P0ABF
P112 HYBRID BATTERY CONTROL: HYBRID BATTERY SYSTEM: P0ABF: Hybrid Battery Pack Current Sensor Circuit
DTC P0ABF - Hybrid Battery Pack Current Sensor Circuit
DTC P0AC0 - Hybrid Battery Pack Current Sensor Circuit Range/Performance
DTC P0AC1 - Hybrid Battery Pack Current Sensor Circuit Low
DTC P0AC2 - Hybrid Battery Pack Current Sensor Circuit High
DESCRIPTION
The battery current sensor, which is mounted on the negative cable side of the HV battery assembly, detects the amperage that flows into the HV battery. The battery current sensor inputs a voltage (which varies between 0 to 5 V in proportion to the amperage) into the IB terminal of the battery ECU. An output voltage of the battery current sensor below 2.5 V indicates that the HV battery assembly is being charged, and above 2.5 V indicates that the HV battery assembly is being discharged.
The battery ECU determines the charging and discharging amperage of the HV battery assembly based on the signals that are input to its IB terminal, and calculates the SOC (state of charge) of the HV battery through the estimation of the amperage.
MONITOR DESCRIPTION
If the battery ECU detects malfunction in the battery current sensor, it will illuminate the MIL and set a DTC.
MONITOR STRATEGY
Case 1: Power source of battery current sensor
Case 2: Battery current sensor malfunction
Case 3: Battery current sensor low voltage
Case 4: Battery current sensor high voltage
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
Case 1: Power source of battery current sensor
Case 2: Battery current sensor malfunction
Case 3: Battery current sensor low voltage
Case 4: Battery current sensor high voltage
COMPONENT OPERATING RANGE
WIRING DIAGRAM
INSPECTION PROCEDURE
CAUTION:
- Before inspecting the high-voltage system, take safety precautions to prevent electrical shocks, such as wearing insulated gloves and removing the service plug grip. After removing the service plug grip, put it in your pocket to prevent other technicians from reconnecting it while you are servicing the high-voltage system.
- After disconnecting the service plug grip, wait for at least 5 minutes before touching any of the high-voltage connectors or terminals.
HINT: At least 5 minutes are required to discharge the high-voltage condenser inside the inverter.
PROCEDURE
1. READ DTC OUTPUT (DTC P0A1F IS OUTPUT)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch ON (IG) and the tester ON.
(c) Enter the following menus: Powertrain / HV Battery / DTC.
(d) Read DTCs.
Result:
DTC P0A1F is output
YES -- REPLACE BATTERY ECU
NO -- Continue to next step.
2. CHECK WIRE HARNESS (BATTERY ECU - BATTERY CURRENT SENSOR)
CAUTION: Wear insulated gloves before performing the following operation.
(a) Turn the power switch OFF.
(b) Remove the service plug grip Removal.
NOTE: Turning the power switch ON (READY) with the service plug grip removed could cause a malfunction. Therefore, never turn the power switch ON (READY) in this state.
(c) Disconnect the B13 battery ECU connector.
(d) Disconnect the battery current sensor connector.
(e) Turn the power switch ON (IG).
HINT: DTCs for the interlock switch system are output when turning the power switch ON (IG) with the service plug grip removed.
(f) Measure the voltage of the battery ECU connector.
Standard voltage:
(g) Turn the power switch OFF.
(h) Measure the resistance of the wire harness side connectors.
Standard resistance:
(i) Reconnect the battery current sensor connector.
(j) Reconnect the battery ECU connector.
(k) Reinstall the service plug grip Removal.
HINT: Since the wire harness is not available by itself, if replacement is required, replace the entire HV battery assembly.
NG -- REPAIR HARNESS AND CONNECTOR, OR REPLACE HV SUPPLY BATTERY ASSEMBLY
OK -- Continue to next step.
3. REPLACE BATTERY CURRENT SENSOR
(a) Replace the battery current sensor Removal.
(b) Connect the Techstream to the DLC3.
(c) Turn the power switch ON (IG) and the tester ON.
(d) Enter the following menus: Powertrain / HV Battery / DTC.
(e) Clear the DTCs and freeze frame data.
(f) Perform a simulation test.
HINT: Some of the steps involve the detection of 2 trips. Therefore, after performing a simulation test, turn the power switch OFF, and perform the simulation test again.
NEXT -- Continue to next step.
4. READ DTC OUTPUT (DTC P0ABF, P0AC0, P0AC1 AND P0AC2 IS NOT OUTPUT)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch ON (IG) and the tester ON.
(c) Enter the following menus: Powertrain / HV Battery / DTC.
(d) Read DTCs.
Result:
DTC P0ABF, P0AC0, P0AC1 and P0AC2 is not output again
NO -- REPLACE BATTERY ECU
YES -- SYSTEM IS OK