P2511

P313 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P2511-149: ECM/PCM Power Relay Sense Circuit Intermittent
P2511-149 - ECM/PCM Power Relay Sense Circuit Intermittent

DESCRIPTION

This DTC indicates that the hybrid vehicle control ECU monitors the +B power source voltage to detect an instantaneous interruption.





WIRING DIAGRAM

Refer to the wiring diagram for DTC P3110-223 P3110.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK BATTERY TERMINAL (CONTACT PROBLEM)

(a) Check the connection of the auxiliary battery terminal.

OK:

The terminal is connected securely and there is no contact problem.

NG -- CONNECT SECURELY
OK -- Continue to next step.

2. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR) P0340-886

NG -- CONNECT SECURELY
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - IGCT MAIN RELAY)

(a) Remove the IGCT MAIN relay from the engine room relay block No. 2.

(b) Disconnect connectors A65 and A66 from the hybrid vehicle control ECU.





Text in Illustration





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

Standard Resistance:





(d) Install the IGCT MAIN relay.

(e) Connect the hybrid vehicle control ECU connector.

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

4. CHECK FOR INTERMITTENT PROBLEMS

(a) Check for intermittent problems Check For Intermittent Problems.

(1) Check the connection and terminal contact pressure of connectors and wire harnesses between the hybrid vehicle control ECU and the engine room relay block No. 2.

(2) When the ignition switch is ON (READY), jiggle the connectors and wire harnesses between the hybrid vehicle control ECU and the engine room relay block No. 2.

Result:





B -- REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

A -- REPLACE HYBRID VEHICLE CONTROL ECU Removal