Toyota Avalon Service & Repair Manual: Crankshaft Position Sensor "A" Signal Stuck in Range (P03352A,P033531)

Toyota Avalon Service & Repair Manual / Engine / A25a-fxs Engine Control / Sfi System / Crankshaft Position Sensor "A" Signal Stuck in Range (P03352A,P033531)

DESCRIPTION

Refer to DTC P033511.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P03352A

Crankshaft Position Sensor "A" Signal Stuck in Range

No crankshaft position sensor signal to the ECM while the engine running (1 trip detection logic).

  • Open or short in crankshaft position sensor circuit
  • Crankshaft position sensor
  • Crankshaft position sensor plate
  • ECM

Comes on

DTC stored

SAE Code: P0335

P033531

Crankshaft Position Sensor "A" No Signal

The engine stalls and the engine speed signal value decreases rapidly (1 trip detection logic).

  • Open or short in crankshaft position sensor circuit
  • Crankshaft position sensor
  • Crankshaft position sensor plate
  • ECM

Comes on

DTC stored

SAE Code: P0335

  • Reference: Inspection using an oscilloscope.

    Click here

MONITOR DESCRIPTION

A DTC will be stored if any of the following occurs:

  • The crankshaft position sensor signal (NE signal) is not received by the ECM when the engine is running.
  • The engine stalls and the engine speed signal value decreases rapidly (under normal conditions the engine speed will decrease gradually).

MONITOR STRATEGY

Related DTCs

P0335: Crankshaft position sensor verify pulse input

Required Sensors/Components (Main)

Crankshaft position sensor

Required Sensors/Components (Related)

Camshaft position sensor

Frequency of Operation

Continuous

Duration

1.85 seconds: Case 1

-: Case 2

MIL Operation

Immediate

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

All

Both of the following conditions are met

-

Hybrid control module judge

Engine running

Lost communication with hybrid vehicle control ECU assembly (U0293)

Not detected

P0335 (Case 1)

All of the following conditions are met

-

Auxiliary battery voltage

Higher than 6 V

Crankshaft position sensor voltage

0.3 to 4.7 V

Power switch

On (IG)

P0335 (Case 2)

All of the following conditions are met

-

Auxiliary battery voltage

Higher than 6 V

Crankshaft position sensor voltage

0.3 to 4.7 V

Starter

Off

Engine speed (Top dead center)

600 rpm or higher

Engine speed (30°CA)

600 rpm or higher

TYPICAL MALFUNCTION THRESHOLDS

P0335:

Crankshaft position sensor signal

No signal

CONFIRMATION DRIVING PATTERN

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

    Click here

  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

    Click here

  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG).
  3. Turn the Techstream on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the power switch off and wait for at least 30 seconds.
  6. Turn the power switch on (IG).
  7. Turn the Techstream on.
  8. Put the engine in Inspection Mode (Maintenance Mode).

    Click here

  9. Start the engine.
  10. Idle the engine for 20 seconds or more [A].
  11. Enter the following menus: Powertrain / Engine / Trouble Codes [B].
  12. 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.
  13. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  14. Input the DTC: P03352A or P033531.
  15. 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

    HINT:

    • If the judgment result is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system has a malfunction.
    • If the judgment result is INCOMPLETE, perform steps [A] through [B] again.
    • [A] to [B]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

    • When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

WIRING DIAGRAM

Refer to DTC P033511.

Click here

CAUTION / NOTICE / HINT

NOTICE:

  • Vehicle Control History may be stored in the hybrid vehicle control ECU assembly if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the Freeze Frame Data and Vehicle Control History can be useful for troubleshooting.

    Click here

    (Select Powertrain in Health Check and then check the time stamp data.)

    Click here

  • If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU assembly, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

    Click here

HINT:

  • 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:
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Put the engine in Inspection Mode (Maintenance Mode).

      Click here

    5. Start the engine.
    6. 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 power switch on (IG).

(c) Turn the Techstream on.

(d) Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility

Tester Display

Inspection Mode

(e) Start the engine.

(f) Enter the following menus: Powertrain / Engine / Data List / Engine Speed.

Powertrain > Engine > Data List

Tester Display

Engine Speed

(g) 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 at zero (0), there may be an open or short in the crankshaft position sensor circuit.
OK

CHECK FOR INTERMITTENT PROBLEMS

NG

2.

CHECK HARNESS AND CONNECTOR

*a

Front view of wire harness connector

(to Crankshaft Position Sensor)

HINT:

Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.

(a) Disconnect the crankshaft position sensor connector.

(b) Turn the power switch on (IG).

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

U3-3 (VCNE) - Body ground

Power switch on (IG)

4.5 to 5.5 V

U3-1 (NE+) - Body ground

Power switch on (IG)

3.0 to 5.0 V

(d) Turn the power switch off and wait for at least 30 seconds.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

U3-3 (VCNE) - U3-1 (NE+)

Power switch off

1.425 to 1.575 kΩ

U3-2 (NE-) - Body ground

Always

Below 1 Ω

NG

GO TO STEP 5

OK

3.

CHECK SENSOR INSTALLATION AND CONDUCT VISUAL INSPECTION (CRANKSHAFT POSITION SENSOR)

*a

Clearance

(a) Visually check the crankshaft position sensor for damage.

(b) Check the crankshaft position sensor installation condition.

OK:

The crankshaft position sensor does not have any damage and is installed properly.

NG

SECURELY REINSTALL CRANKSHAFT POSITION SENSOR

OK

4.

INSPECT NO.1 CRANKSHAFT POSITION SENSOR PLATE (TEETH OF CRANKSHAFT POSITION 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 CRANKSHAFT POSITION SENSOR

NG

REPLACE NO. 1 CRANKSHAFT POSITION SENSOR PLATE

5.

CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)

(a) Disconnect the crankshaft 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

U3-3 (VCNE) - C55-116 (VCNE)

Always

Below 1 Ω

U3-2 (NE-) - C55-115 (NE-)

Always

Below 1 Ω

U3-1 (NE+) - C55-93 (NE+)

Always

Below 1 Ω

U3-3 (VCNE) or C55-116 (VCNE) - Body ground and other terminals

Always

10 kΩ or higher

U3-2 (NE-) or C55-115 (NE-) - Body ground and other terminals

Always

10 kΩ or higher

U3-1 (NE+) or C55-93 (NE+) - Body ground and other terminals

Always

10 kΩ or higher

OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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    Toyota Avalon Service & Repair Manual > Sfi System: Crankshaft Position Sensor "A" Circuit Intermittent (P03351F,P03352A,P033531)
    DESCRIPTION Refer to DTC P033511. Click here DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note P03351F Crankshaft Position Sensor "A" Circuit Intermittent Under conditions (a), (b) and (c), no crankshaft position sensor signal to ECM for 0.05 seconds or more (1 trip detecti ...

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