Up to 08/2009

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 power management control ECU. When the power management control ECU receives the error signal from the battery smart unit, the 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 power management control ECU (HV CPU) will illuminate the MIL and set a DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





COMPONENT OPERATING RANGE





CONFIRMATION DRIVING PATTERN

- 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.

- Turn the power switch on (READY) and turn the Techstream on.

- Perform the universal trip.

- Enter the following menus: Powertrain / HV / Trouble Codes.

- 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.

NOTICE:
After the power switch is turned off, the display and navigation module display (HDD navigation system) records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 60 seconds before disconnecting the cable from the negative (-) battery terminal.

HINT
After repairing, restart the system (turn the power switch on (READY)) and recheck for DTCs Hybrid Battery System.

PROCEDURE

1. CHECK FUSE (IGCT NO. 3)

(a) Remove the IGCT No. 3 fuse from the engine room relay block No. 2.





Text in Illustration





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

Standard Resistance:





(c) Install the IGCT No. 3 fuse to the engine room relay block No. 2.

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

2. CHECK RELAY (IGCT MAIN)

(a) Remove the IGCT MAIN relay from the engine room relay block No. 2.





Text in Illustration





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





Standard Resistance:





(c) Install the IGCT MAIN relay to the engine room relay block No. 2.

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 power 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.

HINT
Do not disconnect the battery smart unit connector.

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

(f) Turn the power switch on (IG).

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





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.

HINT
Turning the power switch on (IG) with the service plug grip removed causes an interlock switch system DTC (P0A0D-350) to be set. Use the Techstream to clear the DTCs Hybrid Battery System.

Standard Voltage:





Text in Illustration





(h) Install the battery smart unit Installation.

(i) Install the battery cover.

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

OK -- REPLACE BATTERY SMART UNIT Components

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

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 from the engine room relay block No. 2.





Text in Illustration





(c) 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.

(d) Remove the battery cover Removal.

(e) Remove the battery smart unit.

HINT
Disconnect only the z30 connector of the battery smart unit.

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





Standard Resistance:





Text in Illustration





(g) Install the battery smart unit Installation.

(h) Install the battery cover.

(i) Install the IGCT MAIN relay to the Engine Room Relay Block No. 2.

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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- CHECK AND REPAIR POWER SOURCE CIRCUIT