DTC P0ADB-227: Hybrid Battery Positive Contactor Control Circuit Low [10/2015 - ]: Procedure

1. Disconnect the D135 hybrid vehicle control ECU assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Rear view of wire harness connector (to Hybrid Vehicle Control ECU Assembly)

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D135-4 (SMRB) - Body ground	Power switch off	25.0 to 59.0 Ω

3. Reconnect the D135 hybrid vehicle control ECU assembly connector.

Result: 

OK 

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY 

(Refer to COMPONENTS [10/2015 - ] )

Result: 

NG 

See step  2

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 otherwise instructed because this may cause a malfunction.

2. Remove the No. 4 hybrid battery shield panel (Refer to PROCEDURE - Step 8 ).
3. Disconnect the K23 hybrid battery junction block assembly connector.
4. Disconnect the D135 hybrid vehicle control ECU assembly connector.
5. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D135-4 (SMRB) and K23-1 (SMRB) - Body ground and other terminals	Power switch off	10 kΩ or higher

6. Reconnect the D135 hybrid vehicle control ECU assembly connector.
7. Reconnect the K23 hybrid battery junction block assembly connector.
8. Install the No. 4 hybrid battery shield panel.

Result: 

OK 

REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY 

(Refer to COMPONENTS [10/2014 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR