DTC P0A85-123: EV Battery No. 1 Pack Cooling Fan 1 Control Circuit High: Procedure

B → See step   7 

A: Go to next step 

1. 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 information because this may cause a malfunction.

2. Connect the cable to the negative (-) auxiliary battery terminal.
3. Turn the power switch on (IG).
4. Using a service wire, connect terminals A22-11 (SI0) and C21-17 (E01) of the power management control ECU connector.
   Fig 1: Identifying Power Management Control ECU Connector & Service Wire

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Power Management Control ECU)

5. Measure the voltage according to the value(s) in the table below.
   Fig 2: Measuring Voltage Of Motor Compartment Main Wire To Floor Wire Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *a

   Intermediate Connector Connected (Motor Compartment Main Wire to Floor Wire)

   -

   -

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   AG1-13 - Body ground	Battery cooling blower is operating	6 V or less

   NOTE:

   Turning the power switch on (IG) with the service grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

6. Turn the power switch off.
7. Disconnect the cable to the negative (-) auxiliary battery terminal.
8. Disconnect the service wire.

OK → See step   5 

NG → See step   3 

1. Disconnect the battery cooling blower assembly connector.
2. Connect the cable to the negative (-) auxiliary battery terminal.
3. Turn the power switch on (IG).
4. Measure the voltage according to the value(s) in the table below.
   Fig 3: Measuring Voltage Of Battery Cooling Blower Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A37-2 (VM0) - A37-4 (GND0)	Power switch on (IG)	6 V or less

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Battery Cooling Blower Assembly)

   HINT: 

   Turning the power switch on (IG) with the battery cooling blower assembly connector disconnected causes the DTC P0A84-123 to be stored. Clear the DTCs using the Techstream after performing this inspection.

5. Turn the power switch off.
6. Disconnect the cable to the negative (-) auxiliary battery terminal.
7. Connect the battery cooling blower assembly connector.

NG → See step   6 

OK: Go to next step 

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