DESCRIPTION
The blower motor is operated by signals from the A/C amplifier. 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 inspection 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 / Air Conditioner / Active Test.
(e) Check the operation by referring to the table below.
Air Conditioner
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Blower Motor |
Blower motor |
Min.: 0, Max.: 31 |
- |
OK:
Blower motor operates and blower motor speed level changes.
Result |
Proceed to |
---|---|
OK |
A |
NG (Blower motor does not operate) |
B |
NG (Blower motor 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 - BODY GROUND) |
(a) Disconnect the blower motor connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D41-1 (GND) - Body ground |
Always |
Below 1 Ω |
*1 |
Front view of wire harness connector (to Blower Motor) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
CHECK HARNESS AND CONNECTOR (BLOWER MOTOR - 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 (BLOWER MOTOR - A/C AMPLIFIER) |
(a) Disconnect the A/C amplifier connector. |
|
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
INSPECT BLOWER MOTOR |
(a) Reconnect the blower motor connector.
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
NG | ![]() |
REPLACE BLOWER MOTOR |
|
6. |
INSPECT A/C AMPLIFIER |
(a) Remove the A/C amplifier. |
|
(b) Reconnect the A/C amplifier connector.
(c) Turn the ignition switch to ON.
(d) Turn the blower switch LO.
(e) Measure the waveform between terminal D47-23 (BLW) of the A/C amplifier and body ground.
Item |
Content |
---|---|
Tool setting |
1 V/DIV., 500 μs/DIV. |
Vehicle condition |
Ignition switch ON Blower switch LO |
OK:
Waveform is as shown in the illustration.
HINT:
The waveform varies with the blower speed.
Text in Illustration
*1 |
Component with harness connected (A/C Amplifier) |
OK | ![]() |
REPLACE BLOWER MOTOR |
NG | ![]() |
REPLACE A/C AMPLIFIER |
Front Right Sensor Malfunction (C1AE4)
DESCRIPTION
The No. 1 ultrasonic sensor (front right sensor) is installed on the front bumper.
The ECU detects obstacles based on signals received from the No. 1 ultrasonic sensor
(front right sensor). If the No. 1 ultrasonic sensor (front right sensor) h ...
Steering Lock Motor Drive Power Circuit
DESCRIPTION
The steering lock ECU (steering lock actuator assembly) is connected to the power
management control ECU. The steering lock ECU (steering lock actuator assembly)
cannot activate the motor unless it receives permission signals from both ECUs.
...
Removal
REMOVAL
PROCEDURE
1. REMOVE FRONT DOOR SCUFF PLATE LH
2. REMOVE COWL SIDE TRIM SUB-ASSEMBLY LH
3. REMOVE LOWER NO. 1 INSTRUMENT PANEL FINISH PANEL
4. REMOVE OUTER MIRROR SWITCH ASSEMBLY
(a) Disengage the 2 claws and remove the outer m ...