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

HYBRID / BATTERY CONTROL  HYBRID CONTROL SYSTEM  P0AE411  Hybrid/EV Battery Precharge Contactor Circuit Short to Ground  


DESCRIPTION

The SMRs (System Main Relays) are the relays that connect or disconnect the high-voltage system in accordance with commands from the hybrid vehicle control ECU assembly.

There are 3 SMRs and 1 system main resistor. SMRB, SMRP, SMRG and the system main resistor are located in the HV battery junction block assembly.

To connect to the high voltage power system, the vehicle will first turn on SMRP and SMRB to charge the vehicle through the system main resistor. Then, SMRP will be turned off after SMRG is turned on. To shut off the high voltage power system, SMRB and SMRG are turned off.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate Note
P0AE411 Hybrid/EV Battery Precharge Contactor Circuit Short to Ground Short to ground in the SMRP circuit:
Primary circuit of SMRP is malfunctioning.
(2 trip detection logic)
·

Wire harness or connector

·

HV battery junction block assembly

·

Hybrid vehicle control ECU assembly


Does not come on Master Warning:
Comes on 		SAE Code:
P0AE6

Related Data List
DTC No. Data List
P0AE411
·

VL-Voltage before Boosting

·

VH-Voltage after Boosting

·

Hybrid/EV Battery Voltage

·

SMRP Status

·

SMRB Status

·

SMRG Status

·

SMRP Control Status

·

SMRB Control Status

·

SMRG Control Status

·

Boosting Converter Shutdown Status

·

Generator Inverter Shutdown Status

·

Motor Inverter Shutdown Status



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


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 (READY) and wait for 30 seconds or more.

6.

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

7.

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

8.

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

9.

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 driving pattern again.




CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

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


HINT:

If DTC P0AE411 is output, the power switch cannot be turned on (READY).


PROCEDURE

1.CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - BODY GROUND)
a.

Disconnect the A30 hybrid vehicle control ECU assembly connector.


b.
A556736C36
1.5,0.146 1.938,0.365 0.438,0.219 1.156,1.25 1.417,1.844 true 0.354,0.271 0.667,0.427 0.313,0.156 10 false *a 1.583,0.177 1.958,0.385 0.375,0.208 10 false A30 1.333,1.875 1.833,2.063 0.5,0.188 10 false SMRP
*a Front view of wire harness connector
(to Hybrid Vehicle Control ECU Assembly)


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

Standard Resistance:
Tester Connection Condition Specified Condition
A30-16 (SMRP) - Body ground Power switch off 140 to 290 Ω



c.

Reconnect the A30 hybrid vehicle control ECU assembly connector.


Result:
Proceed to
OK
NG



OK

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY

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


NG

2.CHECK CONNECTOR CONNECTION CONDITION (FLOOR WIRE CONNECTOR)
2.CHECK CONNECTOR CONNECTION CONDITION (FLOOR WIRE CONNECTOR)

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>P0AA000

Result:
Result Proceed to
OK A
NG (The connector is not connected securely.) B
NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C



A

3.CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - HV BATTERY JUNCTION BLOCK ASSEMBLY)

B

CONNECT SECURELY

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - HV BATTERY JUNCTION BLOCK ASSEMBLY)
CAUTION:

Be sure to wear insulated gloves.


a.

Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.



b.

Remove the No. 1 HV battery cover panel RH.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HV BATTERY (for LITHIUM-ION BATTERY [Production date from 2021/08])>REMOVAL


c.
A572944N01
1.156,0.448 1.594,0.698 0.438,0.25 1.219,0.49 1.563,0.688 0.344,0.198 10 true M32

Disconnect the M32 HV battery junction block assembly connector.


d.

Disconnect the A30 hybrid vehicle control ECU assembly connector.


e.
A556751C51
2.604,3.333 3.073,3.604 0.469,0.271 1.406,0.167 1.875,0.438 0.469,0.271 1.104,1.406 1.521,2.031 true 1.542,3.427 1.677,4.063 true 0.281,0.281 0.594,0.438 0.313,0.156 10 false *a 0.333,2.563 0.646,2.719 0.313,0.156 10 false *b 1.531,0.219 1.865,0.396 0.333,0.177 10 false A30 2.677,3.375 3.01,3.552 0.333,0.177 10 false M32 1.385,2.052 2,2.25 0.615,0.198 10 false SMRP 1.458,4.094 2.073,4.292 0.615,0.198 10 false SMRP
*a Front view of wire harness connector
(to Hybrid Vehicle Control ECU Assembly)
*b Front view of wire harness connector
(to HV Battery Junction Block Assembly)


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

Standard Resistance:
Tester Connection Condition Specified Condition
A30-16 (SMRP) or M32-2 (SMRP) - Body ground and other terminals Power switch off 10 kΩ or higher



f.

Reconnect the A30 hybrid vehicle control ECU assembly connector.


g.

Reconnect the M32 HV battery junction block assembly connector.


h.

Install the No. 1 HV battery cover panel RH.


Result:
Proceed to
OK
NG



OK

REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HV RELAY ASSEMBLY (for LITHIUM-ION BATTERY [Production date from 2021/08])>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR