Brand:

Toyota

Model Name:

4Runner GRN210 215 UZN210 215

Manual:

Repair Manual

Section:

1Gr-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 (resistance)

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

  10. Check sensor installation (crankshaft position sensor)

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

DTC P0335 Crankshaft Position Sensor "A" Circuit

DTC P0339 Crankshaft Position Sensor "A" Circuit Intermittent


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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 and as each tooth passes through the pickup coil, 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 Conditions
Trouble Areas
P0335
  1. No CKP sensor signal to ECM while cranking (1 trip detection logic)
  2. No CKP sensor signal to ECM at engine speed of 600 rpm or more (1 trip detection logic)
  1. Open or short in CKP sensor circuit
  2. CKP sensor
  3. Sensor plate (CKP sensor plate)
  4. ECM
P0339
Under conditions (a), (b) and (c), no CKP sensor signal to ECM for 0.05 seconds or more (1 trip detection logic):
(a) Engine speed 1,000 rpm or more
(b) Starter signal OFF
(c) 3 seconds or more has lapsed since starter signal switched from ON to OFF
  1. Open or short in CKP sensor circuit
  2. CKP sensor
  3. Sensor plate (CKP sensor plate)
  4. ECM
Reference: Inspection using an oscilloscope
The correct waveform is shown on the illustration. 4Runner
HINT:
  1. The correct waveform is shown on the illustration.
  2. VV1+ and VV2+ stands for the VVT sensor signal, and NE+ stands for the CKP sensor signal.
    Items
    		Contents
    Terminals
    		VV1+ - VV1-
    VV2+ - VV2-
    NE+ - NE-
    Equipment Settings
    		5 V/Division, 20 ms/Division
    Conditions
    		Cranking or idling

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


Related DTCs
P0335: Crankshaft position sensor range check or rationality
Required Sensors / Components (Main)
Crankshaft Position sensor
Required Sensors / Components (Related)
-
Frequency of Operation
Continuous
Duration
Case 1: 0.016 seconds
Case 2: 3 times
MIL Operation
Immediate
Sequence of Operation
None

TYPICAL ENABLING CONDITIONS


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

Case 1:
Engine RPM
600 rpm or more
Starter
OFF
Time after starter ON to OFF
3 seconds or more

Case 2:
Time after starter ON to OFF
0.3 seconds or more
Number of camshaft position sensor signal pulse
6 or more
Ignition switch
ON
Battery voltage
7 V or more

TYPICAL MALFUNCTION THRESHOLDS


Case 1:
Engine speed signal
No signal for 0.016 seconds

Case 2:
Number of crankshaft position sensor signal pulse
132 or less, or 174 or more

WIRING DIAGRAM


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


INSPECTION PROCEDURE

HINT:
  1. If no problem is found by this diagnostic troubleshooting procedure, troubleshoot the engine mechanical systems.
  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.
    2. Start the engine.
    3. Turn the tester on.
    4. 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.
  4. 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 (RESISTANCE)
  1. Disconnect the C4 Crankshaft Position (CKP) sensor connector. 4Runner

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

  1. Measure the resistance between terminals 1 and 2.

    Standard resistance:
    Tester Connections
    		Specified Conditions
    1 - 2
    		1,630 Ω to 2,740 Ω at cold
    1 - 2
    		2,065 Ω to 3,225 Ω at hot
    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).

  1. Reconnect the CKP sensor connector.



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

  2. Disconnect the C4 CKP sensor connector.

  1. Disconnect the E6 ECM connector.

  1. Measure the resistance.

    Standard resistance (Check for open):
    Tester Connections
    		Specified Conditions
    NE+ (C4-1) - NE+ (E6-21)
    		Below 1 Ω
    NE- (C4-2) - NE- (E6-20)
    		Below 1 Ω
    Standard resistance (Check for short):
    Tester Connections
    		Specified Conditions
    NE+ (C4-1) or NE+ (E6-21) - Body ground
    		10 kΩ or higher
    NE- (C4-2) or NE- (E6-20) - Body ground
    		10 kΩ or higher

  1. Reconnect the ECM connector.

  1. Reconnect the CKP sensor 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 CKP sensor installation.OK:Sensor is installed correctly. 4Runner

  2. Check the CKP sensor installation.

    OK:
    Sensor is installed correctly.


NGnext
REPAIR OR REPLACE CRANKSHAFT POSITION SENSOR
OK
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4.CHECK CRANKSHAFT POSITION SENSOR PLATE (TEETH OF SENSOR PLATE)

  1. Check the teeth of the sensor plate.

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


NGnext
REPAIR OR REPLACE CRANKSHAFT POSITION SENSOR PLATE
OK
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REPLACE ECM