Toyota Avalon (XX50): 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)	SFI system Inverter with converter assembly ECM Wire harness or connector	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)	SFI system Inverter with converter assembly ECM Wire harness or connector	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	Crank Position (Hybrid control system) Engine Speed

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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1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
4. Turn the power switch off and wait for 2 minutes or more.
5. Turn the power switch on (IG) and turn the Techstream on.
6. Turn the power switch on (READY).
7. With the vehicle stopped, move the shift lever to P.
8. Depress the accelerator pedal to start the engine.
9. 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.

10. Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.
11. 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:

• 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

GO TO DTC CHART (SFI SYSTEM)

A

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)

A

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

A

4.	CHECK CONNECTOR CONNECTION CONDITION (ECM CONNECTOR)

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NG

CONNECT SECURELY

OK

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 A42 inverter with converter assembly connector.

(c) Disconnect the A19 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: Tester Connection Condition Specified Condition A42-10 (GI) - Body ground Power switch on (IG) Below 1 V 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.

*a Front view of wire harness connector (to Inverter with Converter Assembly) *b Front view of wire harness connector (to ECM)

(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
A42-10 (GI) - A19-24 (G2O)	Power switch off	Below 1 Ω

Standard Resistance (Check for Short):

Tester Connection	Condition	Specified Condition
A42-10 (GI) or A19-24 (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 A19 ECM connector.

(k) Reconnect the A42 inverter with converter assembly connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

6.

CHECK ECM

(a) Disconnect the A19 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
A19-24 (G2O) - A19-10 (E1)	Power switch off	10 kΩ or higher

(c) Reconnect the A19 ECM connector.

OK

REPLACE INVERTER WITH CONVERTER ASSEMBLY

NG

REPLACE ECM