DTC P0A0F-238: Engine Failed to Start: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   Result	Proceed to
   P0A0F-238 only is output.	A
   P0A1D (hybrid vehicle control ECU circuit malfunction) is output.	B

5. Turn the ignition switch off.

B → See step   9 

A: Go to next step 

1. Move the shift lever to P.
2. Lift up the vehicle.
3. Turn the crankshaft pulley using hand tools to check if the crankshaft can rotate smoothly.
   WARNING:

   Do not turn the ignition switch to ON (READY) while performing this inspection. Be sure to turn the ignition switch off before performing this inspection, to prevent the engine from starting.

   NOTE:

   Engine compression causes resistance when turning the crankshaft pulley. Check if the crankshaft rotates smoothly (or if it is locked) by manually applying sufficient torque to turn the crankshaft pulley. The torque required to turn the crankshaft pulley should be the same as for a known good vehicle of the same type.

   OK

   The crankshaft rotates smoothly.

NG → See step   8 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Read and record the DTCs and freeze frame data.
5. Clear DTCs and freeze frame data.
6. Turn the ignition switch off.

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Move the shift lever to P.
4. Enter the following menus: Powertrain / Hybrid Control / Data List / Generator (MG1) Rev, Engine Revolution.
5. Read the Data List.
6. Turn the ignition switch to ON (READY).
7. While the READY indicator is on, fully depress the accelerator pedal for 10 seconds.

   OK

   Generator (MG1) Rev increases to approximately 3.6 times that of Engine Revolution.

   HINT: 

   Refer to the graph for Data List confirmation of "Generator(MG1) Rev" and "Engine Revolution".

   Data List	Engine Revolution	Generator(MG1) Rev
   Reference Value	Approximately 900 RPM	Approximately 3200 RPM
   	Approximately 1200 RPM	Approximately 4300 RPM
   	Approximately 1500 RPM	Approximately 5400 RPM

   Fig 1: Identifying Generator Revolution And Engine Revolution Graph

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
8. Turn the ignition switch off.

NG → See step   10 

OK: Go to next step 

1. Turn the ignition switch to ON (READY).
2. Depress the brake pedal, move the shift lever to D, and release the brake pedal.

   OK

   The wheels turn (the vehicle creeps forward).

3. Turn the ignition switch off.

NG → See step   10 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Enter the following menus: Powertrain / Hybrid Control / Data List / Motor (MG2) Revolution, Generator (MG1) Rev, Engine Revolution.
4. Read the Data List.
5. Fully depress the accelerator pedal to accelerate the vehicle from a stop.
   NOTE:

   Perform this test only in an appropriate safe location, in accordance with all local laws.

   OK

   The difference between Engine Revolution and 0.28 X Generator (MG1) Rev + 0.29 X Motor (MG2) Revolution is 500 RPM or more and it is maintained for 1 second.

6. Turn the ignition switch off.

NG → See step   11 

OK: Go to next step 

1. Perform steps 2 through 6 again.

   OK

   The problem symptom is not reproduced.

NG → See step   10 

OK → See step   13 

1. Lift up the vehicle.
2. Move the shift lever to N.
3. Turn the crankshaft pulley using hand tools to check if the crankshaft can rotate smoothly.
   WARNING:

   Do not turn the ignition switch to ON (READY) while performing this inspection. Be sure to turn the ignition switch off before performing this inspection, to prevent the engine from starting.

   NOTE:

   Engine compression causes resistance when turning the crankshaft pulley. Check if the crankshaft rotates smoothly (or if it is locked) by manually applying sufficient torque to turn the crankshaft pulley. The torque required to turn the crankshaft pulley should be the same as for a known good vehicle of the same type.

   OK

   The crankshaft rotates smoothly.

NG → See step   12 

OK → See step   10