DESCRIPTION
If the battery voltage sensor detects an internal malfunction, it sends an error signal to the hybrid vehicle control ECU. When the hybrid vehicle control ECU receives the error signal from the battery voltage sensor, the ECU warns the driver and performs fail-safe control.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
---|---|---|---|---|---|
P0AFC00 | Hybrid/EV Battery Sensor Module | The hybrid vehicle control ECU receives an error signal from the battery voltage sensor. (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
P0AFC16 | Hybrid/EV Battery Sensor Module Circuit Voltage Below Threshold | The hybrid vehicle control ECU receives an error signal from the battery voltage sensor. (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
P0AFC96 | Hybrid/EV Battery Sensor Module Component Internal Failure | The hybrid vehicle control ECU receives an error signal from the battery voltage sensor. (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
P308A12 | Hybrid/EV Battery Voltage Sensor All Circuit Short to Auxiliary Battery | The hybrid vehicle control ECU receives an error signal from the battery voltage sensor. (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
DTC No. | Data List |
---|---|
P0AFC00 | Hybrid Battery Sensor Module Power Supply Voltage |
P0AFC16 | |
P0AFC96 | |
P308A12 |
MONITOR DESCRIPTION
If the battery voltage sensor detects an internal malfunction in the unit itself, the hybrid vehicle control ECU will illuminate the MIL and store a DTC.
MONITOR STRATEGY
Related DTCs | P0AFC (INF P0AFC00/P0AFC16/P0AFC96), P308D (INF P308A12): Hybrid Battery Pack Sensor Module |
Required sensors/components | Battery voltage sensor |
Frequency of operation | Continuous |
Duration | TMC's intellectual property |
MIL operation | Immediately |
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 P0AFC (INF P0AFC00/P0AFC16/P0AFC96) is not detected DTC P308D (INF P308A12) is not detected |
CONFIRMATION DRIVING PATTERN
HINT:
Click here
Click here
HINT:
[*1]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
HINT:
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
Click here
HINT:
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
*a | Without waiting for 10 minutes |
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 CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR) |
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) Check the connections of the battery voltage sensor connector. Click here OK: The connector is connected securely and there are no contact problems. | |
(d) Remove the No. 1 HV battery shield panel.
Click here
(e) Check the connections of the battery voltage sensor connector. Click here OK: The connector is connected securely and there are no contact problems. | |
(f) Install the No. 1 HV battery shield panel.
(g) Install the No. 1 hybrid battery exhaust duct.
NG | CONNECT SECURELY |
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2. | CHECK HARNESS AND CONNECTOR (IGCT VOLTAGE) |
CAUTION:
Be sure to wear insulated gloves.
(a) Check that the service plug grip is not installed.
NOTICE:
(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) Measure the voltage according to the value(s) in the table below. Standard Voltage:
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. |
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(f) Turn the power switch off.
(g) Disconnect the cable from the negative (-) auxiliary battery terminal.
(h) Install the No. 1 hybrid battery exhaust duct.
OK | REPLACE BATTERY VOLTAGE SENSOR |
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3. | CHECK HARNESS AND CONNECTOR (BATTERY VOLTAGE SENSOR - BODY GROUND) |
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) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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(d) Install the No. 1 hybrid battery exhaust duct.
OK | REPAIR OR REPLACE HARNESS OR CONNECTOR (IGCT NO. 2 FUSE - BATTERY VOLTAGE SENSOR) |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY VOLTAGE SENSOR - BODY GROUND) |