Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream main switch on
3. Select the item below in the Data List, and read the display on the Techstream

   HINT

   When using the Techstream with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1 5 second intervals or less until communication between the Techstream and vehicle starts

   Power Source Control 

   POWER SOURCE CONTROL RANGE REFERENCE
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   IG1 Relay Monitor (Outside)	Status of IG1 relay monitor (outer) / ON or OFF	ON Engine switch on (IG) (IG1 relay is ON) OFF Engine switch off (IG1 relay is OFF)	-

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

NG: Go to step  3

OK: Go to next Step 

1. Clear the DTCs (See DIAGNOSIS SYSTEM  )
2. Turn the engine switch on (IG)
3. Depress the brake pedal
4. After 10 seconds have elapsed, check if the trouble occurs again.
5. Check for DTC again

   OK: DTC B2282 is not output. 

NG: REPLACE POWER SOURCE CONTROL ECU 

OK: USE SIMULATION METHOD TO CHECK  (See HOW TO PROCEED WITH TROUBLESHOOTING )

1. Disconnect the RD and RA connectors
2. Measure the resistance according to the value (s) in the table below.

   Standard Resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   RD-6 - RA-5 or RD-7	Always	68 to 175 Ω
   RD-6 - RD-12	Always	Below 1 Ω
   RD-6 - Body ground	Always	10 kΩ or higher
   RA-5 or RD-7 - Body ground	Always	Below 1 Ω

Fig 1: Identifying RD And RA Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH) 

OK: Go to next Step 

1. Disconnect the LD connector
2. Measure the resistance according to the value (s) in the table below.

   Standard Resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   LD-13 - LD-8 or LD-9	Always	68 to 250 a at 20°C (68°F)
   LD-13 - Body ground	Always	10 kΩ or higher

Fig 2: Identifying LD Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE MAIN BODY ECU LH (COWL SIDE JUNCTION BLOCK LH) 

OK: Go to next Step 

1. Disconnect the J55 connector
2. Measure the resistance according to the value (s) in the table below

   Standard Resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   J55-34 (IG1D) - RD-6	Always	Below 1 Ω
   J55-34 (IG1D) or RD-6-Body ground	Always	10 kΩ or higher

Fig 3: Identifying J55 Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CONTROL ECU - COWL SIDE JUNCTION BLOCK RH) 

OK: Go to next Step 

1. Measure the resistance according to the value (s) in the table below

   Standard Resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   RD-12 - LD-13	Always	Below 1 Ω
   RD-12 or LD-13 - Body ground	Always	10 kΩ or higher
   LD-9 - Body ground	Always	Below 1 Ω

Fig 4: Identifying RD And LD Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (COWL SIDE JUNCTION BLOCK RH - COWL SIDE JUNCTION BLOCK LH) 

OK: REPLACE POWER SOURCE CONTROL ECU