DTC B22AB: Open in Starter Switch Terminal: Procedure

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the A69 ECU connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   A69-12 (STSW) - Body ground	Engine switch on (IG) → cranking	Below 1 V → 8 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (PASSENGER SIDE JUNCTION BLOCK - MAIN BODY ECU) 

OK → REPLACE PASSENGER SIDE JUNCTION BLOCK (ELECTRIC POWER CONTROL ECU)