DTC P0C3E-628: DC / DC Converter Temperature Sensor "B" Range / Performance; DTC P0C41-627: DC / DC Converter Temperature Sensor "B" Intermittent / Erratic [11/2016 - ]: Procedure

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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

Result	Proceed to
P0C3E-628 or P0C41-627 only is output, or DTCs except the ones in the table below are also output.	A
Any of the following DTCs are also output.	B

Relevant DTC
P0A93-346	Inverter Cooling System Performance
P0C73-776	Motor Electronics Coolant Pump "A" Control Performance
P314A-828	Inverter Coolant Pump Speed Signal

HINT:

P0C3E-628 or P0C41-627 may be stored due to a malfunction which also causes DTCs in the preceding table to be stored. In this case, first troubleshoot the output DTCs in the preceding table. Then, perform a test to attempt to reproduce the problems, and check that no DTCs are output.

Turn the power switch off.

Result: 2

GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2016 - 10/2017] Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2017 - ]

Result: 1

See step 2

CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR)

Refer to PROCEDURE - Step 3

Result

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: 2

CONNECT SECURELY

Result: 3

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result: 1

See step 3

CHECK QUANTITY OF HV COOLANT

Refer to PROCEDURE - Step 3

Result

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: 2

ADD HV COOLANT

Result: 3

INSPECT FOR HV COOLANT LEAK AND ADD HV COOLANT

Result: 1

See step 4

CHECK COOLANT HOSE
Refer to PROCEDURE - Step 4

Result

Proceed to

OK

NG

Result: 2

NG

REPAIR OR REPLACE COOLANT HOSE

Result: 1

OK

See step 5
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE ELECTRIC COOLING FAN)
Refer to PROCEDURE - Step 5

Result

Proceed to

OK

NG

Result: 2

NG

CHECK COOLING FAN SYSTEM. Refer to Cooling Fan Circuit [11/2016 - ]

Result: 1

OK

See step 6

Proceed to
OK
NG

Proceed to
OK
NG

CHECK HV COOLANT (CHECK FOR CONDITIONS THAT MAY HAVE CAUSED FREEZING)

Refer to PROCEDURE - Step 6

Result

Result	Proceed to
Ambient Temperature value is below freezing temperature of the HV coolant.	A
Ambient Temperature value is above freezing temperature of the HV coolant.	B

Result: 2

REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to COMPONENTS [11/2016 - ]

Result: 1

See step 7

REPLACE HV COOLANT
Refer to PROCEDURE - Step 7

Result

Proceed to

NEXT

Result: 1

NEXT

COMPLETED