Battery Cooling Fan: Testing and Inspection

P112 HYBRID BATTERY CONTROL: BATTERY BLOWER: ON-VEHICLE INSPECTION

ON-VEHICLE INSPECTION

1. INSPECT BATTERY BLOWER
(a) Check the operation.
(1) Connect the Techstream to the DLC3.
(2) Turn the power switch ON (IG).
(3) Select the item:
Powertrain / HV Battery / Active Test / Cooling Fan Spd / 1 to 6.
NOTE: If the check results are normal, do not perform the following check.

(b) Inspect the resistance.
(1) Remove the service plug grip Removal.
(2) Disconnect the connector of the battery blower motor.




(3) Measure the resistance between terminals 1 and 2 of the connector.
Standard resistance:
9 Ohms or less
If the result is not as specified, replace the battery blower assembly.
(c) Inspect the voltage.




(1) Connect the connector of the blower motor.
(2) Measure the resistance between terminal 1 (GND) of the blower motor control connector and body ground.
Standard resistance:
1 Ohms or less
(3) Connect the negative terminal of the auxiliary battery.
Torque: 6.0 Nm (61 kgf-cm, 53 in-lbf)
(4) Connect the Techstream to the DLC3.
(5) Turn the power switch ON (IG).
(6) Select the item:
Powertrain / HV Battery / Active Test / Cooling Fan Spd / 1.




(7) Measure the voltage between terminals 1 (GND) of the blower motor connector and the body ground.
Standard voltage:
9 to 14 V
NOTE: If there is no voltage, there may be a defect in the power supply system relays or in the wire harness.
(8) Turn the power switch OFF, then disconnect the cable from the negative terminal of the auxiliary battery.
(9) Disconnect the battery blower motor, battery blower motor control, and connector of the battery ECU.





(10) Measure the resistance of the wire harness side connectors.
Standard resistance:





NOTE: If the result is not as specified, repair or replace the wire harness and recheck the blower motor operation by the Techstream.

(11) Measure the resistance of the wire harness side connectors.





Standard resistance:





NOTE: If the result is not as specified, repair or replace the wire harness and recheck the blower motor operation by the Techstream.

(12) Reconnect all the disconnected connectors.
NOTE: Do not connect the service plug grip.

(13) Connect the Techstream to the DLC3.
(14) Turn the power switch ON (IG).
(15) Select the item:
Powertrain / HV Battery / Active Test / Cooling Fan Spd / 1.





(16) Measure the voltage between terminals 1 (GND) and 2 (SI) of the battery blower motor control.
Standard voltage:
1 V or more
NOTE: If the result is not as specified, repair or replace the wire harness and recheck the blower motor operation by the Techstream.





(17) Measure the voltage between the terminals on the blower motor connector.
Standard voltage:
2 to 4 V
NOTE: If the result is not as specified, repair or replace the wire harness and recheck the blower motor operation by the Techstream.





(18) Measure the voltage between terminals 1 (GND) and 4 (VM) of the blower motor control.
HINT: A = (Measured voltage between terminals 1 (GND) of the blower motor connector and the body ground.)

Standard condition:
A - 4 V to A - 2 V
NOTE: If the result is not as specified, repair or replace the wire harness and recheck the blower motor operation by the Techstream.

(19) Recheck the blower motor operation by the Techstream, and perform the inspection again.