engine TOYOTA HIGHLANDER 2001 Service Repair Manual

2005 HIGHLANDER (EWD592U)
292
Radiator Fan and Condenser Fan for 3MZ-FE
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E248 (3MZ-FE)Engine Room Main Wire

2005 HIGHLANDER (EWD592U)
295
25 1322
22
R- Y
B- Y
1 2
B- Y L- W
W- B
EG
W- BR- W
B- Y2G 7
2A 82G 6
A A
IK2 7
Y B- RB- R
Y
B- R
B- R
B- R FAN NO. 1
Relay
R 1J 5
B- Y
R- Y
R- Y B- R B- RY
R- W10A
HEATER
1G 8
FAN
CFE 2
E 14 E19
C 82 1
G- B
E 2
THWBR
EB2 5MFrom Power Source System (
See Page 62)
E 7(
E)
, E 9(
C)
Engine Coolant
Temp. Sensor
Engine Contr ol
ModuleJunction
Connector
Radiator Fan
Motor
E 28
E2A 5
B 5
BR
Shor t Connector S28(
A)
, S29(
B)

2005 HIGHLANDER (EWD592U)
296
Radiator Fan and Condenser Fan for 2AZ-FE
The radiator fan motor and condenser fan motor operates according to the engine coolant temp. SW, A/C single pressure
SW, the engine system condition, and the A/C system condition. The FAN NO.1 relay, FAN NO.2 relay, FAN NO.3 relay are
turned on/off, to operate the fan motors at low speed (In series), or high speed (In parallel).
1. Low Speed Operation
Either when the A/C system is operating, the radiator fan motor and A/C condenser fan motor operates at low speed.
2. High Speed Operation
When either the engine coolant temp. SW or A/C single pressure SW is, or both of them are turned on, the radiator fan motor
and A/C condenser fan motor operate at high speed.
A3 Pressure SW
3-2 : Open above approx. 15.5 kgf/cm2 (220 psi, 1520 kpa)
Close below approx. 12.5 kgf/cm2 (178 psi, 1226 kpa)
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A340 (2AZ-FE)E9C42R141 (2AZ-FE)
C540 (2AZ-FE)F740 (2AZ-FE)S28A43
E240 (2AZ-FE)J241 (2AZ-FE)S29B43
E7E42J543
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
222Engine Room R/B (Engine Compartment Left)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1G29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2A
2B
2E27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
2F
gg(g)
2G
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
EB250 (2AZ-FE)Engine Wire and Engine Room Main Wire (Front Side of Engine Room R/B)
IK254Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)
: GROUND POINTS
CodeSee PageGround Points Location
EG50 (2AZ FE)Under the Left HeadlightEH50 (2AZ-FE)Under the Left Headlight
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E250 (2AZ-FE)Engine Room Main Wire
System Outline
Service Hints

2005 HIGHLANDER (EWD592U)
300
Automatic Air Conditioning
2B
B 1B
5IK332
B- R B
TAM MPD2 MPD1
E 28
BR BR
E2 * 4 : w/o Navigation System * 3 : w/ Navigation System * 2 : 2AZ- FE * 1 : 3MZ- FE
(
*2) (
*1)BR
BR
BR
EE 5B
5A
6 EB2
A 1
2
1
A 3G 5 A17
MPX2 MPX1 22 244
11
BR
BR
V(
*3) G(
*3) R BRP 5
3E 13J 12
G
2A 1A YIB2 8
4F 7
4A 5
IL2 12
B 2
A 9MPX-
Y
IB2 1
IF3 5
A 10
B 6
B 18 B2 2A8
22C 2E3
IK3 18
B 1C 23
IK3 2
1
4
EH A2 13EB2 9
ED A A
J 7
W
J 2 78 MPX1 MPX2
SB
YV
GR G(
*4)
MPX2
MPX1
MPX1
LCK1
BR BRW- B G L
W- L
B- Y A 2
OY-G
Y- G
OMG CLT
Relay IK27
23 15 B- R
MPX+
A 21 9 BIL2 1B 29
SB GR
MPX- MPX+Y
HP MPX2ACMG
Diode
(
Cooling Fan) Y- G
(
*1) B 9(
A)
, B10(
B)
E 6(
B)
, E 7(
E)
, E 9(
C)
A10(
A)
, A11(
B)
S30(
A)
, S31(
B)
Dual
S28(
A)
, S29(
B)
C11(
A)
, C12(
B)
A/C Ambient Temp. Sensor
A/C Magnetic Clutch
A/C Lock Sensor Pr essure SW
A/C Contr ol Assembly
Air bag Sensor
Assembly
Body ECU
Combination MeterEngine Control Module
Gateway ECU
Ju nctio n
ConnectorJunction
Connector Power Window Master SW
with ECU
Short ConnectorShort Connector
E14 : * 1
E 9 : * 2
BR
1 2Engine Coolant
Temp. Sensor E 2
E 19THW
G- B G- B BR
W- B
W- B
BR
(
*2) (
*1) (
*1)(
*2)

2005 HIGHLANDER (EWD592U)
301
A3 Pressure SW
1-4 : Open with the pressure less than 2.0 kgf/cm2 (28 psi, 196 kpa) or above 32 kgf/cm2 (455 psi, 3138 kpa)
A10 (A) A/C Control Assembly
(A)12-Ground : Always approx. 12 volts
(A) 2-Ground : Approx. 12 volts with the ignition SW at ON position
(A) 11-Ground : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A138 (3MZ-FE)B742H943A140 (2AZ-FE)B9A42J239 (3MZ-FE)
A238 (3MZ-FE)B10B42J241 (2AZ-FE)A240 (2AZ-FE)C11A42J543
A338 (3MZ-FE)C12B42J743A340 (2AZ-FE)E238 (3MZ-FE)P544
A10A42E240 (2AZ-FE)R643
A11B42E6B42S28A43
A1242E7E42S29B43
A1342E9C42S30A43
A1442E1242S31B43
A1542F738 (3MZ-FE)T1543
A1742F740 (2AZ-FE)
B642G543
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1G29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1K28Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
2A
2C27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
2E
gg(g)
3A
3E30
3FInstrument Panel Wire and Center J/B (Behind the Instrument Panel Center)
3I31
()
3J31
4A
4F33Cowl Wire and Passenger Side J/B (Right Side of Grove Box)4HCowl Wire and Passenger Side J/B (Right Side of Grove Box)
4L32
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
EB248 (3MZ-FE)Engine Wire and Engine Room Main Wire (Front Side of Engine Room R/B)EB250 (2AZ-FE)Engine Wire and Engine Room Main Wire (Front Side of Engine Room R/B)
IB252Front Door LH Wire and Cowl Wire (Left Kick Panel)
IC352Engine Room Main Wire and Cowl Wire (Left Cowl Side Panel)
IF352Instrument Panel Wire and Cowl Wire (Right Side of Instrument Panel J/B)
IH154Cowl Wire and A/C Sub No.2 Wire (Upper Portion of Right Instrument Panel Brace)
IJ154Instrument Panel Wire and A/C Sub No.3 Wire (Upper Portion of Right Instrument Panel Brace)
IK2
IK354Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)
IK4
g(g)
IL254Instrument Panel Wire and Cowl Wire (Upper Side of Passenger Side J/B)
Service Hints

2005 HIGHLANDER (EWD592U)
302
Automatic Air Conditioning
: GROUND POINTS
CodeSee PageGround Points Location
ED48 (3MZ-FE)Rear Side of
EE50 (2AZ-FE)Intake Side of Cylinder Block
EH48 (3MZ-FE)Under the Left HeadlightEH50 (2AZ-FE)Under the Left Headlight
IA52Left Cowl Side Panel
IB52Right Instrument Panel Brace
IC52Right Cowl Side Panel
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E950 (2AZ-FE)Engine WireI1254A/C Sub No.2 Wire
E1448 (3MZ-FE)Engine WireI1454A/C Sub No.3 Wire

2005 HIGHLANDER (EWD592U)
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B 29B 2
1B C2323 15 2A8
IK27
2C 22E3
IK3 18 IL2 1
EB2 9
IK3 2
EH A4 1
EE EDA A2 13
A 2
A 3
J 7
J 2B- R Y
SB GR
O
B- YY- G
Y- G
MG CLT
Relay
MPX2
L
W- L G W- B
BR BR BR
(
*2) (
*1)
* 1 : 3MZ- FE
* 2 : 2AZ- FE
PRE LCK1ACMG
Diode
(
Cooling Fan) Y- G
(
*1)
18 BMPX1
B 6
A 10MPX2 MPX1B 9A 21
MPX+ MPX-
OWY
Y
Y
O* 3 : w/ Navigation System
* 4 : w/o Navigation System
E 5(
A)
, E 6(
B)
, E 9(
C)
C11(
A)
, C12(
B)
DualB 9(
A)
, B10(
B)
A/C Magnetic Clutch
A/C Lock Sensor
Pr essure SW
Body ECUCombination Meter
Engine Control Module
Junction
ConnectorJunction
Connector

2005 HIGHLANDER (EWD592U)
309
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A238 (3MZ-FE)B642F740 (2AZ-FE)A240 (2AZ-FE)B842G543
A338 (3MZ-FE)B9A42H943A340 (2AZ-FE)B10B42J239 (3MZ-FE)
A10A42C11A42J241 (2AZ-FE)
A11B42C12B42J543
A1342E5A42J743
A1442E6B42P544
A1542E9C42S30A43
A1742E1242S31B43
B542F738 (3MZ-FE)T1543
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1G29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1K28Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
2A
2C27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
2E
gg(g)
3A
3E30
3FInstrument Panel Wire and Center J/B (Behind the Instrument Panel Center)
3I31
()
3J31
4A
4F33Cowl Wire and Passenger Side J/B (Right Side of Grove Box)4HCowl Wire and Passenger Side J/B (Right Side of Grove Box)
4L32
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
EB248 (3MZ-FE)Engine Wire and Engine Room Main Wire (Front Side of Engine Room R/B)EB250 (2AZ-FE)Engine Wire and Engine Room Main Wire (Front Side of Engine Room R/B)
IB252Front Door LH Wire and Cowl Wire (Left Kick Panel)
IC352Engine Room Main Wire and Cowl Wire (Left Cowl Side Panel)
IF352Instrument Panel Wire and Cowl Wire (Right Side of Instrument Panel J/B)
IG152Instrument Panel Wire and Cowl Wire (Upper Portion of Right Instrument Panel Brace)
II154Instrument Panel Wire and A/C Sub No.1 Wire (Upper Portion of Right Instrument Panel Brace)
IJ154Instrument Panel Wire and A/C Sub No.3 Wire (Upper Portion of Right Instrument Panel Brace)
IK2
IK354Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)
IK4
g(g)
IL254Instrument Panel Wire and Cowl Wire (Upper Side of Passenger Side J/B)

2005 HIGHLANDER (EWD592U)
310
Manual Air Conditioning
: GROUND POINTS
CodeSee PageGround Points Location
ED48 (3MZ-FE)Rear Side of Cylinder Head
EE50 (2AZ-FE)Intake Side of Cylinder Block
EH48 (3MZ-FE)Under the Left HeadlightEH50 (2AZ-FE)Under the Left Headlight
IA52Left Cowl Side Panel
IB52Right Instrument Panel Brace
IC52Right Cowl Side Panel
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
I654Engine WireI1454A/C Sub No.3 Wire
I1354A/C Sub No.1 Wire

2005 HIGHLANDER (EWD592U)
313
R24 Rear Heater Main SW
6-Ground : Approx. 12 volts with the ignition SW at ON position
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
J543R2443R2645
J1944R2545R2745
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
222Engine Room R/B (Engine Compartment Left)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1G29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1K28Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IA252Cowl Wire and Floor No.2 Wire (Left Kick Panel)
IK254Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)
IO154Cowl Wire and Floor Wire (Right Kick Panel)
IR154Instrument Panel Wire and Floor Wire (Under the Shift Lever)
BH156Floor No.2 Wire and Floor Wire (Near the Rear Side Marker Light RH)
: GROUND POINTS
CodeSee PageGround Points Location
BB56Right Center Pillar
BF56Near the Rear Side Marker Light RH
Service Hints