DTC P3110-223: HV Main Relay [12/2014 - ]: Procedure

1. Remove the IGCT relay from the No. 2 engine room relay block and No. 2 junction block assembly.
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3 - 5	Auxiliary battery voltage is not applied between terminals 1 and 2	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	IGCT Relay

3. Install the IGCT relay.

NG → REPLACE RELAY (IGCT) 

OK: Go to next step 

1. Remove the IGCT relay from the No. 2 engine room relay block and No. 2 junction block assembly.
2. Disconnect connector A38 and A39 from the hybrid vehicle control ECU.
3. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *1	No. 2 Engine Room Relay Block and No. 2 Junction Block Assembly	*2	IGCT relay
   *a	Rear view of wire harness connector (to Hybrid Vehicle Control ECU)	-	-

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A39-4 (+B1), A38-1 (+B2) or 5 (IGCT relay) - Body ground	Ignition switch off	Below 1 V

4. Install the IGCT relay.
5. Connect the hybrid vehicle control ECU connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   3