DTC P324E-788: MG-ECU Power Relay Intermittent Circuit [08/2013 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Check for DTCs.

   Result

   Result	Proceed to
   P324E-788 only is output.	A
   U0110-159, 160, 656, 657 are also output.	B

5. Turn the power switch off.

B → See step   4 

A: Go to next step 

NG → CONNECT SECURELY 

OK: Go to next step 

1. Check that the service plug grip is not installed.
   NOTE:

   After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the service information because this may cause a malfunction.

2. Disconnect the A14 inverter with converter assembly connector.
3. Remove the IGCT relay from the No. 2 engine room relay block.
4. Measure the resistance 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	*2	IGCT Relay
   *a	Front view of wire harness connector (to Inverter with Converter Assembly)	-	-

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A14-30 (+B) - 5 (IGCT relay)	Power switch off	Below 1 Ω
   A14-31 (+B2) - 5 (IGCT relay)	Power switch off	Below 1 Ω
   A14-10 (GND1) - Body ground	Power switch off	Below 1 Ω
   A14-11 (GND2) - Body ground	Power switch off	Below 1 Ω

5. Install the IGCT relay.
6. Reconnect the A14 inverter with converter assembly connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   5