Toyota Tundra. Manual — part 1559

Fig. 137: Identifying Terminals Of D3 Crankshaft Position Sensor Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Disconnect the D74 ECM connector.

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

Standard resistance

RESISTANCE SPECIFIED CONDITION

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go 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 (See INSTALLATION )

Fig. 138: Checking Crankshaft Position Sensor Installation

Tester Connection

Condition Specified Condition

D3-1 - D74-110 (NE+)

Always

Below 1 ohms

D3-2 - D74-111 (NE-)

Always

Below 1 ohms

D3-1 or D74-110 (NE+) - Body ground Always

10 kohms or higher

D3-2 or D74-111 (NE-) - Body ground

Always

10 kohms or higher

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: Go to Next Step

5. CHECK CRANKSHAFT POSITION SENSOR PLATE (TEETH OF SENSOR PLATE)

a. Check the teeth of the sensor plate.

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

NG: REPLACE CRANKSHAFT POSITION SENSOR PLATE (See REMOVAL )

OK: Go to Next Step

6. REPLACE CRANKSHAFT POSITION SENSOR

a. Replace the crankshaft position sensor (see INSTALLATION ).

7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0335, P0337, P0338 AND/OR P0339)

a. Connect the Techstream to the DLC3.

b. Turn the ignition switch to ON.

c. Turn the Techstream ON.

d. Clear DTCs (see DTC CHECK/CLEAR ).

e. Start the engine.

f. Enter the following menus: Powertrain/Engine and ECT/Trouble Codes.

g. Read DTCs.

Result

RESULT REFERENCE

HINT:

If the engine does not start, replace the ECM.

B: REPLACE ECM (See REMOVAL )

A: END

8. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)

a. Disconnect the D3 crankshaft position sensor connector.

Display (DTC Output)

Proceed to

No output

A

P0335, P0337, P0338 and/or P0339

B

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

Fig. 139: Identifying Terminals Of D3 Crankshaft Position Sensor Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Disconnect the D74 ECM connector.

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

Standard resistance

RESISTANCE SPECIFIED CONDITION

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE ECM (See REMOVAL )

DTC P0340 CAMSHAFT POSITION SENSOR CIRCUIT MALFUNCTION; DTC P0342 CAMSHAFT
POSITION SENSOR "A" CIRCUIT LOW INPUT (BANK 1 OR SINGLE SENSOR); DTC P0343
CAMSHAFT POSITION SENSOR "A" CIRCUIT HIGH INPUT (BANK 1 OR SINGLE SENSOR);
DTC P0345 CAMSHAFT POSITION SENSOR "A" CIRCUIT (BANK 2); DTC P0347 CAMSHAFT
POSITION SENSOR "A" CIRCUIT LOW INPUT (BANK 2); DTC P0348 CAMSHAFT POSITION
SENSOR "A" CIRCUIT HIGH INPUT (BANK 2)

DESCRIPTION

The intake camshaft's Variable Valve Timing (VVT) sensor (VV1, 2 signal) consists of a magnet and MRE
(Magnetic Resistance Element).

The intake camshaft has 3 teeth on its outer circumference. When the camshaft rotates, changes occur in the air
gaps between the teeth and MRE, which affects the magnetic field. As a result, the resistance of the MRE
material fluctuates. The VVT sensor converts the camshaft rotation data into pulse signals, uses the pulse
signals to determine the camshaft angle, and sends it to the ECM.

The crankshaft position sensor plate has 34 teeth. The pickup coil generates 34 signals for each engine
revolution. Based on a combination of the VVT signal and NE signal, the ECM detects the crankshaft angle.
Then the ECM uses this data to control fuel injection time and injection timing. Also, based on the NE signal,

Tester Connection

Condition Specified Condition

D3-3 - D74-66 (VCV2)

Always

Below 1 ohms

D3-3 or D74-66 (VCV2) - Body ground Always

10 kohms or higher

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

the ECM detects the engine speed.

DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE CHART

Reference: Inspection using an oscilloscope

Fig. 140: Identifying VV1, VV2 And NE Signal Waveform
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

DTC

DTC Detection Condition

Trouble Area

P0340
P0345

No VVT sensor signal to ECM
during engine running (1 trip
detection logic)



Open or short in VVT sensor
circuit for intake camshaft



VVT sensor for intake
camshaft



Intake camshaft



Jumped tooth of timing chain
for intake camshaft



ECM

P0342
P0347

Output voltage of VVT sensor less
than 0.3 V for 4 seconds (1 trip
detection logic)



Open or short in VVT sensor
circuit for intake camshaft



VVT sensor for intake
camshaft



Intake camshaft



Jumped tooth of timing chain
for intake camshaft



ECM

P0343
P0348

Output voltage of VVT sensor
more than 4.7 V for 4 seconds (1
trip detection logic)



Open or short in VVT sensor
for intake camshaft circuit



VVT sensor for intake
camshaft



Intake camshaft



Jumped tooth of timing chain
for intake camshaft



ECM

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra