P0A10-592 - DC / DC Converter Status Circuit High Input

HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM: P0A10-592: DC / DC Converter Status Circuit High Input
P0A10-592 - DC / DC Converter Status Circuit High Input

DESCRIPTION

The cooling fan of the HV battery and cooling fan in the hybrid vehicle converter are used to cool the hybrid vehicle converter (DC/DC converter).





WIRING DIAGRAM













INSPECTION PROCEDURE

CAUTION:
- Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
HINT
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

PROCEDURE

1. CHECK HYBRID VEHICLE CONTROL ECU P0A09

NG -- CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - HYBRID VEHICLE CONVERTER)
OK -- Continue to next step.

2. CLEAR DTC P0A09

NEXT -- Continue to next step.

3. CHECK DTC OUTPUT (HV)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

(d) Check if DTC is output.

Result:





(e) Turn the power switch off.

B -- REPLACE HYBRID VEHICLE CONTROL ECU Components
A -- Continue to next step.

4. CHECK INTERMITTENT PROBLEMS

(a) Check for intermittent problems Check For Intermittent Problems.

NG -- REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

OK -- REPLACE HYBRID VEHICLE CONTROL ECU Components

5. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - HYBRID VEHICLE CONVERTER)

CAUTION:
Be sure to wear insulated gloves.

(a) Check that the service plug grip is not installed.

NOTICE:
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect connector A58 from the hybrid vehicle control ECU.

(c) Disconnect connector z17 from the hybrid vehicle converter.





(d) Turn the power switch on (IG).

(e) Measure the voltage according to the value(s) in the table below.





Standard Voltage:





Text in Illustration





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

(f) Turn the power switch off.

(g) Connect the hybrid vehicle converter connector.

(h) Connect the hybrid vehicle control ECU connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

6. REPLACE HYBRID VEHICLE CONTROL ECU

(a) Replace the hybrid vehicle control ECU Components.

NEXT -- Continue to next step.

7. CLEAR DTC P0A09

NEXT -- Continue to next step.

8. CHECK DTC OUTPUT (HV)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

(d) Check if DTC is output.

Result:





(e) Turn the power switch off.

B -- REPLACE HYBRID VEHICLE CONVERTER Components

A -- COMPLETED