DESCRIPTION Refer to the description for DTC P0ABF11.
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DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Warning Indicate |
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) |
- Battery voltage sensor
- HV battery junction block assembly
- Hybrid battery thermistor
| Comes on |
Master Warning Light: Comes on | Related Data List
DTC No. | Data List |
P0ABF28 |
- Hybrid Battery Current for Hybrid Battery Control*1
- Hybrid Battery Current
| HINT: *1:
The value of "Hybrid Battery Current for Hybrid Battery Control"
usually changes by 4 A or more while the vehicle is accelerating and
decelerating. MONITOR DESCRIPTION If
the battery voltage sensor detects a malfunction in the battery current
sensor, the hybrid vehicle control ECU 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 voltage sensor | 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.
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- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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- Connect the Techstream to the DLC3.
- Turn the power switch on (IG) and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for 2 minutes or more.
- Drive the vehicle on urban roads for approximately 10 minutes.[*1]
- Turn the power switch off and wait for 2 minutes or more.[*2]
- Turn the power switch on (IG) and turn the Techstream on.[*3]
- With power switch on (IG) 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.
- Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
- 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 or N/A, perform the normal judgment procedure again.
WIRING DIAGRAM Refer to the wiring diagram for DTC P0ABF11.
Click here CAUTION / NOTICE / HINT
CAUTION:
NOTICE: After
turning the power switch off, waiting time may be required before
disconnecting the cable from the negative (-) auxiliary battery
terminal. Therefore, make sure to read the disconnecting the cable from
the negative (-) auxiliary battery terminal notices before proceeding
with work. Click here PROCEDURE
1. |
CHECK DTC OUTPUT (HYBRID CONTROL) | (a) Connect the Techstream 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
Result | Proceed to |
P0AFC00, P0AFC96 or P0A9563 is not output. |
A | P0AFC00, P0AFC96 or P0A9563 is output. |
B | (e) Turn the power switch off.
B |
| GO TO DTC CHART (HYBRID CONTROL SYSTEM) |
A |
| |
2. |
CHECK HARNESS AND CONNECTOR (BATTERY VOLTAGE SENSOR - HV BATTERY JUNCTION BLOCK ASSEMBLY) |
Click here
NG |
| REPLACE HYBRID BATTERY THERMISTOR |
OK |
| |
3. |
CHECK HV BATTERY JUNCTION BLOCK ASSEMBLY (BATTERY CURRENT SENSOR (IB)) |
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 hybrid battery exhaust duct. Click here
(c) Connect the cable to the negative (-) auxiliary battery terminal.
(d) Turn the power switch on (IG).
(e) 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 |
y6-6 (VIB) - y6-12 (GIB) |
Power switch on (IG) |
NOTICE:
- Turning the power switch on (IG) 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.
|
|
*a | Component with harness connected (Battery Voltage Sensor) | | |
(f) 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 |
y6-5 (IB0) - y6-12 (GIB) |
Power switch on (IG) | NOTICE:
Be sure to set the toyota electrical tester to 4 V when performing this test. |
|
*a | Component with harness connected (Battery Voltage Sensor) | | |
(g) Compare the measured values of the IB0 terminal voltage and VIB terminal voltage using the following formula:
IB0 voltage - VIB Voltage / 2 = less than 0.081 V |
IB0 voltage - VIB Voltage / 2 = -0.081 V or higher |
Result | Proceed to |
Within the specified range above |
A | Other than above |
B | (h) Turn the power switch off.
(i) Disconnect the cable from the negative (-) auxiliary battery terminal.
(j) Install the No. 1 hybrid battery exhaust duct. HINT: When
the power switch is on (IG) the actual current will be approximately 0
A. The following graph shows the relation of the actual output voltage
of the battery current sensor terminal IB0 and actual current used for
DTC judgment.
B |
| REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY |
A |
| |
4. |
REPLACE BATTERY VOLTAGE SENSOR | Click here
NEXT |
| |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG). (c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(d) Clear the DTCs and freeze frame data. Powertrain > Hybrid Control > Clear DTCs
(e) Drive the vehicle on urban roads for approximately 10 minutes. (f) Turn the power switch off and wait for 2 minutes or more.
(g) Turn the power switch on (IG) and wait for 10 seconds or more.
NEXT |
| |
6. |
RECONFIRM DTC OUTPUT (HYBRID CONTROL) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(d) Read output DTCs. Powertrain > Hybrid Control > Trouble Codes
(e) Turn the power switch off.
Result | Proceed to |
P0ABF28 is not output. |
A | P0ABF28 is output. |
B |
A |
| END |
B |
| REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY | |