P0AFC-123

P313 HYBRID BATTERY CONTROL: HYBRID BATTERY SYSTEM: P0AFC-123: Hybrid Battery Pack Sensor Module
P0AFC-123 - Hybrid Battery Pack Sensor Module

DESCRIPTION

- If the battery smart unit 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 smart unit, the hybrid vehicle control ECU warns the driver and performs fail-safe control.





MONITOR DESCRIPTION

If the battery smart unit detects an internal malfunction in the unit itself, the hybrid vehicle control ECU will illuminate the MIL and set a DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





COMPONENT OPERATING RANGE





CONFIRMATION DRIVING PATTERN

1. Connect the Techstream to the DLC3.

2. Turn the ignition switch to ON and turn the Techstream on.

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

4. Turn the ignition switch off.

5. Turn the ignition switch to ON (READY) and turn the Techstream on.

6. Perform the universal trip.

7. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

8. Check that permanent DTCs are cleared.

HINT
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.

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 accidentally reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals.
HINT
- At least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
- After repairing, restart the system (turn the ignition switch ON [READY]) and recheck for DTCs Hybrid Battery System.

PROCEDURE

1. INSPECT FUSE (IGCT NO. 3)

(a) Remove the IGCT NO. 3 fuse.





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

Standard Resistance:





Text in Illustration





NG -- REPLACE FUSE (IGCT NO. 3)
OK -- Continue to next step.

2. INSPECT RELAY (IGCT MAIN)

(a) Remove the IGCT MAIN relay.





Text in Illustration





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





Standard Resistance:





NG -- REPLACE RELAY (IGCT MAIN)
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (IGCT VOLTAGE)

CAUTION:
Be sure to wear insulated gloves and protective goggles.

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

(b) Check that the service plug grip is not installed.

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

(c) Remove the battery cover Removal.

(d) Remove the battery smart unit Removal.

HINT
Do not disconnect the battery smart unit connector.

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

(f) Turn the ignition switch to ON.

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





NOTICE:
If the ignition switch is turned ON with the service plug grip removed, DTC P0A0D-350 for the interlock switch system will be stored. If this DTC is output, clear the DTC using the Techstream Hybrid Battery System.

Standard Voltage:





Text in Illustration





NG -- CHECK HARNESS AND CONNECTOR (BATTERY SMART UNIT - IGCT MAIN RELAY AND BODY GROUND)

OK -- REPLACE BATTERY SMART UNIT Removal

4. CHECK HARNESS AND CONNECTOR (BATTERY SMART UNIT - IGCT MAIN RELAY AND BODY GROUND)

CAUTION:
Be sure to wear insulated gloves and protective goggles.

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

(b) Remove the IGCT MAIN relay.





Text in Illustration





(c) Check that the service plug grip is not installed.

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

(d) Remove the battery cover Removal.

(e) Disconnect the z21 connector from the battery smart unit.

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





Standard Resistance:





Text in Illustration





NG -- CHECK HARNESS AND CONNECTOR (NO. 2 BATTERY PACK WIRE)

OK -- CHECK AND REPAIR POWER SOURCE CIRCUIT

5. CHECK HARNESS AND CONNECTOR (NO. 2 BATTERY PACK WIRE)

CAUTION:
Be sure to wear insulated gloves and protective goggles.

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

(b) Check that the service plug grip is not installed.

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

(c) Remove the battery cover Removal.

(d) Disconnect the Oz3 connector from the No. 2 battery pack wire.





(e) Disconnect the z21 connector from the battery smart unit.

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





Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 2 BATTERY PACK WIRE)

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR