DTC B2036: Power Supply Relay Malfunction Open: Procedure

1. Disconnect the cable from the negative (-) auxiliary battery terminal.
   Fig 1: Checking L133 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   WARNING:

   Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

2. Disconnect the seat belt control ECU connector.
3. Connect the cable to the negative (-) auxiliary battery terminal.
4. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   L133-7 (+B) - Body ground	Power switch off	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Seat Belt Control ECU)

5. Disconnect the cable from the negative (-) auxiliary battery terminal.
6. Reconnect seat belt control ECU connector.
7. Connect the cable to the negative (-) auxiliary battery terminal.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (+B CIRCUIT) 

OK → See step   2