Inspection Procedure

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

   Power source control ECU 

   ITEM NORMAL CONDITION CHART
   
   

   Item	Measurement Item / Range (Display)	Normal Condition	Diagnostic Note
   IG2 RELAY MON 2	IG2 inner relay monitor / ON or OFF	ON: Power switch ON (IG) OFF: Power switch OFF	-

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

OK : REPLACE POWER SOURCE CONTROL ECU 

NG : GO TO NEXT STEP 

1. Disconnect the 3I junction block connector.
2. Disconnect the P6 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   RESISTANCE TESTER CONNECTION SPECIFICATION
   
   

   Tester Connection	Specified Condition
   3I-2 - P6-35 (IG2D)	Below 1 Ω
   3I-3 - Body ground	Below 1 Ω

   Fig 1: Identifying P6 ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK : GO TO NEXT STEP 

1. Disconnect the 3I and 3K junction block connectors.
2. Measure the resistance of the junction block connectors.

   Standard resistance 

   RESISTANCE TESTER CONNECTION SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   3K-1 - 3I-4	When battery voltage is not applied to terminals 3I-2 and 3I-3	10 kΩ or higher
   3K-1 - 3I-4	When battery voltage is applied to terminals 3I-2 and 3I-3	Below 1 Ω

   Fig 2: Identifying Engine Room Relay Block

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPLACE ENGINE ROOM RELAY BLOCK 

OK : REPLACE POWER SOURCE CONTROL ECU