P3110-223

P310 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P3110-139: IGCT Relay Malfunction

DTC P3110-139 - IGCT Relay Malfunction

DTC P3110-223 - IGCT Relay Malfunction

DESCRIPTION

The hybrid vehicle control ECU monitors the IGCT relay and detects the following malfunction.






WIRING DIAGRAM





INSPECTION PROCEDURE
HINT: If auxiliary battery voltage is applied to terminal +B1, +B2, or MREL of the hybrid vehicle control ECU, even though the power switch is off, the circuit is shorted to +B.

PROCEDURE

1. CHECK IGCT RELAY
(a) Remove the IGCT relay from the engine room relay block.





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






NG -- REPLACE IGCT RELAY
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - IGCT RELAY)
(a) Disconnect connector A43 from the hybrid vehicle control ECU.
(b) Turn the power switch on (IG).





(c) Measure the voltage according to the value(s) in the table below.
NOTE: Turning the power switch on (IG) with the hybrid vehicle control ECU connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

Standard voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE HYBRID VEHICLE CONTROL ECU