DESCRIPTION
The blower motor with fan sub-assembly is operated by signals from the air conditioning amplifier assembly. Blower motor speed signals are transmitted in accordance with changes in the duty ratio.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
1. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Air Conditioner / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Air Conditioner > Active Test
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
---|---|---|---|
Blower Motor |
Blower motor with fan sub-assembly |
Min.: 0, Max.: 31 |
- |
Tester Display |
---|
Blower Motor |
Result |
Proceed to |
---|---|
OK |
A |
NG (Blower motor with fan sub-assembly does not operate) |
B |
NG (Blower motor with fan sub-assembly operates but does not change speed) |
C |
A | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
C | ![]() |
GO TO STEP 6 |
|
2. |
CHECK HARNESS AND CONNECTOR (BLOWER MOTOR WITH FAN SUB-ASSEMBLY - BODY GROUND) |
(a) Disconnect the A85 blower motor with fan sub-assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A85-1 (GND) - Body ground |
Always |
Below 1 Ω |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
CHECK HARNESS AND CONNECTOR (BLOWER MOTOR WITH FAN SUB-ASSEMBLY - BATTERY) |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BLOWER MOTOR WITH FAN SUB-ASSEMBLY) |
(a) Disconnect the F139 air conditioning amplifier assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F139-6 (BLW) - A85-2 (SI) |
Always |
Below 1 Ω |
F139-6 (BLW) or A85-2 (SI) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
INSPECT BLOWER MOTOR WITH FAN SUB-ASSEMBLY |
(a) Reconnect the A85 blower motor with fan sub-assembly connector.
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
NG | ![]() |
REPLACE BLOWER MOTOR WITH FAN SUB-ASSEMBLY |
|
6. |
INSPECT AIR CONDITIONING AMPLIFIER ASSEMBLY |
(a) Reconnect the F139 air conditioning amplifier assembly connector.
(b) Turn the ignition switch ON.
(c) Turn the blower switch on (LO).
(d) Connect an oscilloscope to terminals F139-6 (BLW) and F139-4 (GND) of the air conditioning amplifier assembly and check the waveform. OK: Waveform is similar to that shown in the illustration. HINT: The waveform varies with the blower speed.
|
|
OK | ![]() |
REPLACE BLOWER MOTOR WITH FAN SUB-ASSEMBLY |
NG | ![]() |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
Toyota CH-R Service Manual > Audio And Visual System(for Radio Receiver Type): Noise Occurs
PROCEDURE
1.
NOISE CONDITION
(a) Check from which direction the noise comes (front left or right, rear left
or right).
OK:
The location of the noise source can be determined.
NG
GO TO STEP 3
OK
...
Toyota CH-R Service Manual > Navigation System: Illumination for Panel Switch does not Come on with Tail Switch ON
CAUTION / NOTICE / HINT
NOTICE:
Depending on the parts that are replaced during vehicle inspection or
maintenance, performing initialization, registration or calibration may
be needed. Refer to Precaution for Navigation System.
Click here
When replacing the radio ...