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

L110 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P0A10-592: DC / DC Converter Status Circuit High Input
P0A10-592 - DC / DC Converter Status Circuit High Input

DESCRIPTION

Refer to the description for DTC P0A09-591 P0A09.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0A09-591 P0A09.

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, check the voltage at 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

(a) Connect an oscilloscope between the battery pack wire terminals specified in the table below, and measure the waveform.

HINT
Perform this inspection with the battery pack wire connected.

OK -- CLEAR DTC
NG -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - BATTERY PACK WIRE CONNECTOR)

(a) Turn the power switch off.

(b) Disconnect the battery pack wire connector Components.

Standard voltage:

(b) Disconnect connector N1 from the hybrid vehicle converter.

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

Standard voltage:

NOTICE:
Turning the power switch on (IG) with the battery pack wire connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

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

4. REPLACE HYBRID VEHICLE CONTROL ECU

(a) Replace the hybrid vehicle control ECU Service and Repair.

NEXT -- Continue to next step.

5. CLEAR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Read and record the DTCs and freeze frame data.

(d) Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

(e) Clear the DTCs.

NEXT -- Continue to next step.

6. RECONFIRM DTC OUTPUT (HV)

(a) Connect the Techstream to the DLC3.

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

(c) Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

(d) Read output DTCs.

Result:

DTC P0A10-592 is output.

YES -- REPLACE HYBRID VEHICLE CONTROL ECU Service and Repair

NO -- COMPLETED

7. CLEAR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Read and record the DTCs and freeze frame data.

(d) Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

(e) Clear the DTCs.

NEXT -- Continue to next step.

8. RECONFIRM DTC OUTPUT (HV)

(a) Connect the Techstream to the DLC3.

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

(c) Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

(d) Read output DTCs.

Result:

DTC P0A10-592 is output.

YES -- REPLACE HYBRID VEHICLE CONTROL ECU Service and Repair
NO -- Continue to next step.

9. CHECK FOR INTERMITTENT PROBLEMS

(a) Check for intermittent problems L110 Hybrid Vehicle Control System.

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

OK -- REPLACE HYBRID VEHICLE CONTROL ECU Service and Repair