DTC P0A0F-238: Engine Failed to Start [02/2014 - 11/2016]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Check for DTCs.

   Powertrain > Hybrid Control > Trouble Codes 

   Result	Proceed to
   Only DTC P0A0F-238 is output or any DTCs other than P0A1D (Hybrid Powertrain Control Module) are also output.	A
   P0A1D (Hybrid Powertrain Control Module) is output.	B

5. Turn the power switch off.

Result: 

B 

GO TO DTC CHART (HYBRID CONTROL SYSTEM): 

Refer to DIAGNOSTIC TROUBLE CODE CHART [02/2014 - 11/2015] .

Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2015 - 11/2016] .

Result: 

A 

Go to next step 

1. Check that the shift lever is in 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 power switch on (READY) while performing this inspection. Be sure to turn the power 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.

4. Lower the vehicle.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  7

Result: 

OK 

Go to next step 

See step  3

Result: 

NEXT 

Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (READY).
3. Enter the following menus: Powertrain / Hybrid Control / Data List / Generator (MG1) Rev, Engine Revolution.

   Powertrain > Hybrid Control > Data List 

   Tester Display
   Engine Revolution
   Generator(MG1) Rev

4. Read the Data List.
5. While the READY indicator is on, depress the accelerator pedal for 10 seconds.

   OK

   The engine races

   HINT: 

   • If the engine does not race and DTC P3147-239 (Transmission system) is output or generator (MG1) operates but the engine does not crank, replace the hybrid vehicle transaxle assembly.
   • Refer to the graph for Data List confirmation of "Generator (MG1) Rev" and " Engine Revolution".

   Data List	Engine Rev	Generator (MG1) Rev
   Reference Value	Approximately 900 rpm	Approximately 3200 rpm
   	Approximately 1500 rpm	Approximately 5400 rpm

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

6. Turn the power switch off.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY: 

Refer to COMPONENTS [02/2014 - 11/2015] .

Refer to COMPONENTS [11/2015 - 11/2016] .

Result: 

OK 

Go to next step 

1. Turn the power switch 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 power switch off.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY: 

Refer to COMPONENTS [02/2014 - 11/2015] .

Refer to COMPONENTS [11/2015 - 11/2016] .

Result: 

OK 

Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (READY).
3. Enter the following menus: Powertrain / Hybrid Control / Data List / Motor (MG2) Revolution, Generator (MG1) Rev, Engine Revolution.

   Powertrain > Hybrid Control > Data List 

   Tester Display
   Engine Revolution
   Motor(MG2) Revolution
   Generator(MG1) Rev

4. Read the Data List.
5. Move the shift lever to D.
6. Fully depress the accelerator pedal when the vehicle speed is 10 km/h (6 mph) or more.
   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.

   HINT: 

   If the engine races or DTC P3147-241 (Transmission system) is output, replace the transmission input damper assembly.

7. Turn the power switch off.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE POWER MANAGEMENT CONTROL ECU. 

Refer to COMPONENTS [02/2014 - 11/2016] .

Result: 

NG 

REPLACE TRANSMISSION INPUT DAMPER ASSEMBLY. 

Refer to COMPONENTS [02/2014 - 11/2016] .

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 power switch on (READY) while performing this inspection. Be sure to turn the power 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.

4. Lower the vehicle.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY: 

Refer to COMPONENTS [02/2014 - 11/2015] .

Refer to COMPONENTS [11/2015 - 11/2016] .

Result: 

NG 

REPAIR OR REPLACE ENGINE