-
Missing VVT sensor signal despite crankshaft position sensor inputs normal at engine speed of 600 rpm or more
(1 trip detection logic)
-
No VVT sensor signal to ECM during cranking
(2 trip detection logic)
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VICG |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 08/2016] |
| Title: 2GR-FE (ENGINE CONTROL): SFI SYSTEM: P0340,P0342,P0343,P0345,P0347,P0348; Camshaft Position Sensor Circuit; 2016 MY Sienna [12/2015 - 08/2016] | ||
|
DTC |
P0340 |
Camshaft Position Sensor Circuit |
|
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 VVT sensor (for intake side) (VV1, VV2 signal) consists of a magnet and MRE (Magneto Resistive Element).
The camshaft timing gear assembly has a sensor plate with 3 teeth on its outer circumference. When the gear rotates, changes occur in the air gaps between the sensor plate and MRE, which affects the magnetic field. As a result, the resistance of the MRE material fluctuates. The VVT sensor converts the gear rotation data to pulse signals, uses the pulse signals to determine the camshaft angle, and sends it to the ECM.
The crank angle sensor plate has 34 teeth. The pickup coil generates 34 signals for each engine rotation. Based on combination of the VVT signals 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, the ECM detects the engine speed.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P0340 |
Either of the following conditions is met: |
|
|
P0342 P0347 |
Output voltage of VVT sensor is less than 0.3 V for 4 seconds (1 trip detection logic) |
|
|
P0343 P0348 |
Output voltage of VVT sensor is more than 4.7 V for 4 seconds (1 trip detection logic) |
|
|
P0345 |
No VVT sensor signal at engine speed of 600 rpm or more (1 trip detection logic) |
|
-
Reference: Inspection using an oscilloscope
HINT:
- The correct waveform is as shown.
- VV1+ and VV2+ stand for the VVT sensor (for intake side) signal, and NE+ stands for the crankshaft position sensor signal.
Item
Content
ECM Terminal Names
Between VV1+ and VV1-, VV2+ and VV2-
Between NE+ and NE-
Tester Range
5 V/DIV.
20 ms./DIV.
Condition
Idling with warm engine
MONITOR DESCRIPTION
If no signal is transmitted by the VVT sensor (for intake side) despite the engine revolving, or the rotations of the camshaft and the crankshaft are not synchronized, the ECM interprets this as a malfunction of the sensor.
MONITOR STRATEGY
|
Related DTCs |
P0340: VVT sensor (for intake side of bank 1) verify pulse input P0342: VVT sensor (for intake side of bank 1) range check (low voltage) P0343: VVT sensor (for intake side of bank 1) range check (high voltage) P0345: VVT sensor (for intake side of bank 2) verify pulse input P0347: VVT sensor (for intake side of bank 2) range check (low voltage) P0348: VVT sensor (for intake side of bank 2) range check (high voltage) |
|
Required Sensors / Components (Main) |
VVT sensor (for intake side of bank 1, 2) |
|
Required Sensors / Components (Related) |
Crankshaft position sensor |
|
Frequency of Operation |
Continuous |
|
Duration |
4 seconds: P0340 (VVT sensor (for intake side of bank 1) verify pulse input (case 2)) P0342 and P0347 (VVT sensor (for intake side of bank 1, 2) range check (low voltage)) P0343 and P0348 (VVT sensor (for intake side of bank 1, 2) range check (high voltage)) 5 seconds: P0340 (VVT sensor (for intake side of bank 1) verify pulse input (case 1)) P0345 (VVT sensor (for intake side of bank 2) verify pulse input) |
|
MIL Operation |
2 driving cycles: P0340 (VVT sensor (bank 1) verify pulse input (case 2)) Immediately: Others |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
All
|
Monitor runs whenever following DTCs are not present |
None |
P0340: VVT Sensor (for intake side of bank 1) Verify Pulse Input (Case 1)
|
Engine speed |
600 rpm or more |
|
Starter |
Off |
|
VVT system misalignment |
Not detected |
|
VVT sensor range check fail (P0342, P0343) |
Not detected |
|
VVT sensor voltage |
0.3 V or higher, and 4.7 V or less |
P0340: VVT Sensor (for intake side of bank 1) Verify Pulse Input (Case 2)
|
Starter |
After off to ON timing |
|
Minimal battery voltage while starter ON |
Below 11 V |
P0342, P0343: VVT Sensor (for intake side of bank 1) Range Check
|
Starter |
Off |
|
Ignition switch |
ON |
|
Time after ignition switch off to ON |
2 seconds or more |
|
VVT sensor verify pulse input fail (P0340) |
Not detected |
|
Battery voltage |
8 V or more |
P0345: VVT Sensor (for intake side of bank 2) Verify Pulse Input
|
Engine speed |
600 rpm or more |
|
Starter |
Off |
|
VVT sensor range check fail (P0342, P0343, P0347, P0348) |
Not detected |
|
VVT sensor voltage |
0.3 V or higher, and 4.7 V or less |
|
Battery voltage |
8 V or higher |
|
Ignition switch |
ON |
P0347, P0348: VVT Sensor (for intake side of bank 2) Range Check
|
Starter |
Off |
|
Ignition switch |
ON |
|
Time after ignition switch off to ON |
2 seconds or more |
|
VVT sensor verify pulse input fail (P0340, P0345) |
Not detected |
|
Battery voltage |
8 V or higher |
TYPICAL MALFUNCTION THRESHOLDS
P0340: VVT Sensor (for intake side of bank 1) Verify Pulse Input (Case 1)
|
Camshaft position and crankshaft position alignment |
Misalignment |
|
VVT sensor signal |
No signal |
P0340: VVT Sensor (for intake side of bank 1) Verify Pulse Input (Case 2)
|
VVT sensor signal |
No signal |
P0342, P0347: VVT Sensor (for intake side of bank1, 2) Range Check (Low Voltage)
|
VVT sensor voltage |
Less than 0.3 V |
P0343, P0348: VVT Sensor (for intake side of bank1, 2) Range Check (High voltage)
|
VVT sensor voltage |
Higher than 4.7 V |
P0345: VVT Sensor (for intake side of bank 2) Verify Pulse Input
|
VVT sensor signal |
No signal |
COMPONENT OPERATING RANGE
|
VVT sensor voltage |
0.3 V or higher, and 4.7 V or less |
CONFIRMATION DRIVING PATTERN
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON and turn the Techstream on.
-
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) (See page
![2016 MY Sienna [12/2015 - 08/2016]; 2GR-FE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
).
- Turn the ignition switch off and wait for at least 30 seconds.
- Turn the ignition switch to ON and turn the Techstream on.
- Start the engine.
- Idle the engine for 10 seconds or more [A].
- Enter the following menus: Powertrain / Engine / Trouble Codes [B].
-
Read 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 / Utility / All Readiness.
- Input the DTC: P0340.
-
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 INCOMPLETE or N/A, perform steps [A] through [B] again.
-
If no pending DTC is output, perform a universal trip and check for permanent DTCs (See page
).
HINT:
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
WIRING DIAGRAM
Refer to DTC P0335 (See page
).
CAUTION / NOTICE / HINT
HINT:
- 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.
- If no problem is found by this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system.
-
Bank 1 refers to the bank that includes the No. 1 cylinder*.
*: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
- Bank 2 refers to the bank that does not include the No. 1 cylinder.
PROCEDURE
|
1. |
CHECK VVT SENSOR (FOR INTAKE SIDE) (SENSOR POWER SOURCE) |
(a) Disconnect the VVT sensor (for intake side) connectors.
(b) Turn the ignition switch to ON.
|
(c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
Text in Illustration
|
|
| NG |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR INTAKE SIDE) - ECM) |
(a) Disconnect the B16 and B17 VVT sensor (for intake side) connectors.
(b) Disconnect the B1 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
B16-1 (VVR+) - B1-90 (VV1+) |
Always |
Below 1 Ω |
|
B16-2 (VVR-) - B1-89 (VV1-) |
Always |
Below 1 Ω |
|
B17-1 (VVL+) - B1-87 (VV2+) |
Always |
Below 1 Ω |
|
B17-2 (VVL-) - B1-88 (VV2-) |
Always |
Below 1 Ω |
|
B16-1 (VVR+) or B1-90 (VV1+) - Body ground |
Always |
10 kΩ or higher |
|
B16-2 (VVR-) or B1-89 (VV1-) - Body ground |
Always |
10 kΩ or higher |
|
B17-1 (VVL+) or B1-87 (VV2+) - Body ground |
Always |
10 kΩ or higher |
|
B17-2 (VVL-) or B1-88 (VV2-) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK SENSOR INSTALLATION (VVT SENSOR (FOR INTAKE SIDE)) |
|
(a) Check the VVT sensor (for intake side) installation. OK: Sensor is installed correctly. |
|
| NG |
|
|
|
4. |
CHECK CAMSHAFT TIMING GEAR ASSEMBLY (TEETH OF PLATE) |
(a) Check the teeth of the sensor plate.
OK:
Sensor plate teeth do not have any cracks or deformation.
HINT:
Perform "Inspection After Repair" after replacing the camshaft timing gear assembly (See page
).
| NG |
|
|
|
5. |
CHECK VALVE TIMING (CHECK FOR LOOSE OR JUMPED TEETH ON TIMING CHAIN) |
| NG |
|
|
|
6. |
REPLACE VVT SENSOR (FOR INTAKE SIDE) |
(a) Replace the VVT sensor (for intake side) (See page
).
|
|
7. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P0340, P0342, P0343, P0345, P0347 AND/OR P0348) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs (See page
).
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Turn the ignition switch to ON and turn the Techstream on.
(g) Start the engine and warm it up.
(h) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
(i) Enter the following menus: Powertrain / Engine / Utility / All Readiness.
(j) Input the P0340, P0342, P0343, P0345, P0347, or P0348.
(k) Check the DTC judgment result.
Result
|
Result |
Proceed to |
|---|---|
|
NORMAL (DTC is not output) |
A |
|
ABNORMAL (DTC P0340, P0342, P0343, P0345, P0347, or P0348 is output) |
B |
HINT:
If the engine does not start, replace the ECM.
| A |
|
END |
| B |
|
|
8. |
CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR INTAKE SIDE) - ECM) |
(a) Disconnect the B16 and B17 VVT sensor (for intake side) connector.
(b) Disconnect the B1 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
B16-3 (VC) - B1-67 (VCV1) |
Always |
Below 1 Ω |
|
B17-3 (VC) - B1-66 (VCV2) |
Always |
Below 1 Ω |
|
B16-3 (VC) or B1-67 (VCV1) - Body ground |
Always |
10 kΩ or higher |
|
B17-3 (VC) or B1-66 (VCV2) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|