-
Input voltage to ECM remains at less than 0.3 V, or more than 4.7 V for more than 4 seconds when 2 or more seconds have elapsed after turning ignition switch to ON
(1 trip detection logic)
-
No VVT sensor signal to ECM during cranking
(2 trip detection logic)
| Last Modified: 11-29-2007 | 1.6 C | |
| Service Category: Engine/Hybrid System | Section: Engine Control | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000000YTB02XX |
| Title: 3UR-FE ENGINE CONTROL: SFI SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
DTC |
P0365 |
Camshaft Position Sensor "B" Circuit (Bank 1) |
|
DTC |
P0367 |
Camshaft Position Sensor "B" Circuit Low Input (Bank 1) |
|
DTC |
P0368 |
Camshaft Position Sensor "B" Circuit High Input (Bank 1) |
|
DTC |
P0390 |
Camshaft Position Sensor "B" Circuit (Bank 2) |
|
DTC |
P0392 |
Camshaft Position Sensor "B" Circuit Low Input (Bank 2) |
|
DTC |
P0393 |
Camshaft Position Sensor "B" Circuit High Input (Bank 2) |
DESCRIPTION
The exhaust camshaft's Variable Valve Timing (VVT) sensor (EV1, 2 signal) consists of a magnet and MRE (Magnetic Resistance Element).
The exhaust camshaft has a sensor plate with 3 teeth on its outer circumference. When the exhaust camshaft rotates, changes occur in the air gaps between the 3 teeth and MRE, which affects the magnet. As a result, the resistance of the MRE material fluctuates. The VVT sensor converts the exhaust camshaft rotation data into pulse signals, uses the pulse signals to determine the camshaft angle, and sends it to the ECM.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P0365 P0390 |
When either condition below is met: |
|
|
P0367 P0392 |
Output voltage of VVT sensor less than 0.3 V 4 seconds (1 trip detection logic) |
|
|
P0368 P0393 |
Output voltage of VVT sensor more than 4.7 V 4 seconds (1 trip detection logic) |
|
Reference: Inspection using an oscilloscope
Standard:
|
Tester Connection |
Tool Setting |
Condition |
Specified Condition |
|---|---|---|---|
|
D56-110 (NE+) - D56-111 (NE-) |
5 V/DIV. 20 msec./DIV. |
Cranking or idling |
The correct waveform is as shown |
|
D56-69 (EV1+) - D56-68 (EV1-) |
5 V/DIV. 20 msec./DIV. |
Cranking or idling |
The correct waveform is as shown |
|
D56-64 (EV2+) - D56-65 (EV2-) |
5 V/DIV. 20 msec./DIV. |
Cranking or idling |
The correct waveform is as shown |
HINT:
EV1+ and EV2+ stand for the VVT sensor signal, and NE+ stands for the CKP sensor signal.
MONITOR DESCRIPTION
If no signal is transmitted by the VVT sensor 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 |
P0365: VVT sensor (for Bank 1) open/short P0365: VVT position/Crankshaft position misalignment (for Bank 1) P0367: VVT position sensor (for Bank 1) range check (low voltage) P0368: VVT position sensor (for Bank 1) range check (high voltage) P0390: VVT sensor (for Bank 2) open/short P0390: VVT position/Crankshaft position misalignment (for Bank 2) P0392: VVT position sensor (for Bank 2) range check (low voltage) P0393: VVT position sensor (for Bank 2) range check (high voltage) |
|
Required Sensors/Components (Main) |
VVT position sensor (for Bank 1 and 2) |
|
Required Sensors/Components (Sub) |
Crankshaft position sensor |
|
Frequency of Operation |
Continuous |
|
Duration |
5 seconds: P0365, P0390 (After starting engine) 4 seconds: Others |
|
MIL Operation |
2 driving cycles: P0365, P0390 (cranking) Immediate: Others |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
All
|
Monitor runs whenever following DTCs are not present |
None |
Chattering, Low Voltage, High Voltage
|
Starter |
OFF |
|
Ignition switch |
ON |
|
Time after ignition switch off to ON |
2 seconds or more |
|
Battery voltage |
8 V or more |
P0365, P0390 (Engine Running)
|
Engine speed |
600 rpm or more |
|
Battery voltage |
8 V or more |
|
Starter |
OFF |
|
Ignition switch |
ON |
P0365, P0390 (Cranking)
|
Starter |
ON |
|
Minimum battery voltage |
Less than 11 V |
TYPICAL MALFUNCTION THRESHOLDS
P0365, P0390 (Chattering)
|
Exhaust VVT sensor voltage |
Less than 0.3 V, or more than 4.7 V |
P0367, P0392 (Low Voltage)
|
Exhaust VVT sensor voltage |
Less than 0.3 V |
P0368, P0393 (High Voltage)
|
Exhaust VVT sensor voltage |
More than 4.7 V |
P0365, P0390 (Engine Running, Cranking)
|
Exhaust VVT sensor signal |
No signal |
COMPONENT OPERATING RANGE
|
VVT sensor voltage |
0.3 to 4.7 V |
WIRING DIAGRAM
INSPECTION PROCEDURE
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 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
.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE) |
|
(a) Disconnect the VVT sensor connector. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3 (VC2) - Body ground |
Ignition switch ON |
4.5 to 5.0 V |
|
|
2. |
CHECK HARNESS AND CONNECTOR (VVT SENSOR - ECM) |
|
(a) Disconnect the VVT 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 |
|---|---|---|
|
D24-1 (EX+) - D56-69 (EV1+) |
Always |
Below 1 Ω |
|
D24-2 (EX-) - D56-68 (EV1-) |
Always |
Below 1 Ω |
|
D25-1 (EX+) - D56-64 (EV2+) |
Always |
Below 1 Ω |
|
D25-2 (EX-) - D56-65 (EV2-) |
Always |
Below 1 Ω |
|
D24-1 (EX+) or D56-69 (EV1+) - Body ground |
Always |
10 kΩ or higher |
|
D24-2 (EX-) or D56-68 (EV1-) - Body ground |
Always |
10 kΩ or higher |
|
D25-1 (EX+) or D56-64 (EV2+) - Body ground |
Always |
10 kΩ or higher |
|
D25-2 (EX-) or D56-65 (EV2-) - Body ground |
Always |
10 kΩ or higher |
|
|
3. |
CHECK SENSOR INSTALLATION (VVT SENSOR FOR EXHAUST CAMSHAFT) |
|
(a) Check the VVT sensor installation. OK: Sensor is installed correctly. |
|
|
4. |
INSPECT EXHAUST CAMSHAFT |
(a) Check the teeth of the camshaft.
OK:
Teeth do not have any cracks or deformation.
|
|
5. |
REPLACE VVT SENSOR |
(a) Replace the VVT sensor
.
|
|
6. |
CHECK WHETHER DTC OUTPUT RECURS |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear DTCs
.
(e) Start the engine.
(f) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.
(g) Read DTCs.
Result
|
Display (DTC Output) |
Proceed to |
|---|---|
|
No DTC is output |
A |
|
P0365, P0367, P0368, P0390, P0392 or P0393 are output |
B |
HINT:
If the engine does not start, replace the ECM.
|
|
|