RM38T0EC _51 Engine / Hybrid System _144957 HYBRID / BATTERY CONTROL _0604234 HYBRID BATTERY SYSTEM C

HYBRID / BATTERY CONTROL  HYBRID BATTERY SYSTEM  P0ABF28  Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure  


DESCRIPTION

Refer to the description for DTC P0ABF11.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID BATTERY SYSTEM>P0ABF11

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate Note
P0ABF28 Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure The offset value of the battery current sensor is excessively large.
(1 trip detection logic)
·

HV battery junction block assembly

·

Battery ECU assembly

·

Wire harness or connector


Comes on Master Warning:
Comes on 		SAE Code: P0AC0

HINT:
·

Make sure to perform Current Sensor Offset Learning after replacing a battery current sensor.

·

This DTC may be output if Current Sensor Offset Learning has not been completed.



MONITOR DESCRIPTION

If the battery ECU assembly detects a malfunction in a battery current sensor, the battery ECU assembly will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs P0AC0 (INF P0ABF28): Current sensor malfunction
Required sensors/components Battery current sensor
Frequency of operation Continuous
Duration TMC's intellectual property
MIL operation 1 driving cycle
Sequence of operation None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored TMC's intellectual property
Other conditions belong to TMC's intellectual property -

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property -

COMPONENT OPERATING RANGE

Battery ECU assembly DTC P0AC0 (INF P0ABF28) is not detected

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 BATTERY SYSTEM>UTILITY

·

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

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



1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON and turn the GTS on.

3.

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

4.

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

5.

Turn the ignition switch to ON and turn the GTS on.

6.

Drive the vehicle on urban roads for approximately 10 minutes.[*1]

7.

Turn the ignition switch off and wait for 2 minutes or more.[*2]

8.

Turn the ignition switch to ON and turn the GTS on.[*3]

9.

With ignition switch ON and wait for 10 seconds or more.[*4]

HINT:

[*1] to [*4]: Normal judgment procedure.

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


10.

Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.

11.

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.




CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

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


NOTICE:
·

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY

·

When disconnecting and reconnecting the auxiliary battery

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART




PROCEDURE

1.CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)
a.

Check for DTCs.

Powertrain > HV Battery > Trouble Codes
50001 398
Powertrain > Hybrid Control > Trouble Codes
50001 397
Result:
Result Proceed to
"P0ABF28" only is output, or DTCs except the ones in the table below are also output. A
DTCs of hybrid battery system in the table below are output. B
DTCs of hybrid control system in the table below are output. C


System Relevant DTC
Hybrid battery system P060A47 Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
P060B49 Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
P060687 Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
P062F46 Hybrid/EV Battery Energy Control Module EEPROM Calibration / Parameter Memory Failure
Hybrid control system P0A1F94 Hybrid/EV Battery Energy Control Module Unexpected Operation


b.

Turn the ignition switch off.



A

2.CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - HV BATTERY JUNCTION BLOCK ASSEMBLY)

B

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

C

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

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


2.CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - HV BATTERY JUNCTION BLOCK ASSEMBLY)
CAUTION:

Be sure to wear insulated gloves and protective goggles.


a.

Check that the service plug grip is not installed.

NOTICE:

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



b.
A517709N09
1.083,0.25 1.583,0.5 0.5,0.25 1.135,0.271 1.521,0.479 0.385,0.208 10 true O217

Disconnect the battery ECU assembly connector.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.



c.
A517682N05
0.083,0.5 0.583,0.75 0.5,0.25 0.135,0.531 0.521,0.74 0.385,0.208 10 true O222

Disconnect the battery current sensor connector from the HV battery junction block assembly.

NOTICE:

Before disconnecting the connector, check that it is not loose or disconnected.



d.

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

Standard Resistance (Check for Open):
Tester Connection Condition Specified Condition
O217-6 (IB1) - O222-2 (IB1) Ignition switch off Below 1 Ω
O217-18 (GIB) - O222-3 (GIB) Ignition switch off Below 1 Ω
O217-5 (IB0) - O222-4 (IB0) Ignition switch off Below 1 Ω
O217-17 (VIB) - O222-1 (VIB) Ignition switch off Below 1 Ω


Standard Resistance (Check for Short):
Tester Connection Condition Specified Condition
O217-6 (IB1) or O222-2 (IB1) - Body ground and other terminals Ignition switch off 10 kΩ or higher
O217-18 (GIB) or O222-3 (GIB) - Body ground and other terminals Ignition switch off 10 kΩ or higher
O217-5 (IB0) or O222-4 (IB0) - Body ground and other terminals Ignition switch off 10 kΩ or higher
O217-17 (VIB) or O222-1 (VIB) - Body ground and other terminals Ignition switch off 10 kΩ or higher



e.

Reconnect the battery current sensor connector to the HV battery junction block assembly.


f.

Reconnect the battery ECU assembly connector.


Result:
Proceed to
OK
NG



OK

3.CHECK HV BATTERY JUNCTION BLOCK ASSEMBLY (BATTERY CURRENT SENSOR (IB0))

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK HV BATTERY JUNCTION BLOCK ASSEMBLY (BATTERY CURRENT SENSOR (IB0))
CAUTION:

Be sure to wear insulated gloves and protective goggles.


a.

Check that the service plug grip is not installed.

NOTICE:

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



b.

Connect the cable to the negative (-) auxiliary battery terminal.


c.

Turn the ignition switch to ON.


d.
A517680C10
0.583,3 1.083,3.25 0.5,0.25 1.854,3.406 2.521,3.073 true 1.865,3.708 2.531,4.042 true 0.167,2.25 0.333,2.417 0.167,0.167 10 true *a 0.667,3.031 1.073,3.229 0.406,0.198 10 false O222 2.594,2.969 3.115,3.417 0.521,0.448 10 false VIB 2.604,3.948 3.021,4.271 0.417,0.323 10 false GIB
*a Component with harness connected
(HV Battery Junction Block Assembly (Battery Current Sensor))


Using a toyota electrical tester set to 40 V, measure the VIB voltage according to the value(s) in the table below.

Tester Connection Tester Connection
O222-1 (VIB) - O222-3 (GIB) Ignition switch ON

NOTICE:
·

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

·

Be sure to set the toyota electrical tester to 40 V when performing this test.




e.
A517680C11
0.583,2.969 1.083,3.219 0.5,0.25 1.229,4.292 1.563,3.708 true 1.865,3.708 2.198,4.292 true 0.167,2.25 0.479,2.406 0.313,0.156 10 false *a 0.677,3 1.75,3.198 1.073,0.198 10 false O222 1.125,4.313 1.625,4.51 0.5,0.198 10 false IB0 2.146,4.313 2.646,4.51 0.5,0.198 10 false GIB
*a Component with harness connected
(HV Battery Junction Block Assembly (Battery Current Sensor))


Using a toyota electrical tester set to 4 V, measure the IB0 voltage according to the value(s) in the table below.

Tester Connection Tester Connection
O222-4 (IB0) - O222-3 (GIB) Ignition switch ON

NOTICE:

Be sure to set the toyota electrical tester to 4 V when performing this test.



f.

Compare the measured values of the IB0 terminal voltage and VIB terminal voltage using the following formula:

IB0 voltage - 0.584 X VIB Voltage = less than 0.060 V
IB0 voltage - 0.584 X VIB Voltage = -0.060 V or higher


Result:
Result Proceed to
Within the specified range above A
Other than above B


g.

Turn the ignition switch off.


h.

Disconnect the cable from the negative (-) auxiliary battery terminal.



A

4.CHECK HV BATTERY JUNCTION BLOCK ASSEMBLY (BATTERY CURRENT SENSOR (IB1))

B

REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HV RELAY ASSEMBLY>REMOVAL


4.CHECK HV BATTERY JUNCTION BLOCK ASSEMBLY (BATTERY CURRENT SENSOR (IB1))
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 ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.



b.

Connect the cable to the negative (-) auxiliary battery terminal.


c.

Turn the ignition switch to ON.


d.
A517680C10
0.583,3 1.083,3.25 0.5,0.25 1.854,3.406 2.521,3.073 true 1.865,3.708 2.531,4.042 true 0.167,2.25 0.333,2.417 0.167,0.167 10 true *a 0.667,3.031 1.073,3.229 0.406,0.198 10 false O222 2.594,2.969 3.115,3.417 0.521,0.448 10 false VIB 2.604,3.948 3.021,4.271 0.417,0.323 10 false GIB
*a Component with harness connected
(HV Battery Junction Block Assembly (Battery Current Sensor))


Using a toyota electrical tester set to 40 V, measure the VIB voltage according to the value(s) in the table below.

Tester Connection Tester Connection
O222-1 (VIB) - O222-3 (GIB) Ignition switch ON

NOTICE:
·

Turning the ignition switch to ON with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.

·

Be sure to set the toyota electrical tester to 40 V when performing this test.




e.
A517680C12
0.583,2.969 1.083,3.219 0.5,0.25 1.542,3.49 1.083,4.25 true 1.865,3.719 2.333,4.25 true 0.167,2.271 0.448,2.5 0.281,0.229 10 false *a 0.677,2.99 1.104,3.271 0.427,0.281 10 false O222 1,4.271 1.271,4.458 0.271,0.188 10 false IB1 2.25,4.271 2.594,4.448 0.344,0.177 10 false GIB
*a Component with harness connected
(HV Battery Junction Block Assembly (Battery Current Sensor))


Using a toyota electrical tester set to 4 V, measure the IB1 voltage according to the value(s) in the table below.

Tester Connection Tester Connection
O222-2 (IB1) - O222-3 (GIB) Ignition switch ON

NOTICE:

Be sure to set the toyota electrical tester to 4 V when performing this test.



f.

Compare the measured values of the IB1 terminal voltage and VIB terminal voltage using the following formula:

Condition
IB1 voltage - 0.416 X VIB Voltage = less than 0.060 V
IB1 voltage - 0.416 X VIB Voltage = -0.060 V or higher


Result:
Result Proceed to
Within the specified range above. A
Other than above B


g.

Turn the ignition switch off.


h.

Disconnect the cable from the negative (-) auxiliary battery terminal.



A

5.REPLACE BATTERY ECU ASSEMBLY

B

REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HV RELAY ASSEMBLY>REMOVAL


5.REPLACE BATTERY ECU ASSEMBLY

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

Result:
Proceed to
NEXT



NEXT

6.SIMULATION TEST
6.SIMULATION TEST
a.

Clear the DTCs and freeze frame data.

Powertrain > HV Battery > Clear DTCs
50002 398

b.

Drive the vehicle on urban roads for approximately 10 minutes.


c.

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


d.

Turn the ignition switch to ON and wait for 10 seconds or more.


Result:
Proceed to
NEXT



NEXT

7.CHECK DTC OUTPUT (HV BATTERY)
7.CHECK DTC OUTPUT (HV BATTERY)
a.

Check for DTCs.

Powertrain > HV Battery > Trouble Codes
50001 398
Result:
Result Proceed to
DTCs are not output. A
P0ABF28 is also output. B



b.

Turn the ignition switch off.



A

END

B

REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HV RELAY ASSEMBLY>REMOVAL