Lexus ES: Camshaft Position Sensor "A" Circuit Bank 1 or Single Sensor (P034000,P034031)
DESCRIPTION
If the cam position signal pulse sent from the ECM via a direct line is abnormal, the motor generator control ECU (MG ECU) (built into the inverter with converter assembly) stores DTC P034000 or P034031.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| P034000 | Camshaft Position Sensor "A" Circuit Bank 1 or Single Sensor | GI signal (camshaft position sensor) is not input for 2 sec. or more while the engine is running* (1 trip detection logic) |
| Does not come on | Master Warning Light: Comes on |
| P034031 | Camshaft Position Sensor "A" Circuit Bank 1 or Single Sensor No Signal | GI signal (camshaft position sensor) is not input for 2 sec. or more while the engine is running* (1 trip detection logic) |
| Does not come on | Master Warning Light: Comes on |
HINT:
*: When this DTC is stored, vibration may occur when the engine is stopped.
Related Data List| DTC No. | Data List |
|---|---|
| P034000 P034031 |
|
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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- Connect the Techstream to the DLC3.
- Turn the power switch on (IG) and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for 2 minutes or more.
- Turn the power switch on (IG) and turn the Techstream on.
- Turn the power switch on (READY).
- With the vehicle stopped, move the shift lever to P.
- Depress the accelerator pedal to start the engine.
-
Depress the accelerator pedal and maintain the engine speed at 1000 rpm or more for 5 seconds or more.
NOTICE:
As the state of charge of the HV battery may be low after driving in fail-safe mode, it will automatically be charged for 5 to 10 minutes with power switch on (READY) after repairs have been performed.
- Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.
-
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
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-
Before the following operations are conducted, take precautions to prevent electric shock by turning the power switch off, wearing insulated gloves, and removing the service plug grip from HV battery.
- Inspecting the high-voltage system
- Disconnecting the low voltage connector of the inverter with converter assembly
- Disconnecting the low voltage connector of the HV battery
-
To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.
-
After removing the service plug grip from the HV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
-
After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
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HINT:
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
*a
Without waiting for 10 minutes
NOTICE:
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
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PROCEDURE
| 1. | CHECK DTC OUTPUT (ENGINE) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Engine / Trouble Codes.
(d) Check for DTCs.
Powertrain > Engine > Trouble Codes| Result | Proceed to |
|---|---|
| SFI system DTCs are not output. | A |
| Any of the following DTCs are also output. | B |
| Relevant DTC | |
|---|---|
| P034011 | Camshaft Position Sensor "A" Bank 1 or Single Sensor Circuit Short to Ground |
| P034015 | Camshaft Position Sensor "A" Bank 1 or Single Sensor Circuit Short to Battery or Open |
| P03402A | Camshaft Position Sensor "A" Bank 1 or Single Sensor Signal Stuck in Range |
| P034031 | Camshaft Position Sensor "A" Bank 1 or Single Sensor No Signal |
(e) Turn the power switch off.
| B | .gif) | GO TO DTC CHART (SFI SYSTEM) |
|
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| 2. | CHECK DTC OUTPUT (MOTOR GENERATOR CONTROL) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Motor Generator / Trouble Codes.
(d) Check for DTCs.
Powertrain > Motor Generator > Trouble Codes| Result | Proceed to |
|---|---|
| None of the following DTCs are output. | A |
| Any of the following DTCs are also output. | B |
| Relevant DTC | |
|---|---|
| P06B01C | Generator Control Module Position Sensor REF Power Source Circuit Voltage Out of Range |
| P06D61C | Generator Control Module Offset Power Circuit Voltage Out of Range |
| P0A1B1F | Generator Control Module Circuit Intermittent |
| P1C2B49 | Drive Motor "A" Control Module A/D Converter Circuit Internal Electronic Failure |
| P1C2B1C | Drive Motor "A" Control Module A/D Converter Circuit Voltage Out of Range |
| P1CAD49 | Drive Motor "A" Position Sensor Internal Electronic Failure |
| P1CB038 | Drive Motor "A" Position Sensor REF Signal Frequency Incorrect |
| P313487 | Communication Error from Drive Motor "A" to Generator Missing Message |
| P313483 | Communication Error from Drive Motor "A" to Generator Value of Signal Protection Calculation Incorrect |
| P313486 | Communication Error from Drive Motor "A" to Generator Signal Invalid |
HINT:
P034000 or P034031 may be stored due to a malfunction which also causes the DTCs in the preceding table to be stored. In this case, first troubleshoot the output DTCs in the preceding table. Then, perform a test to attempt to reproduce the problems, and check that no DTCs are output.
(e) Turn the power switch off.
| B | | GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM) |
|
| 3. | CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR) |
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| Result | Proceed to |
|---|---|
| OK | A |
| NG (The connector is not connected securely.) | B |
| NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) | C |
| B | | CONNECT SECURELY |
| C | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 4. | CHECK CONNECTOR CONNECTION CONDITION (ECM CONNECTOR) |
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| NG | | CONNECT SECURELY |
|
| 5. | CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - ECM) |
CAUTION:
Be sure to wear insulated gloves.
(a) Check that the service plug grip is not installed.
NOTICE:
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
(b) Disconnect the A58 inverter with converter assembly connector.
(c) Disconnect the A26 ECM connector.
(d) Connect the cable to the negative (-) auxiliary battery terminal.
(e) Turn the power switch on (IG).
| (f) Measure the voltage according to the value(s) in the table below. Standard Voltage:
NOTICE: Turning the power switch on (IG) with the inverter with converter assembly connector and ECM connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection. |
|
(g) Turn the power switch off.
(h) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A58-10 (GI) - A26-24 (G2O) | Power switch off | Below 1 Ω |
Standard Resistance (Check for Short):
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A58-10 (GI) or A26-24 (G2O) - Body ground and other terminals | Power switch off | 10 kΩ or higher |
(i) Disconnect the cable from the negative (-) auxiliary battery terminal.
(j) Reconnect the A26 ECM connector.
(k) Reconnect the A58 inverter with converter assembly connector.
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 6. | CHECK ECM |
(a) Disconnect the A26 ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
| *a | Component without harness connected (ECM) | - | - |
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A26-24 (G2O) - A26-10 (E1) | Power switch off | 10 kΩ or higher |
(c) Reconnect the A26 ECM connector.
| OK | | REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS |
| NG | | REPLACE ECM |
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