P3232

L110F HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P3232-749: Open or Short to B+ in Blocking of HV Gate Connection
P3232-749 - Open or Short to B+ in Blocking of HV Gate Connection

DESCRIPTION

The hybrid vehicle control ECU sends a shutdown signal to the inverter with converter assembly (MG ECU) to shut down the power supply to MG2 and MG1.





WIRING DIAGRAM





INSPECTION PROCEDURE

HINT
When attempting to reproduce the problem, turning the power switch on (IG) and off repeatedly makes it easier to reproduce the problem. Do not repeatedly turn the power switch on (READY) and off as this will activate a system main relay overheat protection function.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - INVERTER WITH CONVERTER ASSEMBLY)

CAUTION:
Be sure to wear insulated gloves.

(a) Turn the power switch off.





(b) Remove the service plug grip Hybrid Control System.

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

(c) Disconnect connector A76 from the hybrid vehicle control ECU.

(d) Disconnect the low voltage connector from the inverter with converter assembly.

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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. CHECK INVERTER WITH CONVERTER ASSEMBLY

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





Standard resistance:





NG -- REPLACE INVERTER WITH CONVERTER ASSEMBLY Installation

OK -- REPLACE HYBRID VEHICLE CONTROL ECU Components