DTC P0343-747: Camshaft Position Sensor "A" Circuit High Input: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Select the following menu items: Powertrain / Engine / Trouble Codes.
4. Check if DTCs are output.

   Result

   Any two or more of the following DTCs are output simultaneously. 

   DTC No.	Relevant Diagnosis
   P0340	Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor)

   HINT: 

   • Turning the power switch on (IG) with the service plug grip and inverter cover removed causes interlock switch system DTC P0A0D-350 to be output.
   • P0343-747 may be output due to a malfunction which causes the DTCs in the table above to be output. In this case, first troubleshoot the output DTCs in the table above. Then, perform a reproduction test to check that no DTCs are output.

YES → See step   9 

NO: Go to next step 

1. Check if the engine can start.
2. Connect the Techstream to the DLC3.
3. Select the following menu items: Powertrain / Engine / Trouble Codes.
4. Read output DTCs.

   Result

   Result	Proceed to
   The engine cannot start.	B
   The engine can start and DTC P0340 is output within 10 seconds.	B
   The engine can start and DTC P0340 is not output.	A

B → See step   9 

A: Go to next step 

1. Check the connections of the hybrid vehicle control ECU connectors.
   Fig 1: Identifying Hybrid Vehicle Control ECU Component

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Confirm that the lever is securely engaged.
   2. Confirm that the connector does not come out when its body is pulled.

      OK

      The connectors are connected securely and there are no contact problems.

NG → CONNECT SECURELY 

OK: Go to next step 

1. Turn the power switch off and remove the service plug grip. Refer to PRECAUTION .
   NOTE:

   After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair information because this may cause a malfunction.

2. Check the connections of the inverter with converter assembly connectors.
   Fig 2: Identifying Inverter With Converter Assembly Component Location

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Confirm that the lever is securely engaged.
   2. Confirm that the connector does not come out when its body is pulled.

      OK

      The connectors are connected securely and there are no contact problems.

NG → CONNECT SECURELY 

OK: Go to next step 

1. Disconnect the A61 hybrid vehicle control ECU connector.
2. Disconnect the A62 inverter with converter assembly connector.
3. Measure the resistance according to the value(s) in the table below.
   Fig 3: Identifying Hybrid Vehicle Control System ECU Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance (Check for open)

   Tester Connection	Specified Condition
   GO (A61-14) - GI (A62-13)	Below 1 Ω

   Standard resistance (Check for short)

   Tester Connection	Specified Condition
   GO (A61-14) or GI (A62-13) - Body ground	10 kΩ or more

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the hybrid vehicle control ECU. Refer to REMOVAL .
   Fig 4: Identifying Hybrid Vehicle Control System ECU Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Specified Condition
   GO (A61-14) - E1 (C64-14)	100 Ω or more

NG → See step   8 

OK: Go to next step 

1. Measure the resistance according to the value(s) in the table below.
   Fig 5: Identifying Inverter With Converter Assembly Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester Connection	Specified Condition
   GI (A62-13) - GND1 (A62-11)	10 kΩ or more

   HINT: 

   After the inspection, check for DTCs. If DTC P0343-747 is output again, replace the inverter with converter assembly.

NG → See step   10 

OK → See step   8