HYBRID CONTROL SYSTEM, Diagnostic DTC:P2511-149

DESCRIPTION

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

WIRING DIAGRAM

Refer to the wiring diagram for DTC P3110-223 (Click here).

PROCEDURE

1. Click here

   CHECK AUXILIARY BATTERY TERMINAL

   
   

   1. Confirm whether the auxiliary battery terminals have been disconnected recently.

      Result
      Result Proceed to Terminals have been disconnected. A Terminals have not been disconnected. B

   
   
   • AClick here
   • BClick here
2. Click here

   CONFIRM THAT MASTER WARNING LIGHT

   
   

   1. Turn the power switch on (READY) from off.

   2. Confirm that the master warning light illuminates.

      Result
      Result Proceed to Master warning light illuminates. A Master warning light does not illuminates. B

      Tip:

      DTC P2511-149 may be stored after disconnecting and reconnecting the auxiliary battery terminals. If this happens, the DTC will not be output if the power switch is turned off and then on (READY) again. In this case, clear DTCs to complete the inspection.

   3. Turn the power switch off.

   
   
   • AClick here
   • B

     END

3. Click here

   CLEAR DTC

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

   4. Read and record the DTCs and freeze frame data.

   5. Clear the DTCs and freeze frame data.

   6. Turn the power switch off.

   
   
   • NEXTClick here
4. Click here

   CHECK DTC OUTPUT (HYBRID CONTROL)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

   4. Check for DTCs.

      Result
      Result Proceed to DTC P2511-149 is output again. A DTCs other than P2511-149 are also output. B

   5. Turn the power switch off.

   
   
   • AClick here
   • B

     GO TO DTC CHART (HYBRID CONTROL SYSTEM) (Click here)

5. Click here

   CHECK AUXILIARY BATTERY TERMINAL (CONTACT PROBLEM)

   
   

   1. Check the connection of the auxiliary battery terminal.

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

   
   
   • OKClick here
   • NG

     CONNECT SECURELY

6. Click here

   CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR)

   
   
   1. 

      Check the connector connections and contact pressure of the relevant terminals for the hybrid vehicle control ECU assembly connectors (Click here).

      Table 1. Text in Illustration

      *A	for LHD
      *B	for RHD

      OK
      The connectors are connected securely and there are no contact pressure problems.

   
   
   • OKClick here
   • NG

     CONNECT SECURELY

7. Click here

   CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - IGCT RELAY)

   
   

   1. Remove the IGCT relay from the No. 2 engine room relay block.

   2. 

      Disconnect the A78 and A79 hybrid vehicle control ECU assembly connectors.

      Table 2. Text in Illustration

      *1	No. 2 Engine Room Relay Block	*2	IGCT Relay
      *a	Rear view of wire harness connector (to Hybrid Vehicle Control ECU Assembly)	-	-

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

      Standard Resistance
      Tester Connection Condition Specified Condition A79-4 (+B1) - 5 (IGCT relay) Power switch off Below 1 Ω A78-1 (+B2) - 5 (IGCT relay) Power switch off Below 1 Ω

   4. Install the IGCT relay.

   5. Reconnect the A78 and A79 hybrid vehicle control ECU assembly connectors.

   
   
   • OKClick here
   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

8. Click here

   CHECK FOR INTERMITTENT PROBLEMS

   
   

   1. Check for intermittent problems (Click here).

      
      

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

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

         Result
         Result Proceed to Problem symptom does not recur. A Problem symptom recurs. B

   
   
   • A

     REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY (Click here)

   • B

     REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA