P0A84

HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM: P0A84-123: Hybrid Battery Pack Cooling Fan 1
P0A84-123 - Hybrid Battery Pack Cooling Fan 1

DESCRIPTION

- The speed of the battery cooling blower assembly is controlled by the power management control ECU. Battery cooling blower assembly power is supplied when the FCTL terminal of the power management control ECU turns on the battery blower relay. The power management 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 power management control ECU as a monitor signal using serial communication via the battery smart unit.









WIRING DIAGRAM





INSPECTION PROCEDURE

CAUTION:
- Before inspecting the high-voltage system, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. 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
Waiting for 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.

PROCEDURE

1. CHECK FOR DTCS (DTC P0AFC-123 IS OUTPUT) P0A7A

B -- GO TO DTC CHART
A -- Continue to next step.

2. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Remove the rear side seatback assembly RH Removal.

(b) Connect the Techstream to the DLC3.

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

(d) Enter the following menus: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.

HINT
Check Cooling Fan Mode1 in the Data List. If the mode is 6, it is not necessary to perform the Active Test.

(e) Select air volume mode 6 in the "Driving the Battery Cooling Fan" active test to operate the battery cooling blower assembly.

(f) Check that the fan operates and air is sucked into the inlet duct.

HINT
The cooling fan may not stop even when turning the cooling fan off in the "Driving the Battery Cooling Fan" active test. This is due to HV system control and not a malfunction.

OK:

The fan operates.

(g) Install the rear side seatback assembly RH Installation.

NG -- CHECK INTEGRATION NO.2 RELAY (BATT FAN)
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER - BATTERY SMART UNIT)

CAUTION:
Be sure to wear insulated gloves.

(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 No. 1 hybrid vehicle battery carrier bracket sub-assembly Removal.

(d) Disconnect the S14 connector of the battery cooling blower assembly.





(e) Disconnect the c1 connector of the battery smart unit.





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





Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





Text in Illustration





(g) Connect the S14 connector of the battery cooling blower assembly.

(h) Connect the c1 connector of the battery smart unit.

(i) Remove the No. 1 hybrid vehicle battery carrier bracket sub-assembly Installation.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. CHECK BATTERY COOLING BLOWER ASSEMBLY (VOLTAGE) P0A82

NG -- REPLACE BATTERY SMART UNIT Components

OK -- REPLACE BATTERY COOLING BLOWER ASSEMBLY Components

5. CHECK INTEGRATION NO.2 RELAY (BATT FAN)

(a) Remove the integration relay from the engine room junction block assembly Removal.

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





Standard Resistance:





Text in Illustration





(c) Install the integration relay Installation.

NG -- REPLACE INTEGRATION NO.2 RELAY
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (VOLTAGE)

(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 No. 1 hybrid vehicle battery carrier bracket sub-assembly Removal.

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

(e) Connect the Techstream to the DLC3.

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

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.
- If the power switch is turned on (IG) 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.

(g) Enter the following menus: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.

HINT
Check "Cooling Fan Mode 1" in the data list using the Techstream. If the "Cooling Fan Mode 1" is 1 to 6, it is not necessary to perform the Active Test.

(h) Enter the following menus: All Data / VMF Fan Motor Voltage 1.

(i) Select each air volume mode (1 to 6) in the "Driving the Battery Cooling Fan" active test to operate the battery cooling blower assembly.

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





Standard Voltage:





Text in Illustration





HINT
Measure the voltage on the wire side of the connector that is part of the battery cooling blower.

(k) Turn the power switch off.

(l) Install the No. 1 hybrid vehicle battery carrier bracket sub-assembly Installation.

NG -- CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - POWER MANAGEMENT CONTROL ECU)
OK -- Continue to next step.

7. CHECK BATTERY COOLING BLOWER ASSEMBLY

(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 No. 1 hybrid vehicle battery carrier bracket sub-assembly Removal.

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

(e) Connect the Techstream to the DLC3.

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

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.
- If the power switch is turned on (IG) 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.

(g) Enter the following menus: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.

(h) Select air volume mode 0 in the "Driving the Battery Cooling Fan" active test to operate the battery cooling blower assembly.

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





Standard Voltage:





Text in Illustration





HINT
Measure the voltage on the wire side of the connector that is part of the battery cooling blower.

(j) Turn the power switch off.

(k) Install the No. 1 hybrid vehicle battery carrier bracket sub-assembly Installation.

NG -- REPLACE BATTERY COOLING BLOWER ASSEMBLY Components
OK -- Continue to next step.

8. CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER - POWER MANAGEMENT CONTROL ECU)

(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 No. 1 hybrid vehicle battery carrier bracket sub-assembly Removal.

(d) Remove the S14 connector of the battery cooling blower assembly.





(e) Disconnect the A21 connector of the power management control ECU Removal.

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





Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





Text in Illustration





NOTICE:
When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder.

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

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

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.
- If the power switch is turned on (IG) 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.

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

Standard Voltage:





(j) Turn the power switch off.

(k) Connect the S14 connector of the battery cooling blower assembly.

(l) Install the No. 1 hybrid vehicle battery carrier bracket sub-assembly Installation.

(m) Connect the A21 connector of the power management control ECU Installation.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE POWER MANAGEMENT CONTROL ECU Components

9. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - POWER MANAGEMENT CONTROL ECU)

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

(b) Disconnect the A21 connector of the power management control ECU Removal.

(c) Remove the integration relay Removal.

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





Standard Resistance:





Text in Illustration





NOTICE:
When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder.

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

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

Standard Voltage:





NOTICE:
If the power switch is turned on (IG) with the connector removed, DTC will be stored. If the DTC is output, clear the DTC using the Techstream Hybrid Battery System.

(g) Connect the A21 connector of the power management control ECU Installation.

(h) Install the integration relay Installation.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

10. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)

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

(b) Disconnect the L5 connector of the power management control ECU Removal.

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





Standard Resistance:





Text in Illustration





NOTICE:
When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder.

(d) Connect the L5 connector of the power management control ECU Installation.

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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

11. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)

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

(b) Disconnect the L6 connector of the power management control ECU Removal.

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





Standard Resistance:





Text in Illustration





NOTICE:
When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder.

(d) Connect the L6 connector of the power management control ECU Installation.

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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

12. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BATTERY COOLING BLOWER ASSEMBLY)

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

(b) Remove the integration relay Removal.

(c) Remove the No. 1 hybrid vehicle battery carrier bracket sub-assembly Removal.

(d) Disconnect the S14 connector of the battery cooling blower assembly.





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





Standard Resistance:





Text in Illustration





(f) Install the integration relay Installation.

(g) Connect the S14 connector of the battery cooling blower assembly.

(h) Install the No. 1 hybrid vehicle battery carrier bracket sub-assembly Installation.

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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE POWER MANAGEMENT CONTROL ECU Components

13. REPLACE INTEGRATION NO.2 RELAY

(a) Replace the integration relay Components.

NEXT -- Continue to next step.

14. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BATTERY COOLING BLOWER ASSEMBLY)

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

(b) Remove the integration relay Removal.

(c) Remove the No. 1 hybrid vehicle battery carrier bracket sub-assembly Removal.

(d) Disconnect the S14 connector of the battery cooling blower assembly.





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





Standard Resistance:





Text in Illustration





(f) Install the integration relay Installation.

(g) Connect the S14 connector of the battery cooling blower assembly.

(h) Install the No. 1 hybrid vehicle battery carrier bracket sub-assembly Installation.

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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

15. CHECK BATTERY COOLING BLOWER ASSEMBLY

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

(b) Remove the No. 1 hybrid vehicle battery carrier bracket sub-assembly Removal.

(c) Disconnect the S14 connector of the battery cooling blower assembly.





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





Standard Resistance:





Text in Illustration





(e) Connect the S14 connector of the battery cooling blower assembly.

(f) Install the No. 1 hybrid vehicle battery carrier bracket sub-assembly Installation.

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

NG -- REPLACE BATTERY COOLING BLOWER ASSEMBLY Components

OK -- RECOVERY TO NORMAL