P0A85

HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM: P0A85-123: Hybrid Battery Pack Cooling Fan 1 Control Circuit High
P0A85-123 - Hybrid Battery Pack Cooling Fan 1 Control Circuit High

DESCRIPTION

- Refer to the description for DTC P0A84-123 P0A84.





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.

PROCEDURE

1. CHECK DTC OUTPUT (DTC P0AFC-123 IS OUTPUT) P0A7F

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

2. CHECK HARNESS AND CONNECTOR (VM0 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) Connect the Techstream to the DLC3.

(g) Turn the power switch on (IG) and the Techstream on.

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

(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 while the cooling fan is operating.





Standard Voltage:





Text in Illustration





NOTICE:
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.

HINT
Compare the values in each air volume mode (1 to 6).

(k) Install the battery smart unit Installation.

(l) Install the battery cover.

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

NG -- CHECK BATTERY COOLING BLOWER ASSEMBLY (NO. 0)
OK -- Continue to next step.

3. CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR)

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
Disconnect the z29 and z30 connectors from the battery smart unit.

(e) Measure the resistance according to the conditions and value(s) in the tables below.









Standard Resistance:





Text in Illustration





(f) Measure the resistance according to the conditions and value(s) in the tables below.





Standard Resistance:





Text in Illustration





(g) Install the battery smart unit Installation.

(h) Install the battery cover.

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

NG -- CHECK HARNESS AND CONNECTOR (BATTERY TEMPERATURE SENSOR)
OK -- Continue to next step.

4. CHECK HYBRID BATTERY JUNCTION BLOCK ASSEMBLY (CURRENT SENSOR)

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.





Standard Voltage:





Text in Illustration





NOTICE:
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.

(h) Install the battery smart unit Installation.

(i) Install the battery cover.

NG -- CHECK HYBRID BATTERY JUNCTION BLOCK ASSEMBLY

OK -- REPLACE BATTERY SMART UNIT Components

5. CHECK HYBRID BATTERY JUNCTION BLOCK 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 the z33 battery current sensor connector from the hybrid battery junction block assembly.





(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.





Standard Voltage:





Text in Illustration





NOTICE:
Turning the power switch on (IG) with the HV relay assembly (battery current sensor) connector disconnected causes DTC P0AC2-123 to be set. Use the Techstream to clear the DTCs Hybrid Battery System.

(h) Connect the z33 battery current sensor connector to the hybrid battery junction block assembly.

(i) Install the battery cover Installation.

NG -- CHECK HARNESS AND CONNECTOR (BATTERY SMART UNIT - HYBRID BATTERY JUNCTION BLOCK ASSEMBLY)

OK -- REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY Components

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

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

7. CHECK HARNESS AND CONNECTOR (BATTERY SMART UNIT - 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) Remove the battery smart unit.

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

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





(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 (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 -- REPLACE BATTERY SMART UNIT Components

8. CHECK HARNESS AND CONNECTOR (BATTERY SMART UNIT - HYBRID BATTERY JUNCTION BLOCK 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) Remove the battery smart unit.

HINT
Disconnect only the z29 connector of the battery smart unit.

(e) Disconnect the z33 battery current sensor connector from the hybrid battery junction block assembly.





(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 z33 battery current sensor connector to the hybrid battery junction block assembly.

(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 -- REPLACE BATTERY SMART UNIT Components

9. CHECK HARNESS AND CONNECTOR (BATTERY TEMPERATURE SENSOR)

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 group of HV battery modules which includes the malfunctioning battery temperature sensor.

(e) Turn the group of HV battery modules over. Check the wire harness and connectors of the battery temperature sensor for abnormalities by sight and touch.

Specified Condition:

There are no open or short circuits in the wire harness and connectors. There are no short circuits to other wire harnesses.

(f) Install the HV battery assembly Installation.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE HV BATTERY ASSEMBLY Components