From 08/2009

HYBRID / BATTERY 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 power management control ECU (HV CPU) monitors the +B power source voltage to detect an instantaneous interruption.





WIRING DIAGRAM





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 (POWER MANAGEMENT CONTROL ECU CONNECTOR) P0340

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

3. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - IGCT MAIN RELAY)

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

(b) Disconnect connector A80 and A81 from power management 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 power management 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 power management control ECU and the engine room relay block No. 2.

(2) When the power switch is on (READY), jiggle the connectors and wire harnesses between the power management control ECU and the engine room relay block No. 2.

Result:





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

A -- REPLACE POWER MANAGEMENT CONTROL ECU Components