From 03-2006 to 10-2006

HYBRID BATTERY CONTROL: HYBRID BATTERY SYSTEM: P0A82-123: Hybrid Battery Pack Cooling Fan 1

DTC P0A82-123 - Hybrid Battery Pack Cooling Fan 1

DESCRIPTION
- The speed of the battery cooling blower assembly is controlled by the hybrid vehicle control ECU. Battery cooling blower assembly power is supplied when the FCTL terminal of the hybrid vehicle control ECU turns on the battery blower relay. The hybrid vehicle control ECU sends command signals (SI) to the battery cooling blower assembly to get the fan speed corresponding to the HV battery temperature. Information about the voltage applied to the battery cooling blower assembly (VM) is sent to the hybrid vehicle control ECU as a monitor signal using serial communication via the battery smart unit.









WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTCS (DTC P0A1F-123 IS OUTPUT)
(a) Connect the intelligent tester to the DLC3.
(b) Turn the power switch on (IG).
(c) Select the following menu items: DIAGNOSIS / OBD/MOBD / HV ECU / DTC INFO / CURRENT CODES.
(d) Check if DTCs are output.
Result:
DTC P0A1F-123 is output.
YES -- GO TO INSPECTION PROCEDURE RELEVANT TO OUTPUT DTC
NO -- Continue to next step.
2. CHECK DUCT AND BLOWER
(a) Remove the luggage compartment front trim cover Removal.
(b) Remove the luggage compartment rear trim cover Removal.





(c) Check that the intake ducts and battery cooling blower are not disconnected, damaged, or clogged with foreign objects, and that the acoustical materials have not peeled.
OK:
The ducts and blower are not disconnected, damaged, or clogged with foreign objects and the acoustical materials have not peeled.
NG -- CORRECT THE PROBLEM
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (BATTERY SMART UNIT - HYBRID VEHICLE CONTROL ECU)
(a) Disconnect the battery cooling blower assembly connector.
(b) Disconnect connector A61 from the hybrid vehicle control ECU.





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

Standard resistance (Check for short):





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK HYBRID VEHICLE CONTROL ECU (GROUND SHORT CHECK)
(a) Remove the hybrid vehicle control ECU Removal.





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

Standard resistance (Check for short):





NG -- REPLACE HYBRID VEHICLE CONTROL ECU
OK -- Continue to next step.
5. READ VALUE ON INTELLIGENT TESTER
(a) Connect the battery cooling blower assembly connector.
(b) Connect connector A61 to the hybrid vehicle control ECU.
(c) Connect the intelligent tester to the DLC3.
(d) Turn the power switch on (IG).
(e) Select the following menu items: DIAGNOSIS / OBD/MOBD / HV ECU / ACTIVE TEST / COOLING FAN SPD.

HINT: Check COOLING FAN MODE1 in the DATA LIST using the intelligent tester. If the COOLING FAN MODE1 is 1 to 6, it is not necessary to perform the ACTIVE TEST.

(f) Select the following menu items: USER DATA / VMF FAN VOLT 1.
(g) Select each air volume mode (1 to 6) in the COOLING FAN SPD active test to operate the battery cooling blower assembly.





(h) While the cooling fan is operating, compare the value in the user data (VMF FAN VOLT 1) with the voltage value that was actually measured at the battery cooling blower assembly connector.

Standard:





OK:
Difference of voltage is 1 V or less.
NG -- REPLACE BATTERY SMART UNIT
OK -- REPLACE BATTERY COOLING BLOWER ASSEMBLY