Seat Blower Control Circuit

AIR CONDITIONING: AIR CONDITIONING SYSTEM: Seat Blower Control Circuit
- Seat Blower Control Circuit

DESCRIPTION

The seat blower changes airflow volume according to a signal from the A/C amplifier.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - SEAT CLIMATE CONTROL BLOWER)

(a) Disconnect the connector from A/C amplifier.

(b) Disconnect the connector from the seat climate control blower.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (SEAT CUSHION CLIMATE BLOWER - SEAT BACK CLIMATE BLOWER)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL BLOWER - BATTERY)

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





Standard Standard:





Result:





C -- GO TO PUSH BUTTON START SYSTEM

B -- GO TO STARTING SYSTEM
A -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL BLOWER - BODY GROUND)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. INSPECT AIR CONDITIONING AMPLIFIER

(a) Remove the A/C amplifier with connectors still connected.





(b) Turn the ignition switch on (IG).

(c) Measure the waveform according to the value(s).





Standard:





OK:

Waveform appears as shown in the illustration.

HINT
Waveform varies with the blower level.

NG -- REPLACE AIR CONDITIONING AMPLIFIER

OK -- REPLACE SEAT CLIMATE CONTROL BLOWER