Inspection Procedure

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

   Power source control ECU 

   ITEM NORMAL CONDITION CHART
   
   

   Tester Display	Measurement Item / Display	Normal Condition	Diagnostic Note
   Start Switch1	Start Switch 1 / ON or OFF	ON: Power switch ON (IG) OFF: Power switch OFF	-
   Start Switch2	Start Switch 2 / ON or OFF	ON: Power switch ON (IG) OFF: Power switch OFF	-

   OK : ON (power switches 1 and 2 are ON (IG)) appears on the screen 

OK : REPLACE POWER SOURCE CONTROL ECU 

NG : GO TO NEXT STEP 

1. Disconnect the P11 power switch connector.
2. Disconnect the P6 ECU connector.
Fig 1: Identifying Power Switch Control ECU & Power Switch Connectors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   RESISTANCE TESTER CONNECTION SPECIFICATION
   
   

   Tester Connection	Specified Condition
   P11-5 (SS1) - P6-14 (SSW1)	Below 1 Ω
   P11-7 (SS2) - P6-37 (SSW2)	Below 1 Ω
   P11-6 (GND)- Body ground	Below 1 Ω
   P11-5 (SS2) or P6-14 (SSW1) - Body ground	10 kΩ or higher
   P11-7 (SS2) or P6-37 (SSW2) - Body ground	10 kΩ or higher

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK : GO TO NEXT STEP 

1. Remove the power switch.
Fig 2: Identifying Power Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the switch.

   Standard resistance 

   RESISTANCE TESTER CONNECTION SPECIFICATION
   
   

   Tester Connection	Switch Condition	Specified Condition
   7 (SS2) - 6 (GND)	Pushed	Below 1 Ω
   5 (SS1) - 6 (GND)	Pushed	Below 1 Ω
   7 (SS2) - 6 (GND)	Released	10 kΩ or higher
   5 (SS1) - 6 (GND)	Released	10 kΩ or higher

NG : REPLACE POWER SWITCH 

OK : REPLACE POWER SOURCE CONTROL ECU