DTC P3226-562: DC/DC Boost Converter Temperature Sensor; DTC P3226-563: DC/DC Boost Converter Temperature Sensor: Procedure

CHECK DTC OUTPUT (HV)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

Check if DTCs are output.

Result

Result	Proceed to
P3226-562 or 563 only is output.	A
Any of the following DTCs are also output.	B

DTC No.	Relevant Diagnosis
P0A93-346	Inverter cooling system malfunction

HINT:

Turning the power switch on (IG) with the service plug grip and inverter cover removed causes interlock switch system DTC P0A0D-350 to be output.
P3226-562 or P3226-563 may be output due to a malfunction which causes the DTCs in the table above to be output. In this case, first troubleshoot the output DTCs in the table above. Then, perform a reproduction test to check that no DTCs are output.

B → See step 25

A: Go to next step

CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR). Refer to PROCEDURE - Step 4
NG → CONNECT SECURELY

OK: Go to next step
CHECK QUANTITY OF HV COOLANT. Refer to PROCEDURE - Step 3
C → CHECK FOR COOLANT LEAKS AND ADD COOLANT

B → ADD COOLANT

A: Go to next step
CHECK COOLANT HOSE. Refer to PROCEDURE - Step 4
NG → CORRECT THE PROBLEM

OK: Go to next step
PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE WATER PUMP). Refer to PROCEDURE - Step 5
NG → See step 8

OK: Go to next step
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE ELECTRIC COOLING FAN). Refer to PROCEDURE - Step 6
NG → See step 27

OK: Go to next step
CHECK HV COOLANT (CHECK FOR CONDITIONS THAT MAY HAVE CAUSED FREEZING). Refer to PROCEDURE - Step 7
NG → See step 19

OK → See step 26
PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE WATER PUMP). Refer to PROCEDURE - Step 8
B → ADD COOLANT

A: Go to next step
CHECK FUSE (IGCT NO. 3). Refer to PROCEDURE - Step 9
NG → See step 14

OK: Go to next step
CHECK CONNECTOR CONNECTION CONDITION (WATER PUMP WITH MOTOR ASSEMBLY CONNECTOR). Refer to PROCEDURE - Step 10
NG → CONNECT SECURELY

OK: Go to next step
CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR). Refer to PROCEDURE - Step 3
NG → CONNECT SECURELY

OK: Go to next step
CHECK HARNESS AND CONNECTOR (WATER PUMP WITH MOTOR ASSEMBLY CIRCUIT). Refer to PROCEDURE - Step 12
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step
CHECK WATER PUMP WITH MOTOR ASSEMBLY. Refer to PROCEDURE - Step 13
NG → See step 28

OK → See step 29
CHECK CONNECTOR CONNECTION CONDITION (WATER PUMP WITH MOTOR ASSEMBLY CONNECTOR). Refer to PROCEDURE - Step 14
NG → See step 21

OK: Go to next step
CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR). Refer to PROCEDURE - Step 3
NG → See step 22

OK: Go to next step
CHECK HARNESS AND CONNECTOR (WATER PUMP WITH MOTOR ASSEMBLY CIRCUIT). Refer to PROCEDURE - Step 16
NG → See step 23

OK: Go to next step
CHECK WATER PUMP WITH MOTOR ASSEMBLY. Refer to PROCEDURE - Step 17
NG → See step 24

OK: Go to next step
REPLACE HYBRID VEHICLE CONTROL ECU. Refer to PROCEDURE - Step 18
NEXT → REPLACE FUSE (IGCT NO. 3)
REPLACE HV COOLANT. Refer to PROCEDURE - Step 19
NEXT: Go to next step
CHECK WATER PUMP WITH MOTOR ASSEMBLY. Refer to PROCEDURE - Step 20
NG → See step 28

OK → COMPLETED
CONNECT SECURELY. Refer to PROCEDURE - Step 21
NEXT → REPLACE FUSE (IGCT NO. 3)
CONNECT SECURELY. Refer to PROCEDURE - Step 22
NEXT → REPLACE FUSE (IGCT NO. 3)
REPAIR OR REPLACE HARNESS OR CONNECTOR. Refer to PROCEDURE - Step 23
NEXT → REPLACE FUSE (IGCT NO. 3)
REPLACE WATER PUMP WITH MOTOR ASSEMBLY. Refer to PROCEDURE - Step 24
NEXT → REPLACE FUSE (IGCT NO. 3)
GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART
REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to COMPONENTS
CHECK COOLING FAN SYSTEM. Refer to Cooling Fan Circuit
REPLACE WATER PUMP WITH MOTOR ASSEMBLY. Refer to COMPONENTS
REPLACE HYBRID VEHICLE CONTROL ECU. Refer to COMPONENTS