Inspection Procedure

1. Remove the D/C CUT and IG2 MAIN fuses from the engine room No. 1 relay block.
2. Remove the IGN fuse from the engine room No. 2 relay block.
3. Remove the MPX-B1 and IG2 fuses from the passenger side junction block.
4. Measure the resistance of the fuses.

   Standard resistance: 

   Below 1 Ω 

NG: REPLACE FUSE 

OK: Go to next step 

1. Remove the IG2 relay from the engine room No. 1 relay block.
2. Measure the resistance of the relay.
   Fig 1: Measuring Resistance Of Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

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

NG: REPLACE IG2 RELAY 

OK: Go to next step 

1. Disconnect the T13 ECU connector.
   Fig 2: Disconnecting T13 ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance and voltage of the wire harness side connector.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   T13-14 (GND) - Body ground	Below 1 Ω

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   T13-2 (IG2) - Body ground	Ignition switch OFF	Below 1 V
   	Ignition switch ON	10 to 14 V
   T13-1 (CPUB) -Body ground	Always

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE TRANSPONDER KEY ECU