DTC P0AD3-123: Hybrid Battery Pack Cooling Fan 3 Control Circuit High: Procedure

B → See step   11 

A: Go to next step 

1. Disconnect the cable from the negative (-) battery terminal.
2. Check that the service plug grip is not installed.
   NOTE:

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

3. Remove the battery cover. Refer to REMOVAL .
4. Remove the battery smart unit. Refer to REMOVAL .
   NOTE:

   Do not disconnect the battery smart unit connector.

5. Connect the cable to the negative (-) battery terminal.
6. Connect the Techstream to the DLC3.
7. Turn the ignition switch to ON and the Techstream on.
8. Enter the following menus: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.
9. Select each air volume mode (1 to 6) in the "Driving the Battery Cooling Fan" active test to operate the battery cooling blower assembly.
10. Measure the voltage according to the value(s) in the table below while the battery cooling blower is operating.
    Fig 1: Checking Harness And Connector (VM2 Voltage)

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Standard Voltage

    Tester Connection	Switch Condition	Specified Condition
    z18-1 (VM2) - z21-5 (GND)	Ignition switch ON	10 V or less

    TEXT IN ILLUSTRATION
    
    

    *1	Component with harness connected (Battery Smart Unit)

    NOTE:

    If the ignition switch is turned ON with the service plug grip removed, DTC P0A0D-350 for the interlock switch system will be stored. If this DTC is output, clear the DTC using the Techstream. Refer to DTC CHECK / CLEAR .

    HINT: 

    Compare the values in each air volume mode (1 to 6).

NG → See step   6 

OK: Go to next step 

NG → See step   9 

OK: Go to next step 

NG → See step   13 

OK: Go to next step 

NG → See step   8 

OK → See step   14 

B → See step   15 

A: Go to next step 

1. Disconnect the cable from the negative (-) battery terminal.
2. Check that the service plug grip is not installed.
   NOTE:

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

3. Remove the battery cover. Refer to REMOVAL .
4. Disconnect the z18 connector from the battery smart unit.
5. Disconnect the O47 connector from the battery cooling blower (No. 2).
   Fig 2: Identifying Battery Cooling Blower Assembly (No. 2) & Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Measure the resistance according to the value(s) in the table below.
   Fig 3: Checking Harness And Connector (Battery Smart Unit - Battery Cooling Blower Assembly [No. 2])

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance (Check for Open)

   Tester Connection	Switch Condition	Specified Condition
   O47-2 (VM2) - z18-1 (VM2)	Ignition switch off	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Switch Condition	Specified Condition
   O47-2 (VM2) or z18-1 (VM2) - O47-1 (IG2)	Ignition switch off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Rear view of wire harness connector (to Battery Smart Unit)
   *2	Front view of wire harness connector (to Battery Cooling Blower Assembly [No. 2])

NG → See step   10 

OK → See step   13 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 2 BATTERY PACK WIRE) 

OK → See step   13 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 2 BATTERY PACK WIRE) 

OK → See step   12 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 2 BATTERY PACK WIRE) 

OK → REPAIR OR REPLACE HARNESS OR CONNECTOR