P3110

HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM: P3110-223: HV Main Relay
P3110-223 - HV Main Relay

DESCRIPTION

The power management control ECU (HV CPU) monitors the IGCT relay and detects the following malfunction.





WIRING DIAGRAM





INSPECTION PROCEDURE

HINT
If the battery voltage is applied to terminal +B1 or +B2 of the power management control ECU, even though the power switch is off, the circuit is shorted to +B.

PROCEDURE

1. INSPECT RELAY (IGCT)

(a) Remove the IGCT relay from the engine room relay block and junction block assembly.

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





Standard Resistance:





(c) Install the IGCT relay.

NG -- REPLACE RELAY (IGCT)
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY)

(a) Remove the IGCT relay from the engine room relay block and junction block assembly.

(b) Disconnect connector A21 and A22 from the power management control ECU.

(c) Turn the power switch on (IG).

(d) Measure the voltage according to the value(s) in the table below.





Text in Illustration





Standard Voltage:





NOTICE:
Turning the power switch on (IG) with the connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

(e) Turn the power switch off.

(f) Install the IGCT relay.

(g) Connect the power management control ECU connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE POWER MANAGEMENT CONTROL ECU Components