RM36D0EC _51 Engine / Hybrid System _083048 HYBRID / BATTERY CONTROL _0709511 HYBRID CONTROL SYSTEM C

HYBRID / BATTERY CONTROL  HYBRID CONTROL SYSTEM  P06881F  ECM/PCM Power Relay Sense Circuit Intermittent  


DESCRIPTION

This DTC indicates that the hybrid vehicle control ECU assembly detected an instantaneous interruption in +B power source voltage.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate Note
P06881F ECM/PCM Power Relay Sense Circuit Intermittent When the power switch is on (READY), the hybrid vehicle control ECU assembly is reset due to an instantaneous interruption of power source.
(1 trip detection logic)
·

Wire harness or connector

·

Hybrid vehicle control ECU assembly


Comes on Master Warning:
Comes on 		SAE Code:
P2511

CONFIRMATION DRIVING PATTERN

HINT:
·

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>UTILITY

·

When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>DTC CHECK / CLEAR



1.

Connect the GTS to the DLC3.

2.

Turn the power switch on (IG) and turn the GTS on.

3.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4.

Turn the power switch off and wait for 2 minutes or more.

5.

Turn the power switch on (IG) and turn the GTS on.

6.

Turn the power switch on (READY) and wait for 30 seconds or more. [*1]

(If the DTC is not output, drive the vehicle on urban roads according to the freeze frame data item "Vehicle Speed" for approximately 5 minutes.)

HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.


7.

Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.

8.

Check the DTC judgment result.

HINT:
·

If the judgment result shows NORMAL, the system is normal.

·

If the judgment result shows ABNORMAL, the system has a malfunction.

·

If the judgment result shows INCOMPLETE, perform the normal judgment procedure again.




WIRING DIAGRAM

A458542E23
1.073,2.427 2.531,2.875 1.458,0.448 10 false Auxiliary Battery 0.896,1.531 1.813,1.729 0.917,0.198 10 false IGCT 3.198,1.594 4.115,1.792 0.917,0.198 10 false IGCT 2.844,0.656 3.76,0.854 0.917,0.198 10 false 3 2.854,1.094 3.771,1.292 0.917,0.198 10 false 2 3.76,1.104 4.677,1.302 0.917,0.198 10 false 1 3.781,0.646 4.698,0.844 0.917,0.198 10 false 5 4.167,0.625 5.083,0.823 0.917,0.198 10 false 1 4.479,0.615 5.396,0.813 0.917,0.198 10 false 2 4.021,0.927 4.833,1.104 0.813,0.177 10 false IGCT NO. 2 5.833,0.26 6.083,0.427 0.25,0.167 10 false 7 6.063,0.344 6.979,0.542 0.917,0.198 10 false +B1 6.063,0.75 6.979,0.948 0.917,0.198 10 false +B2 5.833,0.677 6.75,0.875 0.917,0.198 10 false 8 5.802,1.104 6.719,1.302 0.917,0.198 10 false 47 5.25,2.323 6.167,2.521 0.917,0.198 10 false A30 6.083,1.094 7,1.292 0.917,0.198 10 false MREL 5.271,2.542 7,3.125 1.729,0.583 10 false Hybrid Vehicle Control ECU Assembly

PROCEDURE

1.CHECK AUXILIARY BATTERY TERMINAL
a.

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




A

2.CONFIRM MASTER WARNING

B

5.CHECK AUXILIARY BATTERY TERMINAL (CONTACT PROBLEM)
2.CONFIRM MASTER WARNING
a.

Turn the power switch on (READY) from off.


b.

Confirm that the master warning illuminates.

Result:
Result Proceed to
Master warning illuminates. A
Master warning does not illuminate. B


NOTICE:

DTC P06881F 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 the DTCs to complete the inspection.



c.

Turn the power switch off.



A

3.CLEAR DTC

B

END

3.CLEAR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the power switch on (IG).


c.

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


d.

Read and record the DTCs and freeze frame data.

Powertrain > Hybrid Control > Trouble Codes
50001 397

e.

Clear the DTCs and freeze frame data.

Powertrain > Hybrid Control > Clear DTCs
50002 397

f.

Turn the power switch off and wait for 2 minutes or more.


Result:
Proceed to
NEXT



NEXT

4.CHECK DTC OUTPUT (HYBRID CONTROL)
4.CHECK DTC OUTPUT (HYBRID CONTROL)
a.

Connect the GTS to the DLC3.


b.

Turn the power switch on (IG).


c.

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


d.

Check for DTCs.

Powertrain > Hybrid Control > Trouble Codes
50001 397
Result:
Result Proceed to
DTC P06881F is output again. A
DTCs other than P06881F are also output. B



e.

Turn the power switch off.



A

5.CHECK AUXILIARY BATTERY TERMINAL (CONTACT PROBLEM)

B

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>DIAGNOSTIC TROUBLE CODE CHART


5.CHECK AUXILIARY 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.



Result:
Proceed to
OK
NG



OK

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

NG

CONNECT SECURELY

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

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>P056014

Result:
Proceed to
OK
NG



OK

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

NG

CONNECT SECURELY

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

Remove the IGCT relay from the No. 3 relay block and junction block assembly.


b.

Disconnect the A30 hybrid vehicle control ECU assembly connectors.


c.

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

A550304C05
5.25,1.115 5.604,1.333 0.354,0.219 5.271,2.208 4.948,2.99 true 5.458,2.219 5.969,2.979 true 0.635,0.333 0.948,0.531 0.313,0.198 10 false *1 2.375,1.906 2.688,2.104 0.313,0.198 10 false *2 3.885,0.26 4.198,0.458 0.313,0.198 10 false *a 5.313,1.135 5.625,1.333 0.313,0.198 10 false A30 5.896,3.042 6.354,3.24 0.458,0.198 10 false +B2 4.781,3.052 5.24,3.25 0.458,0.198 10 false +B1
*1 No. 3 Relay Block and Junction Block Assembly *2 IGCT Relay
*a Front view of wire harness connector
(to Hybrid Vehicle Control ECU Assembly) 		- -


Standard Resistance:
Tester Connection Condition Specified Condition
A30-7 (+B1) - 5 (IGCT relay) Power switch off Below 1 Ω
A30-8 (+B2) - 5 (IGCT relay) Power switch off Below 1 Ω



d.

Reconnect the A30 hybrid vehicle control ECU assembly connectors.


e.

Reinstall the IGCT relay.


Result:
Proceed to
OK
NG



OK

8.CHECK FOR INTERMITTENT PROBLEMS

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CHECK FOR INTERMITTENT PROBLEMS
a.

Check for intermittent problems.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>CHECK FOR INTERMITTENT PROBLEMS

i.

Check the connection and terminal contact pressure of the connectors and wire harnesses between the hybrid vehicle control ECU assembly and the No. 3 relay block and junction block assembly.


ii.

When the power switch is on (READY), jiggle the connectors and wire harnesses between the hybrid vehicle control ECU assembly and the No. 3 relay block and junction block assembly.



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



A

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID VEHICLE CONTROL ECU>REMOVAL


B

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA