DTC P0A94-587: DC / DC Converter Performance: 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 if DTCs are output.

   Result

   Result	Proceed to
   DTC P0A94-587 only is output. Alternatively, P0A94- 587 and any DTCs other than P0AFC-129, P0A94-442 or P0A94-585 are output.	A
   P0A94-587 and P0AFC-129 (HV battery voltage circuit malfunction) are output.	B
   P0A94-587 and P0A94-442 (abnormal voltage execution value) are output.	C
   P0A94-587 and P0A94-585 (boost converter voltage (VL) sensor performance problem) are output.	D

5. Turn the power switch off.

B → See step   9 

C → See step   10 

D → See step   11 

A: Go to next step 

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. Read and record the DTCs and freeze frame data.
5. Clear DTCs and freeze frame data.
6. Turn the power switch off.

NEXT: Go to next step 

1. Connect the Techstream to the DLC3. (*1)
2. Turn the power switch on (READY). (*2)
3. Enter the following menus: Powertrain / Hybrid Control / Data List (*3)
4. If both "Power Resource VB" and "VL-Voltage before Boosting" are less than 220 V, move the shift lever to D and depress both the accelerator pedal and brake pedal at the same time to raise them to 220 V or more. (*4)
5. Push the P position switch. (*5)
6. Set the air conditioning to MAX COOL and turn the headlights on. (*6)
7. Confirm that "Batt Pack Current Val" is more than 3 A. (*7)
8. Leave the vehicle for 15 seconds with the engine stopped during steps (*5) (*6) and (*7). (*8)
9. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. (*9)
10. Check if DTCs are output. (*10)
    NOTE:

    If the low HV battery charge warning light comes on, push the P position switch and start the engine to charge the HV battery. After the engine stops, perform steps (*1) through (*10) again.

    Result

    Result		Proceed to
    No DTCs are output, or DTCs other than the following are output.		A
    P0AFC-129 (HV battery voltage circuit malfunction) is output.		B
    P0A94-585 (boost converter voltage (VL) sensor performance problem) is output.		C
    P3000-388 (discharge inhibition) is output.		D
    P3004-132 (high voltage power supply line problem) is output.		E

11. Turn the power switch off.

B → See step   12 

C → See step   10 

D → LEAVE VEHICLE WITH PARK (P) SELECTED, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS (PERFORM STEPS (*1) THROUGH (*10)) 

E → See step   12 

A: Go to next step 

1. Turn the power switch on (READY). (*11)
2. Perform a road test that repeats full acceleration to 60 km/h (37 mph) and then braking to a complete stop three times. (*12)
3. Connect the Techstream to the DLC3. (*13)
4. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. (*14)
5. Check if DTCs are output. (*15)

   Result

   Result		Proceed to
   No DTCs are output, or DTCs other than the following are output.		A
   P0AFC-129 (HV battery voltage circuit malfunction) is output.		B
   P0A94-585 (boost converter voltage (VL) sensor performance problem) is output.		C
   P3000-388 (discharge inhibition) is output.		D
   P3004-132 (high voltage power supply line problem) is output.		E

6. Turn the power switch off.

B → See step   12 

C → See step   10 

D → LEAVE VEHICLE WITH PARK (P) SELECTED, AND CHARGE HV BATTERY BY IDLING UNTIL IDLING STOPS (PERFORM STEPS (*11) THROUGH (*15)) 

E → See step   12 

A: 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.
4. Select "Power Resource VB", "VL-Voltage before Boosting" and "VH-Voltage after Boosting" in the Data List.
5. If both "Power Resource VB" and "VL-Voltage before Boosting" are less than 220 V, move the shift lever to D and depress both the accelerator pedal and brake pedal at the same time to raise them to 220 V or more.
6. Turn the engine off, push the P position switch, and read the Data List when the vehicle is stationary.

   Result

   Result	Proceed to
   Both of the following are not satisfied.	A
   Both of the following are satisfied: Difference between "Power Resource VB" and "VH-Voltage after Boosting" is less than 5 V. Difference between "VL-Voltage before Boosting" and "VH-Voltage after Boosting" is more than 35 V.	B
   Both of the following are satisfied: Difference between "VH-Voltage after Boosting" and "VL-Voltage before Boosting" is more than 5 V. Difference between "Power Resource VB" and "VH-Voltage after Boosting" is less than 15 V.	C

7. Turn the power switch off.

B → See step   10 

C → See step   12 

A: Go to next step 

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. Read the freeze frame data of DTC P0A94-587.

   Result

   Result	Proceed to
   Both of the following are satisfied or both of the following are not satisfied.	A
   "Power Resource VB" is less than 160 V or more than 285 V.	B
   "VL-Voltage before Boosting" is less than 160 V or more than 285 V.	C

5. Turn the power switch off.

B → See step   12 

C → See step   10 

A: Go to next step 

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. Read the freeze frame data of DTC P0A94-587.

   HINT: 

   In the freeze frame data, read the "Power Resource VB" and all of the "Battery Block Vol".

   Result

   Result	Proceed to
   Others (Freeze frame data is not stored).	A
   Both of the following are satisfied: Sum of all "Battery Block Vol" is more than ("Power Resource VB" - 40 V) Sum of all "Battery Block Vol" is less than ("Power Resource VB" + 25 V)	B
   Neither A nor B is satisfied.	C

5. Turn the power switch off.

B → See step   10 

C → See step   12 

A: 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.
4. If both "Power Resource VB" and "VL-Voltage before Boosting" are less than 220 V, move the shift lever to D and depress both the accelerator pedal and brake pedal at the same time to raise them to 220 V or more.
5. Turn the engine off, push the P position switch, and read the "Power Resource VB" and all of the "Battery Block Vol", when the vehicle is stationary.

   Result

   Result	Proceed to
   Both of the following are satisfied: Sum of all "Battery Block Vol" is more than ("Power Resource VB" -40 V) Sum of all "Battery Block Vol" is less than ("Power Resource VB" +25 V)	A
   The preceding condition is not satisfied.	B

6. Turn the power switch off.

B → See step   13 

A → See step   10