Inspection Procedure

1. Connect the hand-held tester (with CAN VIM) to the DLC3.
2. Turn the power switch ON (IG) and press the hand-held tester main switch ON.
3. Read the DATA LIST according to the displays on the tester.

   Power source control ECU: 

   Fig 1: Power Source Control ECU - Data List

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: ON (power switch is ON (READY)) appears on the screen. 

1. NG: Go to step 2 
2. OK: GO TO NEXT STEP 

   REPLACE POWER SOURCE CONTROL ECU 

1. Disconnect the P6 and H14 ECU connectors.
2. Measure the resistance of the wire harness side connectors.

   Standard: 

   TESTER CONNECTION AND SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   P6-22 (RDY) - H14-28 (RDY)	Below 1 Ω
   P6-22 (RDY) or H14-28 (RDY) - Body ground	10 kΩ or higher

   Fig 2: Disconnecting P6 And H14 ECU Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
2. OK: GO TO NEXT STEP 

1. After replacing the power source control ECU with a normally functioning ECU, check that the hybrid vehicle control system can start normally.

   OK: Hybrid vehicle control system can start normally. 

1. NG: Go to HYBRID CONTROL SYSTEM (See  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
2. OK: GO TO NEXT STEP 

   NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)