DTC P0343-886: 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 / Hybrid Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   Result	Proceed to
   P0343-886 only is output.	A
   P0343-747 is also output.	B

B → See step   7 

A: Go to next step 

1. Check the connections of the hybrid vehicle control ECU connectors.

   OK

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

NG → CONNECT SECURELY 

OK: Go to next step 

1. Check the connections of the ECM connectors.

   OK

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

NG → CONNECT SECURELY 

OK: Go to next step 

1. Connect an oscilloscope to the hybrid vehicle control ECU terminals specified in the table below, and measure the waveform.
   Fig 1: Identifying A75 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Item	Contents
   Terminal	A75-14 (GI) - A75-7 (E1)
   Equipment Setting	5 V/DIV., 20 ms./DIV.
   Condition	Power switch on (READY) with engine running

   Result

   Result	Proceed to
   Normal	A
   Waveform is flat, and is stuck on the +B side.	B
   Waveform is flat, and is stuck on the GND side.	C

C → See step   7 

B → See step   6 

A: Go to next step 

1. Check for intermittent problems. Refer to CHECK FOR INTERMITTENT PROBLEMS .

NG → REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

OK → See step   12 

1. Turn the power switch on (IG).
   Fig 2: Identifying A14 Connector Terminals

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

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   A14-19 (GO1) - Body ground	Power switch on (IG)	10 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   11 

1. Turn the power switch off.
2. Disconnect connector A75 from the hybrid vehicle control ECU.
3. Measure the resistance according to the value(s) in the table below.
   Fig 3: Identifying A75 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   A75-14 (GI) - A75-7 (E1)	Power switch off	10 kΩ or higher

NG → See step   12 

OK: Go to next step 

1. Turn the power switch off.
   Fig 4: Identifying A77 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Remove the service plug grip. Refer to PRECAUTION .
3. Disconnect the low voltage connector from the inverter with converter assembly.
4. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   A77-16 (GI) - A77-30 (GND1)	Power switch off	10 kΩ or higher

NG → See step   13 

OK: Go to next step 

1. Disconnect connector A14 from the ECM.
2. Measure the resistance according to the value(s) in the table below.
   Fig 5: Checking Harness And Connector (Hybrid Vehicle Control ECU -- ECM)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance (Check for open)

   Tester Connection	Switch Condition	Specified Condition
   A75-14 (GI) - A14-19 (GO1)	Power switch off	Below 1 Ω

   Standard resistance (Check for short)

   Tester Connection	Switch Condition	Specified Condition
   A75-14 (GI) or A14-19 (GO1) - Body ground and other terminals	Power switch off	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Measure the resistance according to the value(s) in the table below.
   Fig 6: Identifying A14 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   A14-19 (GO1) - Body ground	Power switch off	10 kΩ or higher

NG → See step   11 

OK → See step   12