DTC P0ADB-227: Hybrid Battery Positive Contactor Control Circuit Low: Procedure

1. Disconnect connector H3 from the power management control ECU.
2. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying Rear View Of Wire Harness Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   H3-4 (SMRB) - Body ground	Power switch off	19.0 to 35.5 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Power Management Control ECU)

3. Connect the power management control ECU connector.

NG → See step   2 

OK → See step   4 

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 service information because this may cause a malfunction.

2. Remove the upper hybrid battery cover sub-assembly.
3. Disconnect connector i3 from the hybrid battery junction block assembly.
4. Disconnect connector H3 from the power management control ECU.
5. Measure the resistance according to the value(s) in the table below.
   Fig 2: Identifying H3-4 (SMRB) And i3-4 (SMRB) - Body ground and Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   H3-4 (SMRB) and i3-4 (SMRB) - Body ground and other terminals	Power switch off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Power Management Control ECU)
   *b	Rear view of wire harness connector (to Hybrid Battery Junction Block Assembly)

6. Connect the power management control ECU connector.
7. Connect the hybrid battery junction block assembly connector.
8. Install the upper hybrid battery cover sub-assembly.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   3