DTC P0338-885: Crankshaft 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 and ECT / Trouble Codes.
4. Check if DTCs are output.

   Result

   Result	Proceed to
   Engine control system DTCs are not output.	A
   Engine control system DTCs are output.	B

B → See step   10 

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: Checking Hybrid Vehicle Control ECU (Check Waveform)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Item	Contents
   Terminal	A75-13 (NEI) - A75-7 (E1)
   Equipment Setting	5 V/DIV., 1 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 off.
2. Disconnect connector A75 from the hybrid vehicle control ECU.
3. Disconnect connector A14 from the ECM.
4. Turn the power switch on (IG).
5. Measure the voltage according to the value(s) in the table below.
   Fig 2: Checking Harness And Connector (Hybrid Vehicle Control ECU - ECM)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   A75-13 (NEI) - Body ground	Power switch on (IG)	Below 1 V

   NOTE:

   Turning the power switch on (IG) with the ECM and hybrid vehicle control ECU connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

6. Turn the power switch off.
7. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   A75-13 (NEI) - A14-27 (NEO1)	Power switch off	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   11 

1. Turn the power switch off.
2. Disconnect connector A14 from the ECM.
3. Turn the power switch on (IG).
4. Measure the voltage according to the value(s) in the table below.
   Fig 3: Checking Hybrid Vehicle Control ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   A14-27 (NEO1) - Body ground	Power switch on (IG)	10 to 14 V

   NOTE:

   Turning the power switch on (IG) with the ECM connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

NG → See step   9 

OK: Go to next step 

1. Turn the power switch off.
2. Connect connector A14 to the ECM.
3. Disconnect connector A75 from the hybrid vehicle control ECU.
   Fig 4: Disconnecting Connector A75 From Hybrid Vehicle Control ECU

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

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   A75-13 (NEI) - A75-7 (E1)	Power switch off	10 kΩ or higher

NG → See step   11 

OK: Go to next step 

1. Disconnect connector A14 from the ECM.
   Fig 5: Checking Harness And Connector (Hybrid Vehicle Control ECU - ECM)

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

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   A75-13 (NEI) or A14-27 (NEO1) - Body ground	Power switch off	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   12