKP sensor signal to ECM is input for 0.05 seconds or more, and conditions (a), (b) and (c) are met:
(a) 1,000 rpm or more
(b) Starter is OFF
(c) 3 seconds or more have elapsed after STA signal is switched from ON or OFF
  1. Open or short in CKP sensor circuit
  2. CKP sensor
  3. Signal plate (CKP sensor plate)
  4. ECM
  1. If no problem is found by this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system. 4Runner
    Reference: Inspect using an oscilloscope.
    The correct waveform is as shown.
    Tester Connection
    		Specified Condition
    VV1+ (E6-25) - VV1- (E6-24)
    		Correct waveform is as shown
    VV2+ (E6-18) - VV2- (E6-28)
    G2+ (E6-19) - G2- (E6-29)
    NE+ (E6-21) - NE- (E67-20)

MONITOR DESCRIPTION

If there is no signal from the Crankshaft Position (CKP) sensor even though the engine is revolving, the ECM interprets this as a malfunction of the sensor.

MONITOR STRATEGY


Related DTCs
Crankshaft position sensor range check or rationality
Required Sensors/Components
Crankshaft position (CKP) sensor
Required Sensors/Components
-
Frequency of Operation
Continuous
Duration
Case 1: 3 times
Case 2: 0.016 second
MIL Operation
Immediate
Sequence of Operation
None

TYPICAL ENABLING CONDITIONS


All:
The monitor will run whenever these DTCs are not present
None

Case 1:
Time after starter OFF to ON
0.3 seconds or more
Number of camshaft position sensor signal pulse
6 times
Battery voltage
7 V or more
Ignition switch
ON
CMP sensor circuit fail
Not detected

Case 2:
Starter
OFF
Engine RPM
450 rpm or more
Time after starter from ON to OFF
3 seconds or more

TYPICAL MALFUNCTION THRESHOLDS


Case 1:
Number of CKP sensor signal pulse
132 or less, or 174 or more

Case 2:
Engine speed signal
No signal for 0.016 second

WIRING DIAGRAM


If no problem is found by this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system. 4Runner


INSPECTION PROCEDURE

HINT:
  1. If no problem is found by this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system.
  2. Check the engine speed. The engine speed can be checked by using the intelligent tester. To check, follow the operation below:
    1. Connect the intelligent tester to the DLC3 with CAN VIM.
    2. Start the engine.
    3. Turn the tester ON.
    4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / ENGINE SPD.
  4. 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 output voltage is insufficient.
  5. Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air/fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.
1.INSPECT CRANKSHAFT POSITION SENSOR
  1. Disconnect the C4 Crankshaft Position (CKP) sensor connector. 4Runner

  2. Disconnect the C4 Crankshaft Position (CKP) sensor connector.

  1. Measure the resistance of the sensor.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		Cold
    		1,630 to 2,740 Ω
    1 - 2
    		Hot
    		2,065 to 3,225 Ω
    HINT:
    In the above section, the 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).

  1. Reconnect the crankshaft position sensor connector.



NGnext
REPLACE CRANKSHAFT POSITION SENSOR
OK
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2.CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)
  1. Disconnect the C4 crankshaft position sensor connector. 4Runner

  2. Disconnect the C4 crankshaft position sensor connector.

  1. Disconnect the E6 ECM connector.

  1. Measure the resistance between the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    Crankshaft position sensor (C1-1) - NE+ (E6-21)
    		Below 1 Ω
    Crankshaft position sensor (C4-2) - NE- (E6-20)
    Crankshaft position sensor (C1-1) or NE+ (E6-21) - Body ground
    		10 kΩ or higher
    Crankshaft position sensor (C4-2) or NE- (E6-20) - Body ground

  1. Reconnect the CKP sensor connector.

  1. Reconnect the ECM connector.



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REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
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3.CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)
  1. Check the sensor installation.OK:Sensor is installed correctly. 4Runner

  2. Check the sensor installation.

    OK:
    Sensor is installed correctly.


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SECURELY REINSTALL SENSOR
OK
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4.CHECK CRANKSHAFT POSITION SENSOR PLATE (TOOTH OF PLATE)

  1. Remove the crankshaft position sensor plate (Click here).

  1. Check the tooth of the signal plate.

    OK:
    Sensor plate does not have any cracks or deformation.


NGnext
REPLACE CRANKSHAFT POSITION SENSOR PLATE
OK
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REPLACE ECM