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
   ACC RELAY MON	ACC relay monitor / ON or OFF	ON: Power switch ON (ACC) OFF: Power switch OFF	-

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

OK : REPLACE POWER SOURCE CONTROL ECU 

NG : GO TO NEXT STEP 

1. Remove the ACC relay.
2. Measure the resistance of the relay.

   Standard resistance 

   RESISTANCE TESTER CONNECTION SPECIFICATION
   
   

   Tester Connection	Specified Condition
   3 - 5	10 kΩ or higher
   3 - 5	Below 1 Ω (when battery voltage is applied to terminals 1 and 2)

   Fig 1: Measuring Resistance Of ACC Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPLACE ACC RELAY 

OK : GO TO NEXT STEP 

1. Remove the ACC relay.
2. Disconnect the P6 connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   RESISTANCE TESTER CONNECTION SPECIFICATION
   
   

   Tester Connection	Specified Condition
   A12-1 - P6-11 (ACCD)	Below 1 Ω
   A12-2 - Body ground	Below 1 Ω
   A12-1 or P6-11 (ACCD) - Body ground	10 kΩ or higher

   Fig 2: Identifying ACC Relay & Power Source Control ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK : REPLACE POWER SOURCE CONTROL ECU