Up to 08/2009

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 blower assembly is controlled by the power management control ECU. Battery blower assembly power is supplied from the FCTL terminal of the power management control ECU by the battery blower relay when it is turned on. The power management control ECU sends command signals (S0, S1 and S2) to each battery blower assembly to get the fan speed corresponding to the HV battery temperature. Information of the voltage applied to each battery blower assembly (VM0, VM1 and VM2) is sent to the power management control ECU as a monitor signal via serial communication by the battery smart unit.









WIRING DIAGRAM





INSPECTION PROCEDURE

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 DTC OUTPUT (DTC P0AFC-123 IS OUTPUT) P0A7F

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

2. CHECK DTC OUTPUT (HV)

(a) Connect the Techstream to the DLC3.

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

(c) Read output DTCs Hybrid Battery System.

Result:





(d) Remove the Techstream from the DLC3.

B -- CHECK FUSE (BATT FAN)
A -- Continue to next step.

3. CHECK BATTERY COOLING BLOWER ASSEMBLY (NO. 0) P0A82

B -- REPLACE BATTERY COOLING BLOWER ASSEMBLY (NO. 0) Components
A -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (BATT FAN RELAY - BATTERY COOLING BLOWER ASSEMBLY (NO. 0))

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) Disconnect the P51 connector from the battery cooling blower assembly (No. 0).





(e) Remove the BATT FAN relay.





Text in Illustration





(f) 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.

(g) Install the BATT FAN relay to the engine room relay block No. 3.

(h) Connect the P51 connector to the battery cooling blower assembly (No. 0).

(i) Install the battery cover Installation.

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

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

5. CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER ASSEMBLY (NO. 0) - BATTERY SMART UNIT)

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) Disconnect the P51 connector from the battery cooling blower assembly (No. 0).





(e) Remove the battery smart unit Removal.

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 (Check for Open):





Standard Resistance (Check for Short):





Text in Illustration





(g) Connect the P51 connector to the battery cooling blower assembly (No. 0).

(h) Install the battery smart unit Installation.

(i) Install the battery cover.

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

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

6. CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER ASSEMBLY (NO. 0) - BODY GROUND)

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) Disconnect the P51 connector from the battery cooling blower assembly (No. 0).





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





Standard Resistance:





Text in Illustration





(f) Connect the P51 connector to the battery cooling blower assembly (No. 0).

(g) Install the battery cover Installation.

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

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

7. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - COOLING BLOWER (NO. 0))

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) Disconnect the P51 connector from the battery cooling blower assembly (No. 0).





(e) Disconnect the A80 connector from 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





(g) Connect the A80 connector to the power management control ECU Installation.

(h) Connect the P51 connector to the battery cooling blower assembly (No. 0).

(i) Install the battery cover Installation.

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

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

8. CHECK POWER MANAGEMENT CONTROL ECU

(a) Using an oscilloscope, measure the waveform according to the condition in the table below.









Standard:

The waveform in the illustration can be measured.

HINT
- A and B in the DUTY waveform shown in the illustration vary depending on the cooling fan mode.
- Duty command value is influenced by variance in fan motors and the change of power supply voltage.
- Measure when the vehicle comes to a stop and an idling stop.

Text in Illustration





(b) Remove the oscilloscope from the power management control ECU.

NG -- REPLACE POWER MANAGEMENT CONTROL ECU Components

OK -- REPLACE BATTERY SMART UNIT Components

9. CHECK FUSE (BATT FAN)

(a) Remove the BATT FAN fuse from the Engine Room Relay Block No. 3.





(b) Measure the resistance of the BATT FAN fuse.

Standard Resistance:





Text in Illustration





(c) Install the BATT FAN fuse.

NG -- CHECK HARNESS AND CONNECTOR (BATT FAN RELAY - BODY GROUND)
OK -- Continue to next step.

10. CHECK RELAY (BATT FAN)

(a) Remove the BATT FAN relay.





Text in Illustration





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





Standard Resistance:





(c) Install the BATT FAN relay.

NG -- REPLACE RELAY (BATT FAN)
OK -- Continue to next step.

11. CHECK HARNESS AND CONNECTOR (BATT FAN RELAY - BATT FAN FUSE)

(a) Remove the BATT FAN relay.

(b) Remove the BATT FAN fuse.

(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) Install the BATT FAN relay and BATT FAN fuse.

NG -- REPLACE ENGINE ROOM RELAY BLOCK NO.3
OK -- Continue to next step.

12. CHECK HARNESS AND CONNECTOR (BATT FAN RELAY - BATTERY COOLING BLOWER ASSEMBLY (NO. 0))

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 BATT FAN relay.





Text in Illustration





(d) Remove the battery cover Removal.

(e) Disconnect the P51 connector from the battery cooling blower assembly (No. 0).





(f) 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.

(g) Connect the P51 connector to the battery cooling blower assembly (No. 0).

(h) Install the battery cover Installation.

(i) Install the BATT FAN relay.

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

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

13. CHECK HARNESS AND CONNECTOR (BATT FAN RELAY - POWER MANAGEMENT CONTROL ECU)

(a) Remove the BATT FAN relay.





Text in Illustration





(b) Disconnect the A80 connector from the power management control ECU Removal.

(c) 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.

(d) Connect the A80 connector to the power management control ECU Installation.

(e) Install the BATT FAN relay.

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

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

(a) Disconnect the A97 connector from the power management control ECU Removal.

(b) 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.

(c) Connect the A97 connector to the power management control ECU Installation.

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

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

(a) Disconnect the A98 connector from the power management control ECU Removal.

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





Standard Resistance:





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

Text in Illustration





(c) Connect the A98 connector to the power management control ECU Installation.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE POWER MANAGEMENT CONTROL ECU Components

16. CHECK HARNESS AND CONNECTOR (BATT FAN RELAY - BODY GROUND)

(a) Remove the BATT FAN relay.





(b) 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.

(c) Install the BATT FAN relay.

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

17. CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER ASSEMBLY - BODY GROUND)

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) Disconnect each of the 3 battery cooling blower assembly connectors.





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





Standard Resistance:





Text in Illustration





(f) Connect each of the 3 battery cooling blower assembly connectors.

(g) Install the battery cover Installation.

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

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

18. CHECK BATTERY COOLING BLOWER ASSEMBLY

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) Disconnect each of the 3 battery cooling blower assembly connectors.





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





Text in Illustration





Standard Resistance:





(f) Connect each of the 3 battery cooling blower assembly connectors.

(g) Install the battery cover Installation.

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

NG -- REPLACE BATTERY COOLING BLOWER ASSEMBLY (MALFUNCTIONING BATTERY COOLING BLOWER ASSEMBLY)

OK -- REPLACE FUSE (BATT FAN)

1. REPLACE BATTERY COOLING BLOWER ASSEMBLY (MALFUNCTIONING BATTERY COOLING BLOWER ASSEMBLY)

HINT
Components

NEXT -- REPLACE FUSE (BATT FAN)

2. REPAIR OR REPLACE HARNESS OR CONNECTOR

NEXT -- REPLACE FUSE (BATT FAN)