Toyota Corolla 2004 Electrical Wiring Diagram - Radiator Fan

Radiator Fan

BAT

2

1

)

30A
RDI
FAN

B–W

(IG)(

10A
ECU–IG

IC13

B–W

11

51

FAN
NO. 1
Relay

32

11

B–W W–R

11

13

FAN
NO. 2
Relay

25

11

4

1

B–RW–R

2

M

1

R 1

Radiator
Fan Motor

LG

EA1 EA11

6

LG

B16
B21

E 3(A), E 4(B

Engine Control Module

LG–B

LG–B

A14(1ZZ–FE
B9(2ZZ–GE

FANCF

)

)

)

LG–B

3

P 2

Pressure
SW

Single

W–B

L–WW–BW–B

2

12

R 2

Radiator

Fan Resistor

212

W–B W–B

EA

COROLLA (EM00H0U)

ED

R2

R1

:

:

:

EA1

Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)

:

EA

Front Right Fender

ED

Front Left Suspension T ower

System Outline

The current is applied at all times through the RDI FAN fuse to TERMINAL 5 of the FAN NO.1 relay.
When the ignition SW is turned on, the current flows through the ECU–IG fuse to FAN NO.1 relay (Coil side) to TERMINAL
CF of the engine control module. At the same time as this current flow, the current from ECU–IG fuse flows to the FAN NO.2
relay (Coil side) to TERMINAL 3 of the pressure SW.

1. Low Speed Operation

When the A/C system is operating, the FAN NO.1 relay is turned on. As a result, the current flows from the RDI FAN fuse to
FAN NO.1 relay (Point side) to TERMINAL 2 of the radiator fan motor to TERMINAL 1 to TERMINAL 3 of the FAN NO.2 relay
to TERMINAL 4 to TERMINAL 2 of the radiator fan resistor to TERMINAL 1 to GROUND, and the radiator fan motor rotates
at low speed.

2. High Speed Operation

When the pressure SW is on or engine control module operated, the FAN NO.1 and NO.2 relay is turned on. As a result, the
current flows from the RDI FAN fuse to FAN NO.1 relay (Point side) to radiator fan motor to TERMINAL 3 of the FAN NO.2
relay to TERMINAL 5 to GROUND, and the radiator fan motor rotates at high speed.

: Parts Location

Code See Page Code See Page Code See Page
E3 A 36 P2 35 (2ZZ–GE)
E4 B 36

P2 33 (1ZZ–FE)

33 (1ZZ–FE)
35 (2ZZ–GE)

33 (1ZZ–FE)
35 (2ZZ–GE)

Relay Blocks

Code See Page Relay Blocks (Relay Block Location)

1 22 Engine Room R/B (Engine Compartment Left)

Junction Block and Wire Harness Connector

Code See Page Junction Block and Wire Harness (Connector Location)

IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)

Connector Joining Wire Harness and Wire Harness

Code See Page Joining Wire Harness and Wire Harness (Connector Location)

42 (1ZZ–FE)
43 (2ZZ–GE)

Ground Points

Code See Page Ground Points Location

42 (1ZZ–FE)
43 (2ZZ–GE)
42 (1ZZ–FE)
43 (2ZZ–GE)

COROLLA (EM00H0U)

213