Blower Motor Circuit [10/2014 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Air Conditioner / Active Test.
5. Check the operation by referring to the table below.
   AIR CONDITIONER
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Blower Motor	Blower motor with fan sub-assembly	Min.: 0, Max.: 31	-

   Result

   Result	Proceed to
   NG (blower motor does not operate)	A
   NG (blower motor operates but does not change speed)	B
   OK	C

Result: 

B 

See step  6

Result: 

C 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [10/2014 - 10/2015] or PROBLEM SYMPTOMS TABLE [10/2015 - ] )

Result: 

A 

See step  2

1. Disconnect the D60 blower motor with fan sub-assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D60-1 (GND) - Body ground	Always	Below 1 Ω

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   D60-3 (+B) - Body ground	Power switch off	11 to 14 V

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Disconnect the D62 air conditioning amplifier assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D62-22 (BLW) - D60-2 (SI)	Always	Below 1 Ω
   D62-22 (BLW) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Reconnect the D60 blower motor with fan sub-assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   D62-22 (BLW) - Body ground	Power switch off	4.5 to 5.5 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Air Conditioning Amplifier Assembly)

Result: 

NG 

REPLACE BLOWER MOTOR WITH FAN SUB-ASSEMBLY 

(Refer to DISASSEMBLY [10/2014 - ] )

Result: 

OK 

See step  6

1. Remove the air conditioning amplifier assembly (Refer to REMOVAL [10/2014 - ] ).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Reconnect the D62 air conditioning amplifier assembly connector.
3. Turn the power switch on (IG).
4. Turn the blower switch on (LO).
5. Measure the waveform between terminal D62-22 (BLW) of the air conditioning amplifier assembly and body ground.

   OK

   Waveform is similar to that shown in the illustration.

   HINT: 

   The waveform varies with the blower speed.

   Item	Content
   Tool setting	1 V/DIV., 500 μs./DIV.
   Vehicle condition	Power switch on (IG) Blower switch: LO

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Air Conditioning Amplifier Assembly)

Result: 

OK 

REPLACE BLOWER MOTOR WITH FAN SUB-ASSEMBLY 

(Refer to DISASSEMBLY [10/2014 - ] )

Result: 

NG 

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )