Lexus ES: Camshaft Position Sensor "B" Bank 1 Circuit Short to Ground (P036511,P036515,P039011,P039015)
DESCRIPTION
The VVT sensor (for exhaust camshaft) (EV1, EV2 signal) consists of a magnet and MRE (Magneto Resistance Element).
The exhaust camshaft has a timing rotor for the VVT sensor. When the exhaust camshaft rotates, changes occur in the air gaps between the timing rotor 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 to pulse signals, uses the pulse signals to determine the camshaft angle, and sends it to the ECM. Then the ECM uses this data to control fuel injection duration, injection timing and the Variable Valve Timing (VVT) system.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P036511 | Camshaft Position Sensor "B" Bank 1 Circuit Short to Ground | The VVT sensor (for exhaust camshaft of bank 1) output voltage is less than 0.3 V for 4 seconds or more (1 trip detection logic). |
| Comes on | DTC stored | SAE Code: P0367 |
| P036515 | Camshaft Position Sensor "B" Bank 1 Circuit Short to Battery or Open | The VVT sensor (for exhaust camshaft of bank 1) output voltage is higher than 4.7 V for 4 seconds or more (1 trip detection logic). |
| Comes on | DTC stored | SAE Code: P0368 |
| P039011 | Camshaft Position Sensor "B" Bank 2 Circuit Short to Ground | The VVT sensor (for exhaust camshaft of bank 2) output voltage is less than 0.3 V for 4 seconds or more (1 trip detection logic). |
| Comes on | DTC stored | SAE Code: P0392 |
| P039015 | Camshaft Position Sensor "B" Bank 2 Circuit Short to Battery or Open | The VVT sensor (for exhaust camshaft of bank 2) output voltage is higher than 4.7 V for 4 seconds or more (1 trip detection logic). |
| Comes on | DTC stored | SAE Code: P0393 |
Reference: Inspection using an oscilloscope.
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MONITOR DESCRIPTION
If the output voltage transmitted by the VVT sensor (for exhaust camshaft) remains low or high, the ECM interprets this as a malfunction in the sensor circuit, illuminates the MIL and stores a DTC.
MONITOR STRATEGY
| Related DTCs | P0367: Exhaust VVT sensor (bank 1) range check (low voltage) P0368: Exhaust VVT sensor (bank 1) range check (high voltage) P0392: Exhaust VVT sensor (bank 2) range check (low voltage) P0393: Exhaust VVT sensor (bank 2) range check (high voltage) |
| Required Sensors/Components (Main) | VVT sensor (for exhaust camshaft) |
| Required Sensors/Components (Related) | Crankshaft position sensor |
| Frequency of Operation | Continuous |
| Duration | 4 seconds |
| MIL Operation | Immediate |
| Sequence of Operation | None |
TYPICAL ENABLING CONDITIONS
P0367 and P0368: Exhaust VVT Sensor (Bank 1) Range Check (Low Voltage, High Voltage)| All of the following conditions are met | - |
| Starter | Off |
| Engine switch | On (IG) |
| Time after engine switch off to on (IG) | 2 seconds or more |
| Exhaust VVT sensor verify pulse input fail (P0365) | Not detected |
| Battery voltage | 8 V or higher |
| All of the following conditions are met | - |
| Starter | Off |
| Engine switch | On (IG) |
| Time after engine switch off to on (IG) | 2 seconds or more |
| Exhaust VVT sensor verify pulse input fail (P0390) | Not detected |
| Battery voltage | 8 V or higher |
TYPICAL MALFUNCTION THRESHOLDS
P0367 and P0392: Exhaust VVT Sensor Range Check (Low Voltage)| Exhaust VVT sensor voltage | Less than 0.3 V |
| Exhaust VVT sensor voltage | Higher than 4.7 V |
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.
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-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the engine switch off and wait for at least 30 seconds.
- Turn the engine switch on (IG) [A].
- Turn the Techstream on.
- Wait for 5 seconds or more [B].
- Enter the following menus: Powertrain / Engine / Trouble Codes [C].
-
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.
- Enter the following menus: Powertrain / Engine / Utility / All Readiness.
- Input the DTC: P036511, P036515, P039011 or P039015.
-
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 is malfunctioning.
-
[A] to [C]: 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 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
CAUTION / NOTICE / HINT
HINT:
-
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.
- 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. | CHECK HARNESS AND CONNECTOR |
| *a | Front view of wire harness connector (to VVT Sensor (for Exhaust Camshaft)) |
| *b | Bank 1 |
| *c | Bank 2 |
HINT:
Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.
(a) Disconnect the VVT sensor (for exhaust camshaft) connector.
(b) Turn the engine switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| C10-3 (VC2) - Body ground | Engine switch on (IG) | 4.5 to 5.5 V |
| C11-3 (VC2) - Body ground | Engine switch on (IG) | 4.5 to 5.5 V |
| C10-1 (EX+) - Body ground | Engine switch on (IG) | 3.0 to 5.0 V |
| C11-1 (EX+) - Body ground | Engine switch on (IG) | 3.0 to 5.0 V |
(d) Turn the engine 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 |
|---|---|---|
| C10-3 (VC2) - C10-1 (EX+) | Engine switch off | 1.425 to 1.575 kΩ |
| C11-3 (VC2) - C11-1 (EX+) | Engine switch off | 1.425 to 1.575 kΩ |
| C10-2 (EX-) - Body ground | Always | Below 1 Ω |
| C11-2 (EX-) - Body ground | Always | Below 1 Ω |
| OK | .gif) | REPLACE VVT SENSOR (FOR EXHAUST CAMSHAFT) |
|
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| 2. | CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR EXHAUST CAMSHAFT) - ECM) |
(a) Disconnect the VVT sensor (for exhaust camshaft) 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 |
|---|---|---|
| C10-1 (EX+) - C32-131 (EV1+) | Always | Below 1 Ω |
| C10-2 (EX-) - C32-100 (VV1-) | Always | Below 1 Ω |
| C10-3 (VC2) - C32-99 (VCV1) | Always | Below 1 Ω |
| C11-1 (EX+) - C32-130 (EV2+) | Always | Below 1 Ω |
| C11-2 (EX-) - C32-97 (VV2-) | Always | Below 1 Ω |
| C11-3 (VC2) - C32-98 (VCV2) | Always | Below 1 Ω |
| C10-1 (EX+) or C32-131 (EV1+) - Body ground and other terminals | Always | 10 kΩ or higher |
| C10-2 (EX-) or C32-100 (VV1-) - Body ground and other terminals | Always | 10 kΩ or higher |
| C10-3 (VC2) or C32-99 (VCV1) - Body ground and other terminals | Always | 10 kΩ or higher |
| C11-1 (EX+) or C32-130 (EV2+) - Body ground and other terminals | Always | 10 kΩ or higher |
| C11-2 (EX-) or C32-97 (VV2-) - Body ground and other terminals | Always | 10 kΩ or higher |
| C11-3 (VC2) or C32-98 (VCV2) - Body ground and other terminals | Always | 10 kΩ or higher |
| OK | | REPLACE ECM |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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