P0A1F-123

P310 HYBRID BATTERY CONTROL: HYBRID BATTERY SYSTEM: P0A1F-123: Battery Energy Control Module

DTC P0A1F-123 - Battery Energy Control 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 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 illuminates the MIL and sets a DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





COMPONENT OPERATING RANGE





WIRING DIAGRAM





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

PROCEDURE

1. CHECK AUXILIARY BATTERY
(a) Turn the power switch off.
(b) Measure the voltage between the terminals of the auxiliary battery.
Standard voltage:






NG -- CHARGE OR REPLACE AUXILIARY BATTERY
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (IGCT voltage)
(a) Turn the power switch on (IG).





(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:





HINT:
- For the removal and installation procedures related to the battery pack wire inspection, Components.
- Perform this inspection with the battery pack wire connected.

NG -- CHECK FUSE (IGCT NO. 2)
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (BATTERY PACK WIRE CONNECTOR - BATTERY SMART UNIT)
(a) Remove the battery cover Components.
(b) Turn the power switch off.





(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE BATTERY PACK WIRE
OK -- REPLACE BATTERY SMART UNIT
4. CHECK FUSE (IGCT NO. 2)





(a) Remove the IGCT No. 2 fuse from the engine room No. 2 relay block.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE FUSE (IGCT NO. 2)
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (BATTERY PACK WIRE CONNECTOR - IGCT RELAY)
NOTE: Be sure to wear insulated gloves.
(a) Disconnect the Oz2 battery pack wire connector.
(b) Install the IGCT No. 2 fuse to the engine room No. 2 relay block.





(c) Remove the IGCT relay from the engine room relay block.
(d) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- CHECK AND REPAIR POWER SOURCE CIRCUIT (IGCT RELAY POWER SOURCE)