DTC Code | DTC Name |
---|---|
P0A8111 | Hybrid/EV Battery Cooling Fan 1 Circuit Short to Ground |
DESCRIPTION
The battery cooling blower assembly speed is controlled by the hybrid vehicle control ECU. Power is supplied to the battery cooling blower assembly when the MREL terminal of the hybrid vehicle control ECU turns on the IGCT relay. The hybrid vehicle control ECU sends command signals (SI0) to the battery cooling blower assembly to adjust the fan speed to an appropriate speed for the HV battery temperature. The frequency (FP0) of the battery cooling blower assembly is sent to the hybrid vehicle control ECU via the battery voltage sensor as a monitor signal using serial communication.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
---|---|---|---|---|---|
P0A8111 | Hybrid/EV Battery Cooling Fan 1 Circuit Short to Ground | Both of the following conditions are met:
(1 trip detection logic) |
|
Does not come on | Master Warning Light: Comes on |
DTC No. | Data List |
---|---|
P0A8111 |
|
The following items can be helpful when performing repairs:
Data List
Hybrid Battery Temperature 1 to 3
BATT Voltage
Tech Tips
"Hybrid Battery Cooling Fan 1 Frequency" is detected when the battery cooling blower assembly is operating and its value changes in proportion to the battery cooling blower assembly speed.
CONFIRMATION DRIVING PATTERN
Tech Tips
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Connect the GTS to the DLC3.
Turn the power switch on (IG) and turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the power switch off and wait for 2 minutes or more.
Turn the power switch on (IG) and turn the GTS on.
Enter the following menus: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.
Select fan mode 6 and operate the battery cooling blower assembly and wait for 10 seconds or more.
Tech Tips
Operation of the battery cooling blower assembly can be confirmed by checking if air is sucked into the air intake port of the intake duct.
Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
Check the DTC judgment result.
Tech Tips
If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.
If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
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 removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
Tech Tips
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
Note
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
Tech Tips
As the battery cooling blower assembly speed is excessively low, there is a possibility of an open or short to ground in connected circuits, or motor locking.
PROCEDURE
CHECK DTC OUTPUT (HYBRID CONTROL)
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
Check for DTCs.
Result | ||||||
---|---|---|---|---|---|---|
|
Turn the power switch off.
A |
GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here |
B |
PERFORM ACTIVE TEST USING GTS (DRIVING THE BATTERY COOLING FAN)
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
Clear the DTCs.
Enter the following menus: Powertrain / Hybrid Control / Active Test / Control the Hybrid Battery Cooling Fan.
Active Test Display |
---|
Control the Hybrid Battery Cooling Fan |
Data List Display |
---|
Hybrid Battery Cooling Fan |
Tester Display | Measurement Item | Control Range | Restrict Condition |
---|---|---|---|
Control the Hybrid Battery Cooling Fan | Battery cooling blower assembly operation and blower volume can be checked. | OFF, 1, 2, 3, 4, 5, 6 | Intake air temperature -10°C (14°F) or higher |
Select air volume mode 6 in the "Control the Hybrid Battery Cooling Fan" Active Test to operate the battery cooling blower assembly.
Note
If the Active Test cannot be performed, skip it and proceed to the next step to check if the fan operates and air is sucked. In accordance with fail-safe system operation, the hybrid vehicle control ECU sends a command to operate the battery cooling blower assembly.
Check that the battery cooling blower assembly operates, air is sucked into the inlet duct and the operation sound is normal.
Tech Tips
The battery cooling blower assembly may not stop even when turning the cooling fan off in the "Control the Hybrid Battery Cooling Fan" Active Test. This is due to HV system control and is not a malfunction.
OK |
---|
Battery cooling blower assembly operates |
Result | |||
---|---|---|---|
|
Turn the power switch off.
NG |
CHECK FUSE (BATT FAN) Click here |
OK |
CHECK HARNESS AND CONNECTOR (BATTERY VOLTAGE SENSOR - BATTERY COOLING BLOWER ASSEMBLY)
CAUTION:
Be sure to wear insulated gloves and protective goggles.
Check that the service plug grip is not installed.
Note
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.
Remove the No. 1 HV battery shield panel.
Tech Tips
Disconnect the M35 battery voltage sensor connector.
Tech Tips
Note
Before disconnecting the connector, check that it is not loose or disconnected.
Disconnect the M38 battery cooling blower assembly connector.
Note
Before disconnecting the connector, check that it is not loose or disconnected.
*a | Rear view of wire harness connector (to Battery Voltage Sensor) |
*b | Front view of wire harness connector (to Battery Cooling Blower Assembly) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG).
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
Note
Turning the power switch on (IG) with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the power switch is turned on (IG) with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.
Tech Tips
As there might be an intermittent malfunction, inspect the following items even if the measured voltage is as specified.
Check that each connector between the battery voltage sensor and battery cooling blower assembly is not loose or disconnected.
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
Reconnect the M38 battery cooling blower assembly connector.
Reconnect the M35 battery voltage sensor connector.
Install the No. 1 HV battery shield panel.
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
READ VALUE USING GTS (COOLING FAN FREQUENCY)
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Remove the No. 1 HV battery shield panel.
Tech Tips
Connect the cable to the negative (-) auxiliary battery terminal.
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
Clear the DTCs.
Enter the following menus: Powertrain / Hybrid Control / Data List / Hybrid Battery Cooling Fan 1 Frequency.
Active Test Display |
---|
Control the Hybrid Battery Cooling Fan |
Data List Display |
---|
Hybrid Battery Cooling Fan |
Hybrid Battery Cooling Fan 1 Frequency |
Tester Display | Measurement Item | Control Range | Restrict Condition |
---|---|---|---|
Control the Hybrid Battery Cooling Fan | Battery cooling blower assembly operation and blower volume can be checked. | OFF, 1, 2, 3, 4, 5, 6 | Intake air temperature -10°C (14°F) or higher |
Enter the following menus: Powertrain / Hybrid Control / Data List / Hybrid Battery Cooling Fan 1 Frequency.
Select each air volume mode 1 to 6 in the "Control the Hybrid Battery Cooling Fan" Active Test to operate the battery cooling blower assembly.
Note
If the Active Test cannot turn off the battery cooling blower assembly, skip it and proceed to the next step to check the frequency value. In accordance with fail-safe system operation, the hybrid vehicle control ECU sends a command to operate the battery cooling fan assembly.
*a | Component with harness connected (Battery Voltage Sensor) |
While the cooling fan is operating, compare the value in the Data List (Hybrid Battery Cooling Fan 1 Frequency) with the frequency value that was actually measured at the battery voltage sensor connector.
Specified Condition | ||||
---|---|---|---|---|
|
Note
Turning the power switch on (IG) with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
Tech Tips
Compare the values in each air volume mode 1 to 6. If the Active Test cannot be performed, compare the values only in the current air volume mode.
Result | ||||||
---|---|---|---|---|---|---|
|
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
Install the No. 1 HV battery shield panel.
B |
CHECK BATTERY VOLTAGE SENSOR (FREQUENCY) Click here |
A |
CHECK BATTERY VOLTAGE SENSOR
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Remove the rear seat cushion assembly.
Tech Tips
Disconnect the M38 battery cooling bower assembly connector.
Note
Before disconnecting the connector, check that it is not loose or disconnected.
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG).
*a | Front view of wire harness connector (to Battery Cooling Blower Assembly) |
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
Note
Turning the power switch on (IG) with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the power switch is turned on (IG) with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
Reconnect the M38 battery cooling blower assembly connector.
Install the rear seat cushion assembly.
Result | |||
---|---|---|---|
|
OK |
REPLACE BATTERY COOLING BLOWER ASSEMBLY Click here |
NG |
REPLACE BATTERY VOLTAGE SENSOR Click here |
CHECK BATTERY VOLTAGE SENSOR (FREQUENCY)
CAUTION:
Be sure to wear insulated gloves and protective goggles.
Check that the service plug grip is not installed.
Note
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.
Remove the No. 1 HV battery shield panel.
Tech Tips
Connect the cable to the negative (-) auxiliary battery terminal.
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
Clear the DTCs and freeze frame data.
Enter the following menus: Powertrain / Hybrid Control / Active Test / Control the Hybrid Battery Cooling Fan.
Active Test Display |
---|
Control the Hybrid Battery Cooling Fan |
Data List Display |
---|
Hybrid Battery Cooling Fan |
Hybrid Battery Cooling Fan 1 Frequency |
Tester Display | Measurement Item | Control Range | Restrict Condition |
---|---|---|---|
Control the Hybrid Battery Cooling Fan | Battery cooling blower assembly operation and blower volume can be checked. | OFF, 1, 2, 3, 4, 5, 6 | Intake air temperature -10°C (14°F) or higher |
Enter the following menus: Powertrain / Hybrid Control / Data List / Hybrid Battery Cooling Fan 1 Frequency.
Select each air volume mode 1 to 6 in the "Control the Hybrid Battery Cooling Fan" Active Test to operate the battery cooling blower assembly.
Note
If the Active Test cannot turn off the battery cooling blower assembly, skip it and proceed to the next step to check the frequency value. In accordance with fail-safe system operation, the hybrid vehicle control ECU sends a command to operate the battery cooling blower assembly.
*a | Component with harness connected (Battery Voltage Sensor) |
While the cooling fan is operating, compare the value in the Data List (Hybrid Battery Cooling Fan 1 Frequency) with the frequency value that was actually measured at the battery voltage sensor connector.
Specified Condition | ||||
---|---|---|---|---|
|
Note
Turning the power switch on (IG) with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
Tech Tips
Compare the values in each air volume mode 1 to 6. If the Active Test cannot be performed, compare the values only in the current air volume mode.
Result | ||||||
---|---|---|---|---|---|---|
|
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
Install the No. 1 HV battery shield panel.
A |
REPLACE BATTERY COOLING BLOWER ASSEMBLY Click here |
B |
REPLACE BATTERY VOLTAGE SENSOR Click here |
CHECK FUSE (BATT FAN)
*1 | No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly |
*2 | BATT FAN Fuse |
Remove the BATT FAN fuse from the No. 1 engine room relay block and No. 1 junction block assembly.
Measure the resistance of the BATT FAN fuse.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Install the BATT FAN fuse to the No. 1 engine room relay block and No. 1 junction block assembly.
Result | |||
---|---|---|---|
|
NG |
CHECK HARNESS AND CONNECTOR (BATT FAN FUSE - BATTERY COOLING BLOWER ASSEMBLY) Click here |
OK |
CHECK HARNESS AND CONNECTOR (IGCT RELAY - BATTERY COOLING BLOWER ASSEMBLY) (VOLTAGE)
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Remove the rear seat cushion assembly.
Tech Tips
Disconnect the M38 battery cooling bower assembly connector.
Note
Before disconnecting the connector, check that it is not loose or disconnected.
Connect the cable to the negative (-) auxiliary battery terminal.
Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
Clear the DTCs.
*a | Front view of wire harness connector (to Battery Cooling Blower Assembly) |
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
Note
Turning the power switch on (IG) with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
Turning the power switch on (IG) with the connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.
Tech Tips
As there might be an intermittent malfunction, inspect the following items even if the measured voltage is as specified.
Installation condition of fuse(s) (before removing fuse(s)) (IG circuit)
Fuse condition (before and after removing fuse(s)) (IG circuit)
Connection condition of connectors (IG circuit)
Wire harness condition (IG circuit)
Wire harness condition (GND circuit)
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
Install the rear seat cushion assembly.
Result | |||
---|---|---|---|
|
NG |
CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER ASSEMBLY - BODY GROUND) Click here |
OK |
CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - BATTERY COOLING BLOWER ASSEMBLY)
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Disconnect the F2 hybrid vehicle control ECU connector.
Note
Before disconnecting the connector, check that it is not loose or disconnected.
Check that each connector between the hybrid vehicle control ECU and battery cooling blower assembly is not loose or disconnected.
Remove the rear seat cushion assembly.
Tech Tips
Disconnect the M38 battery cooling blower assembly connector.
Note
Before disconnecting the connector, check that it is not loose or disconnected.
Check the terminals of the connector for deformation and corrosion.
*a | Front view of wire harness connector (to Hybrid Vehicle Control ECU) |
*b | Front view of wire harness connector (to Battery Cooling Blower Assembly) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Note
Make sure that each connector between the hybrid vehicle control ECU and battery cooling blower assembly is not loose or disconnected and its terminals are not deformed or corroded.
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG).
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
Note
Turning the power switch on (IG) with the service plug grip removed causes other DTCs to be stored. Clear the DTCs after performing this inspection.
If the power switch is turned on (IG) with the connectors disconnected, other DTCs will be stored. Be sure to clear the DTCs after the inspection.
Tech Tips
As there might be an intermittent malfunction, inspect the following items even if the measured voltage is as specified.
Check that each connector between the hybrid vehicle control ECU and battery cooling blower assembly is not loose or disconnected.
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
Reconnect the M38 battery cooling blower assembly connector.
Install the rear seat cushion assembly.
Reconnect the F2 hybrid vehicle control ECU connector.
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HYBRID VEHICLE CONTROL ECU
Remove the hybrid vehicle control ECU.
Tech Tips
Measure the resistance according to the value(s) in the table below.
*a | Component without harness connected (Hybrid Vehicle Control ECU) |
- | - |
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Install the hybrid vehicle control ECU.
Result | |||
---|---|---|---|
|
NG |
REPLACE HYBRID VEHICLE CONTROL ECU Click here |
OK |
CHECK HYBRID VEHICLE CONTROL ECU (SI0 VOLTAGE)
Turn the power switch on (IG).
Measure the voltage according to the value(s) in the table below.
*a | Component with harness connected (Hybrid Vehicle Control ECU) |
- | - |
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
Turn the power switch off.
Result | |||
---|---|---|---|
|
NG |
REPLACE BATTERY COOLING BLOWER ASSEMBLY Click here |
OK |
CHECK BATTERY COOLING BLOWER ASSEMBLY
Connect the cable to the negative (-) auxiliary battery terminal.
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
Clear the DTCs.
Enter the following menus: Powertrain / Hybrid Control / Active Test / Control the Hybrid Battery Cooling Fan.
Active Test Display |
---|
Control the Hybrid Battery Cooling Fan |
Data List Display |
---|
Hybrid Battery Cooling Fan |
Tester Display | Measurement Item | Control Range | Restrict Condition |
---|---|---|---|
Control the Hybrid Battery Cooling Fan | Battery cooling blower assembly operation and blower volume | OFF, 1, 2, 3, 4, 5, 6 | Intake air temperature -10°C (14°F) or higher |
Select each air volume mode 1 to 6 in the "Control the Hybrid Battery Cooling Fan" Active Test to operate the battery cooling blower assembly.
Note
If the Active Test cannot turn off the battery cooling blower assembly, skip it and proceed to the next step to check the waveform. In accordance with fail-safe system operation, the hybrid vehicle control ECU sends a command to operate the battery cooling blower assembly.
Connect an oscilloscope to the F2 hybrid vehicle control ECU connector and check the waveform.
*a | Component with harness connected (Hybrid Vehicle Control ECU) |
- | - |
Item | Content |
---|---|
Tester Connection | F2-38(SI0) - F2-12(E01) |
Equipment Setting | 10 V/DIV., 1 ms./DIV. |
Condition | Power switch on (IG), during Active Test |
Tech Tips
Perform this inspection with the hybrid vehicle control ECU connector connected.
The wave length will vary with the operating speed of the battery cooling blower assembly.
Turn the power switch off.
*a | Waveform 1 |
Disconnect the cable from the negative (-) auxiliary battery terminal.
Result | ||||||
---|---|---|---|---|---|---|
|
A |
REPLACE BATTERY COOLING BLOWER ASSEMBLY Click here |
B |
REPLACE HYBRID VEHICLE CONTROL ECU Click here |
CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER ASSEMBLY - BODY GROUND)
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Remove the rear seat cushion assembly.
Tech Tips
Disconnect the M38 battery cooling bower assembly connector.
Note
Before disconnecting the connector, check that it is not loose or disconnected.
*a | Front view of wire harness connector (to Battery Cooling Blower Assembly) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Connect the M38 battery cooling bower assembly connector.
Install the rear seat cushion assembly.
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - BODY GROUND)
Disconnect the F2 hybrid vehicle control ECU connector.
Note
Before disconnecting the connector, check that it is not loose or disconnected.
*a | Front view of wire harness connector (to Hybrid Vehicle Control ECU) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Reconnect the F2 hybrid vehicle control ECU connector.
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - BODY GROUND)
Disconnect the F2 hybrid vehicle control ECU connector.
Note
Before disconnecting the connector, check that it is not loose or disconnected.
*a | Front view of wire harness connector (to Hybrid Vehicle Control ECU) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Reconnect the F2 hybrid vehicle control ECU connector.
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (IGCT RELAY - BATTERY COOLING BLOWER ASSEMBLY)
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Remove the IGCT relay from the No. 1 engine room relay block and No. 1 junction block assembly.
Note
Check the terminals of the relay for deformation and corrosion.
Remove the rear seat cushion assembly.
Tech Tips
Disconnect the M38 battery cooling blower assembly connector.
Note
Check that each connector between the IGCT relay and battery cooling blower assembly is not loose or disconnected.
Before disconnecting the connector, check that it is not loose or disconnected.
*1 | No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly |
*a | Front view of wire harness connector (to Battery Cooling Blower Assembly) |
*b | IGCT Relay Holder |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Note
When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder.
Check that each connector between the IGCT relay and battery cooling blower assembly is not loose or disconnected.
Reconnect the M38 battery cooling blower assembly connector.
Install the rear seat cushion assembly.
Install the IGCT relay to the No. 1 engine room relay block and No. 1 junction block assembly.
Result | |||
---|---|---|---|
|
OK |
REPLACE HYBRID VEHICLE CONTROL ECU Click here |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
CHECK HARNESS AND CONNECTOR (BATT FAN FUSE - BATTERY COOLING BLOWER ASSEMBLY)
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Remove the BATT FAN fuse from the No. 1 engine room relay block and No. 1 junction block assembly.
Remove the rear seat cushion assembly.
Tech Tips
Disconnect the M38 battery cooling blower assembly connector.
Note
Before disconnecting the connector, check that it is not loose or disconnected.
*1 | No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly |
*a | Front view of wire harness connector (to Battery Cooling Blower Assembly) |
*b | BATT FAN Fuse Holder |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Note
When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder.
Reconnect the M38 battery cooling blower assembly connector.
Install the rear seat cushion assembly.
Install the BATT FAN fuse to the No. 1 engine room relay block and No. 1 junction block assembly.
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR Click here |
OK |
CHECK BATTERY COOLING BLOWER ASSEMBLY
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Remove the rear seat cushion assembly.
Tech Tips
Disconnect the M38 battery cooling blower assembly connector.
Note
Before disconnecting the connector, check that it is not loose or disconnected.
*a | Component without harness connected (Battery Cooling Blower Assembly) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Note
When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder.
Reconnect the M38 battery cooling blower assembly connector.
Install the rear seat cushion assembly.
Result | |||
---|---|---|---|
|
OK |
REPLACE FUSE (BATT FAN) |
NG |
REPLACE BATTERY COOLING BLOWER ASSEMBLY
Tech Tips
Result | ||
---|---|---|
|
NEXT |
REPLACE FUSE (BATT FAN) |
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result | ||
---|---|---|
|
NEXT |
REPLACE FUSE (BATT FAN) |