C44-1

E/TCM (3.0L/3.5L)

C44-2

E/TCM (3.0L/3.5L)

C44-3

E/TCM (3.0L/3.5L)

C46

Engine control relay (3.0L/3.5L)

C144-4

ECM (2.0L/2.5L)

C146

Engine control relay (2.0L/2.5L)

E04

A/C compressor

E07

Triple switch

I01

Blower motor

I03

Intake actuator

I05

Blower resistor

I09

Temperature switch

I10

Thermostatic switch

I11

Temperature actuator

I19

Mode actuator

I20

Joint connector

I24

Rear vent actuator

I25

Rear vent switch

M08

Joint connector

M33-3

ETACM

EE01

JC01

JC101

JE01

I/P-B

I/P-E

I/P-J

I/P-K

JM09

MI02

MI03

G05

Circuit Description

Blower Control

When the ignition switch in ON, battery voltage is applied to the coil of the blower relay. With blower switch in any position except OFF, ground is provided to the coil of the blower relay through the blower switch. Battery voltage is then applied to the blower motor through the closed contacts of the blower relay, ground is provided to the blower motor through blower resistor and blower switch for the desired blower motor speed. As the blower switch is moved from OFF to position 4, resistors in the resistor block are bypassed. Decreasing the resistance will increase the current applied tothe blower motor. This increases the blower motor speed.

When the fan switch is in position 4, all of the resistors are bypassed. The maximum current is now applied to the blower motor so that it runs atthe highest speed.

A/C Control

With the ignition switch in ON, battery voltage is applied to the coil of the blower relay from fuse 12. With the blower switch in any position except OFF, ground is provided to the coil of the blower relay through the blower switch. With the A/C switch in ON, the ECM, E/TCM will ground the coil of the A/C relay after a short delay to adjust idle speed. Battery voltage will then be applied to the magnetic clutch of the compressor from A/C compressorfuse, to make the A/C compressor run.