DTC P0A08-264: DC / DC Converter Status Circuit [02/2014 - 11/2016]: Procedure
- CHECK DTC OUTPUT (HYBRID CONTROL)
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
- Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes
Result Proceed to P0A08-264 only is output, or DTCs except the ones in the table below are also output. A Any of the following DTCs including pending DTCs are also output. B Relevant DTC P0A93-346 Inverter Cooling System Performance P0A94-547, 548, 549 DC / DC Converter Performance P0AA6-526, 613, 655 Hybrid Battery Voltage System Isolation Fault P0ADB-227 Hybrid Battery Positive Contactor Control Circuit Low P0ADF-229 Hybrid Battery Negative Contactor Control Circuit Low P0AE6-225 Hybrid Battery Precharge Contactor Control Circuit Low P0C73-776 Motor Electronics Coolant Pump "A" Control Performance P3004-131, 803 High Voltage Power Resource P314A-828 Inverter Coolant Pump Speed Signal - 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
- CHECK FUSE (DC/DC-S)
- Remove the DC/DC-S fuse from the fusible link block assembly.
*1 Fusible Link Block Assembly *2 DC/DC-S Fuse - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition DC/DC-S fuse terminals Always Below 1 Ω - Install the DC/DC-S fuse.
Result
Proceed to OK NG
Result:
NG
See step 25
Result:
OK
Go to next step
- Remove the DC/DC-S fuse from the fusible link block assembly.
- CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR)
See step 1
Result
Proceed to OK NG Result:
NG
CONNECT SECURELY
Result:
OK
Go to next step
- CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR)
See step 3
Result Proceed to OK A NG (The connector is not connected securely.) B NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C Result:
B
CONNECT SECURELY
Result:
C
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
A
Go to next step
- CHECK FUSIBLE LINK BLOCK ASSEMBLY (DC/DC)
- Check the fusible link block assembly (DC/DC) in the No. 1 engine room relay block and No. 1 junction block assembly for improper installation.
OK
The fusible link is installed securely.
- Remove the fusible link block assembly from the No. 1 engine room relay block and No. 1 junction block assembly.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Fusible link block assembly (DC/DC) 1 - 2 Always Below 1 Ω *1 Fusible Link Block Assembly - Install the fusible link block assembly.
Result
Proceed to OK NG
Result:
NG
REPLACE FUSIBLE LINK BLOCK ASSEMBLY (DC/DC)
Result:
OK
Go to next step
- Check the fusible link block assembly (DC/DC) in the No. 1 engine room relay block and No. 1 junction block assembly for improper installation.
- CHECK CABLE AND WIRE HARNESS WARNING:
Be sure to wear insulated gloves.
- Check that the service plug grip is not installed.NOTE:
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.
- Remove the inverter terminal cover from the inverter with converter assembly.
- Using a megohmmeter set to 500 V, measure the insulation resistance according to the value(s) in the table below.NOTE:
Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.
Standard Resistance
Tester Connection Condition Specified Condition s2-3 (U) - Body ground Power switch off 1 MΩ or higher s2-2 (V) - Body ground Power switch off 1 MΩ or higher s2-1 (W) - Body ground Power switch off 1 MΩ or higher r2-3 (U) - Body ground Power switch off 1 MΩ or higher r2-2 (V) - Body ground Power switch off 1 MΩ or higher r2-1 (W) - Body ground Power switch off 1 MΩ or higher HINT:
Perform this inspection while the generator cable and motor cable are connected.
*1 Motor Cable *2 Generator Cable - Install the inverter terminal cover to the inverter with converter assembly.
Result
Proceed to OK NG
Result:
NG
See step 19
Result:
OK
Go to next step
- Check that the service plug grip is not installed.
- CHECK AMD TERMINAL VOLTAGE WARNING:
Be sure to wear insulated gloves.
- Connect the cable to the negative (-) auxiliary battery terminal.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition 1M-1 (AMD) - Body ground Power switch off Same as auxiliary battery voltage - Disconnect the cable from the negative (-) auxiliary battery terminal.
Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
Go to next step
- CHECK AMD TERMINAL CONNECTION CONDITION WARNING:
Be sure to wear insulated gloves.
- Check that the service plug grip is not installed.NOTE:
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.
- Check that the bolts for the AMD terminal are tightened to the specified torque, the AMD terminal is connected securely, and there is no contact problem.
Torque
T = 9.0 N*m {92 kgf*cm, 80 in.*lbf} (Inverter with converter assembly side)
T = 8.5 N*m {87 kgf*cm, 75 in.*lbf} (No. 1 engine room relay block and No. 1 junction block assembly side)
Result Proceed to There are no arc marks. The terminal is connected securely and there is no contact problem. A There are no arc marks. The terminal is not connected securely and there is a contact problem. B There are arc marks. - C
Result:
B
CONNECT SECURELY
Result:
C
REPLACE MALFUNCTIONING PARTS
Result:
A
Go to next step
- Check that the service plug grip is not installed.
- CHECK NO. 2 ENGINE ROOM WIRE WARNING:
Be sure to wear insulated gloves.
- Check that the service plug grip is not installed.NOTE:
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.
- Remove the No. 2 engine room wire from the AMD terminal (inverter with converter assembly side and No. 1 engine room relay block and No. 1 junction block assembly side).
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition B1-1 (AMD) - 1M-1 (AMD) Always Below 1 Ω *1 No. 2 Engine Room Wire - Install the No. 2 engine room wire.
Result
Proceed to OK NG
Result:
NG
REPLACE NO. 2 ENGINE ROOM WIRE.
Refer to COMPONENTS [02/2014 - 11/2016] .
Result:
OK
Go to next step
- Check that the service plug grip is not installed.
- CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - DC/DC-S FUSE) WARNING:
Be sure to wear insulated gloves.
- Check that the service plug grip is not installed.NOTE:
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.
- Disconnect the A46 inverter with converter assembly connector.
- Connect the cable to the negative (-) auxiliary battery terminal.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition A46-36 (S) - Body ground Always Same as auxiliary battery voltage *a Front view of wire harness connector
(to Inverter with Converter Assembly) - Disconnect the cable from the negative (-) auxiliary battery terminal.
- Reconnect the A46 inverter with converter assembly connector.
Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
Go to next step
- Check that the service plug grip is not installed.
- CHECK HARNESS AND CONNECTOR (RESISTANCE VALUE OF NODD INSIDE POWER MANAGEMENT CONTROL ECU) WARNING:
Be sure to wear insulated gloves.
- Check that the service plug grip is not installed.NOTE:
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.
- Disconnect the A46 inverter with converter assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition A46-24 (NODD) - Body ground Power switch off 110 to 150 kΩ *a Front view of wire harness connector
(to Inverter with Converter Assembly) - Reconnect the A46 inverter with converter assembly connector.
Result
Proceed to OK NG
Result:
NG
See step 18
Result:
OK
Go to next step
- Check that the service plug grip is not installed.
- CHECK DC/DC CONVERTER FUNCTION
HINT:
The current at the AMD terminal cannot be measured directly because of space limitations. Measure the current flowing at the auxiliary battery instead.
- Connect the AC/DC 400 A probe of the tester to the positive auxiliary battery line.
- Install the service plug grip.
- Connect the cable to the negative (-) auxiliary battery terminal.
- Turn the power switch on (READY) and leave the vehicle as it is until the electric current flowing to the auxiliary battery becomes 10 A or less.
HINT:
If the power switch turns off immediately after it is turned on (READY), auxiliary battery voltage may be low. Recharge the auxiliary battery and perform this procedure again.
- Measure the current flowing from the auxiliary battery with the power switch on (READY), the headlight position switch and blower motor switch in the HI position, and the rear window defogger turned on.
*a Probe Direction *b Current Flowing to Auxiliary Battery *a Probe Direction *b Current Flowing from Auxiliary Battery Standard Current
Item Condition Specified Condition Current flowing from auxiliary battery Power switch on (READY)
(The headlight position switch and blower motor switch are in the HI position, and the rear window defogger is turned on.)0 A or less
(no current from auxiliary battery) - Measure the voltage according to the value(s) in the table below.
Standard Voltage
Item Condition Specified Condition Auxiliary battery voltage Power switch on (READY)
(The headlight position switch and blower motor switch are in the HI position, and the rear window defogger is turned on.)13 to 15 V - Turn the power switch off.
Result
Proceed to OK NG
Result:
NG
REPLACE INVERTER WITH CONVERTER ASSEMBLY.
Refer to COMPONENTS [02/2014 - 11/2016] .
Result:
OK
Go to next step
- CHECK QUANTITY OF HV COOLANT
See step 3
Result Proceed to No leaks are found and the HV coolant level in the inverter reserve tank assembly is above the low line. A No leaks are found and the HV coolant level in the inverter reserve tank assembly is below the low line. B HV coolant leaks are evident. C Result:
B
ADD HV COOLANT
Result:
C
INSPECT FOR HV COOLANT LEAK AND ADD HV COOLANT
Result:
A
Go to next step
- CHECK COOLANT HOSE
See step 4
Result
Proceed to OK NG Result:
NG
REPAIR OR REPLACE COOLANT HOSE
Result:
OK
Go to next step
- PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE ELECTRIC COOLING FAN)
See step 5
Result
Proceed to OK NG Result:
NG
CHECK COOLING FAN SYSTEM.
Refer to Cooling Fan Circuit [02/2014 - 11/2016] .
Result:
OK
Go to next step
- CHECK HV COOLANT (CHECK FOR CONDITIONS THAT MAY HAVE CAUSED FREEZING)
- Connect the Techstream to the DLC3
- Turn the power switch on (IG).
- Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
- Read the freeze frame data item Ambient Temperature using the Techstream.
Powertrain > Hybrid Control > Trouble Codes
- Check if the freeze frame data item Ambient Temperature is below the freezing temperature of the HV coolant.
Result Proceed to Ambient Temperature value is above freezing temperature of the HV coolant. A Ambient Temperature value is below freezing temperature of the HV coolant. B HINT:
- HV coolant (SLLC) with a 30% concentration freezes at -15°C (5°F) and HV coolant (SLLC) with a 50% concentration freezes at -35°C (-31°F).
- If the HV coolant freezes in the inverter radiator or inverter water pump, the coolant temperature in the inverter with converter assembly rises because the HV coolant cannot circulate. As a result, a DTC may be stored.
- A DTC is stored when the inverter water pump impeller cannot rotate due to freezing of the HV coolant.
- If a DTC is stored due to freezing of the HV coolant, the problem cannot be reproduced. Judge whether freezing of the HV coolant occurred according to the freeze point of the HV coolant, HV coolant change history and ambient temperature when the DTC was stored.
- Turn the power switch off.
Result:
A
REPLACE INVERTER WITH CONVERTER ASSEMBLY.
Refer to COMPONENTS [02/2014 - 11/2016] .
Result:
B
Go to next step
- REPLACE HV COOLANT
See step 7
Result:
NEXT
COMPLETED
- INSPECT POWER MANAGEMENT CONTROL ECU (RESISTANCE VALUE OF NODD INSIDE POWER MANAGEMENT CONTROL ECU)
- Disconnect the A60, A61, F15 and F16 power management control ECU connectors.
*a Component without harness connected
(Power Management Control ECU) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition A60-23 (NODD) - F15-6 (E1) Power switch off 110 to 150 kΩ - Reconnect the A60, A61, F15 and F16 power management control ECU connectors.
Result
Proceed to OK NG
Result:
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
NG
REPLACE POWER MANAGEMENT CONTROL ECU.
Refer to COMPONENTS [02/2014 - 11/2016] .
- Disconnect the A60, A61, F15 and F16 power management control ECU connectors.
- CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MG1) WARNING:
Be sure to wear insulated gloves.
- Check that the service plug grip is not installed.NOTE:
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.
- Remove the inverter terminal cover from the inverter with converter assembly.
- Disconnect the generator cable from the inverter with converter assembly.
*1 Generator Cable
(Inverter with Converter Assembly Side) - Using a megohmmeter set to 500 V, measure the insulation resistance according to the value(s) in the table below.NOTE:
Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.
Standard Resistance
Tester Connection Condition Specified Condition s2-3 (U) - Body ground and shield ground Power switch off 100 MΩ or higher s2-2 (V) - Body ground and shield ground Power switch off 100 MΩ or higher s2-1 (W) - Body ground and shield ground Power switch off 100 MΩ or higher *1 Shield Ground *a Generator Cable
(Inverter with Converter Assembly Side) - Connect the generator cable.
- Install the inverter terminal cover.
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
- Check that the service plug grip is not installed.
- CHECK HYBRID VEHICLE TRANSAXLE ASSEMBLY (MG2) WARNING:
Be sure to wear insulated gloves.
- Check that the service plug grip is not installed.NOTE:
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.
- Remove the inverter terminal cover from the inverter with converter assembly.
- Disconnect the motor cable from the inverter with converter assembly.
*1 Motor Cable
(Inverter with Converter Assembly Side) - Using a megohmmeter set to 500 V, measure the insulation resistance according to the value(s) in the table below.NOTE:
Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.
Standard Resistance
Tester Connection Condition Specified Condition r2-3 (U) - Body ground and shield ground Power switch off 100 MΩ or higher r2-2 (V) - Body ground and shield ground Power switch off 100 MΩ or higher r2-1 (W) - Body ground and shield ground Power switch off 100 MΩ or higher *1 Shield Ground *a Motor Cable
(Inverter with Converter Assembly Side) - Connect the motor cable.
- Install the inverter terminal cover.
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
- Check that the service plug grip is not installed.
- CHECK REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (MGR) WARNING:
Be sure to wear insulated gloves.
- Check that the service plug grip is not installed.NOTE:
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.
- Remove the inverter terminal cover from the inverter with converter assembly.
- Disconnect the No. 6 floor wire (rear motor cable) from the inverter with converter assembly.
*1 No. 6 Floor Wire (Rear Motor Cable)
(Inverter with Converter Assembly Side) - Using a megohmmeter set to 500 V, measure the insulation resistance according to the value(s) in the table below.NOTE:
Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.
Standard Resistance
Tester Connection Condition Specified Condition R2-3 (R-U) - Body ground and shield ground Power switch off 10 MΩ or higher R2-2 (R-V) - Body ground and shield ground Power switch off 10 MΩ or higher R2-1 (R-W) - Body ground and shield ground Power switch off 10 MΩ or higher *1 Shield Ground *a No. 6 Floor Wire (Rear Motor Cable)
(Inverter with Converter Assembly Side) - Connect the No. 6 floor wire (rear motor cable).
- Install the inverter terminal cover.
Result
Proceed to OK NG
Result:
OK
REPLACE INVERTER WITH CONVERTER ASSEMBLY.
Refer to COMPONENTS [02/2014 - 11/2016] .
Result:
NG
Go to next step
- Check that the service plug grip is not installed.
- CHECK REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (NO. 6 FLOOR WIRE (REAR MOTOR CABLE) CONNECTION CONDITION):
Refer to PROCEDURE - Step 33 (02/2014 - 11/2015).
Refer to PROCEDURE - Step 33 (11/2015 - 11/2016).
Result Proceed to The terminals are connected securely and there are no contact problems. There are no arc marks. A The terminals are not connected securely and there is a contact problem. There are arc marks. B The terminals are not connected securely and there is a contact problem. There are no arc marks. C The terminals are connected securely and there are no contact problems. There are arc marks. B Result:
B
REPLACE MALFUNCTIONING PARTS
Result:
C
CONNECT SECURELY
Result:
A
Go to next step
- CHECK NO. 6 FLOOR WIRE (REAR MOTOR CABLE)
Refer to PROCEDURE - Step 34 (02/2014 - 11/2015).
Refer to PROCEDURE - Step 34 (11/2015 - 11/2016).
Result
Proceed to OK NG Result:
NG
REPLACE NO. 6 FLOOR WIRE.
Refer to COMPONENTS [02/2014 - 11/2016] .
Result:
OK
Go to next step
- CHECK EXTENSION WIRE ASSEMBLY
Refer to PROCEDURE - Step 35 (02/2014 - 11/2015).
Refer to PROCEDURE - Step 35 (11/2015 - 11/2016).
Result
Proceed to OK NG Result:
OK
REPLACE REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY.
Refer to COMPONENTS [02/2014 - 11/2016] .
Result:
NG
REPLACE EXTENSION WIRE ASSEMBLY.
Refer to COMPONENTS [02/2014 - 11/2016] .
- CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - FUSIBLE LINK BLOCK ASSEMBLY) WARNING:
Be sure to wear insulated gloves.
- Check that the service plug grip is not installed.NOTE:
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.
- Disconnect the A46 inverter with converter assembly connector.
- Disconnect the fusible link block assembly.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition A46-36 (S) or M43-1 - Body ground and other terminals Power switch off 10 kΩ or higher *a Front view of wire harness connector
(to Inverter with Converter Assembly)*b Front view of wire harness connector
(to Fusible Link Block Assembly) - Install the fusible link block assembly.
- Reconnect the A46 inverter with converter assembly connector.
Result
Proceed to OK NG
Result:
NG
See step 27
Result:
OK
Go to next step
- Check that the service plug grip is not installed.
- REPLACE FUSIBLE LINK BLOCK ASSEMBLY
- Replace the fusible link block assembly.
Result:
NEXT
REPLACE INVERTER WITH CONVERTER ASSEMBLY.
Refer to COMPONENTS [02/2014 - 11/2016] .
- REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
NEXT
REPLACE FUSE (DC/DC-S)