DTC P0D1A-18: Hybrid/EV Battery Pack Coolant Control Valve "B" Control Circuit Low Circuit Current Below Threshold; DTC P0D1A-19: Hybrid/EV Battery Pack Coolant Control Valve "B" Control Circuit High Circuit Current Above Threshold; DTC P1F69-00: Hybrid/EV Battery Pack Coolant Control Valve "B" Monitor Performance [12/2023 - ]: Procedure

Pre-procedure1

• Check that the service plug grip is not installed.
  NOTE:

  After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair Service Information because this may cause a malfunction.

• Disconnect the Battery ECU assembly connector.

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  NOTE:

  Before disconnecting the connector, check that it is not loose or disconnected.

• Disconnect the No. 1 magnet valve assembly connector.

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  NOTE:

  Before disconnecting the connector, check that it is not loose or disconnected.

• Measure the resistance according to the value(s) in the table below.

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  j9-4 (HPR+) - j4-20 (SMA0)	Ignition switch off	Below 1 Ω	Ω
  j9-1 (HPR-) - j4-21 (SMB0)	Ignition switch off	Below 1 Ω	Ω
  j9-5 (HPL+) - j4-22 (SMC0)	Ignition switch off	Below 1 Ω	Ω
  j9-2 (HPL-) - j4-23 (SMD0)	Ignition switch off	Below 1 Ω	Ω
  j9-4 (HPR+) or j4-20 (SMA0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ
  j9-1 (HPR-) or j4-21 (SMB0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ
  j9-5 (HPL+) or j4-22 (SMC0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ
  j9-2 (HPL-) or j4-23 (SMD0) - Body ground and other terminals	Ignition switch off	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• Reconnect the No. 1 magnet valve assembly connector.
• Reconnect the battery ECU assembly connector.

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

Pre-procedure1

• Check that the service plug grip is not installed.
  NOTE:

  After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair Service Information because this may cause a malfunction.

• Disconnect the No. 1 magnet valve assembly connector.

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  NOTE:

  Before disconnecting the connector, check that it is not loose or disconnected.

• Measure the resistance according to the value(s) in the table below.

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  j9-4 (HPR+) - j9-1 (HPR-)	Ignition switch off	5 to 25 Ω	Ω
  j9-5 (HPL+) - j9-2 (HPL-)	Ignition switch off	5 to 25 Ω	Ω
  j9-4 (HPR+) - j9-5 (HPL+)	Ignition switch off	10 kΩ or higher	kΩ

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *a	Component without harness connected (No. 1 Magnet Valve Assembly)

  Result

  Proceed to
  OK
  NG

Post-procedure1

• Reconnect the No. 1 magnet valve assembly connector.

Result: 

NG 

REPLACE NO. 1 MAGNET VALVE ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

Result: 

OK 

See step  3

Pre-procedure1

• Check that the service plug grip is not installed.
  NOTE:

  After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair Service Information because this may cause a malfunction.

• Connect the SST.

  HINT: 

  Refer to Instructions for Connecting SST [12/2023 - ]

• Connect the cable to the negative (-) auxiliary battery terminal.

• Check the output waveform.
  1. Connect an oscilloscope to terminal.

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

     *a	Component with harness connected (Battery ECU Assembly)

  2. Enter the following menus.

     Powertrain > HV Battery > Active Test 

     Tester Display
     Hybrid/EV Battery Refrigerant Cooling Valve

  3. Check the signal waveform according to the condition(s) in the table below.

     Item	Condition
     Measurement terminal	j4-20 (SMA0) - j4-21 (SMB0) and j4-22 (SMC0) - j4-23 (SMD0)
     Tool setting	10 V/DIV., 5 ms./DIV.
     Vehicle condition	Ignition switch ON, during Active Test

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

     *a	Waveform 1

     NOTE:

     Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

     Result

     Result	Proceed to
     Normal (The pulse output of waveform 1)	A
     No pulse generation	B

Post-procedure1

• Turn the ignition switch off.
• Disconnect the cable from the negative (-) auxiliary battery terminal.
• Disconnect the SST.

Result: 

A 

REPLACE NO. 1 MAGNET VALVE ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

Result: 

B 

REPLACE BATTERY ECU ASSEMBLY. Refer to  REMOVAL [12/2023 - ]