Engine Control for 2TR - · PDF file10/2/2008 · Engine Control for 2TR−FE The engine control system utilizes a microcomputer and maintains overall control of the engine, etc. An

2005 TOYOTA TACOMA (EWD614U)

100

Engine Control for 2TR−FE

20AEFI

From Power Source System (See Page 72)

2

2

1

2

3 2

5 1

2 2

2 2

2 2

2

2 3

1 5

E 3

15AA/FHEATER

2

2

1

2A302A11 2A31

2A33

E 3

2

2

E 5

EBEA

2A102A9

2

3 2

5 1

2 2

2

15AIGN

1C13 1I15

L L

G−W

O

B−R

L−B

B

L−W

L−W

W

L−W

B−R B OL

G−W

O

B

B−R L−B

W−B

W−B

W−B

W−BBB

B

W−B

W−B W

L−W

1

2

B−RL

B

10A

EF

I NO

. 2

EFI

Rel

ay

A/F

HE

AT

ER

Rel

ay

C/O

PN

Rel

ay

2C1

1

2

5 6AM2 IG2

ST2

BW−R

30A

AM

2

2

Battery

1B9

1B11

B−R

B−R

EA17

B−R

I 7

8 IB1

5

4

BD

F19

B−R

W−B

W−B

2B1

2A4

W

Ignition SW

Fue

l Suc

tion

Pum

pan

d G

age

Ass

embl

y

M


101

B−R

O

L

G−W

L−B

B

L−W

L−W

W

7. 5ASTA


2

2

1

2A6

2A5

2B3

2

1

2

1

P

N

4

5

PB18

PB9

PD3

2B4

2A7

C 8

P 1

D 6

VV

V V

L−B

V

( A/T

)

( A/T

)B−Y

( A/T

)

B−Y

( M/T

)

B L

( M/T

)

B−R

L−W

L−W

W

2B5

A1

A2 B1

1

2

EA

B5

EA19

B6

1

2

B2 B4 B3

EA16 EA12 EA18

VB E VV BATT DI EIP EIV

L−W

B

L−B

B−Y

G−R

Y−R

R−W

W−B

O

L

G−W

V(A/T)

L−R

L−W

G−R

Y−R

R−W

B

W−B

L−R

W−B

G−R

Y−R

R−W

W−B

W−B

W−B

2

50AAIRPMP

1

2

WW

+B

A10

A 9

A 6(A), A 7(B)

B−Y

Clu

tch

Sta

rt S

W

Air

Pum

p

Dio

de( C

lutc

h S

tart

)

Air

Sw

itchi

ngV

alve

Par

k/N

eutr

alP

ositi

on S

W

V

(M/T)

DD4

DD12

(M/T

)

L−B

Air Injection Control Driver

M


102


( 4W

D)

8 D

IA110

3 D

IA11

MREL BATT

FC

D25

1H3

1B6

+B

D1

G−W

9 D

IGSW

2

1

2

1

2

1

2

1

E 9 E 9 E 9

6 B

#10

5 B

#20

2 B

#30

1 B

#40

W−B

2A13

L

B

PRG

B23

2B9

2

1

VG

B28

E2G

B30

THA

B29

2B10

2A18 2B6

V(A/T)

2A15

R−L

R−WR−YY

O

L−W

L−W

R−W

Y−R

G−R

B−Y

L−W

B 14 2A

L−B

G−R

20 B

AIDIAIRP

A11

Y−R

R−W

24 A

AIRV

W

W−B

BR

L−W

L−W

L−WL−

W

L−W

BR

+B E2

VG E2G THA

1 5

3 2 4

BL−B

R−LOL

G−W B R G

B−R

B−R

B−R

B−R

M 1

V 4

F 5

F 6

F 7

F 8 2

1

13 A

OC1+

L−W

C 2

12 A

OC1−

W

( A/T

)

30 D

NSW

V

STA

D12

B−Y

B−R

21 B

4WD

LG−B

AD

D A

ctua

tor

Ass

embl

y

B−R

L−W

L−W

B−R

W

E 4(A), E 5(B), E 7(C), E 8(D)

* 1 : Shielded* 2 : w/ VSC* 3 : w/o VSC

IA114

L−B

IH111

B−Y

L−W

Mas

s A

irFl

ow M

eter

Engine Control Module

VS

V (

EV

AP

)

Fue

l Inj

ecto

r( N

o. 1

)

Fue

l Inj

ecto

r( N

o. 2

)

Fue

l Inj

ecto

r( N

o. 3

)

Fue

l Inj

ecto

r( N

o. 4

)

Cam

shaf

t Ti

min

g O

ilC

ontr

ol V

alve

IF19

BR


103

R

OX1B

A25

HT1B

A2

W G

OX1B HT1B

+B E2

2 4

3 1

L−W

BR

A1A+

A21

HA1A

A1

P L

A1A+ A1A−

+B HA1A

2 1

3 4

W

I 7 I 7

2

1

A1A−

A31

C 1

2

H 3

A 4

3

G2

A26 27

NE+

I 7

EH

1

61

L−W

( *1) L G

W−B

BR

L−W

BR7

J12

BR

BR

BR

BR

BR

BR

( *1)

( *1)

P 4

32 B

PSW

G−W

10AETCS


2

2

1

IA16

7 D

+BM

LGLG

10AIG1NO. 2

1C14

( *2)

(* 2)

2 3

1 5

4

2 2

222

10ASTOP

2

2

1

1

2

1B2

1C6

DB3

DD5

4 C

STP

L

G−W

L

L

G−W

LG

LL

G−B

L

10ATAIL

1J7

G

A12

B22

15 D

ELS

G

S10

DC13

DC12

LG

LG

(*2) (*2)

(*3)

( *2)

( *2)

( *2)

( *2)

STO

P L

P C

TRL

Rel

ay

W

BR

BR

E 4(A), E 5(B), E 7(C), E 8(D)

NE− NE

2 1

GND

3

NE−

34G

A

R

A

E12

GGG

BR

( *1)

( *1)

( *1)

C 5

BR

8

BR

W−B

L−W

J 4(

A) ,

J 5

( B)

Sto

p La

mp

SW

Air

Fue

l Rat

io S

enso

r( B

ank

1 S

enso

r 1)


Cam

shaf

t P

ositi

onS

enso

r

JunctionConnector

CrankshaftPositionSensor

Pow

er S

teer

ing

Oil

Pre

ssur

e S

W

Hea

ted

Oxy

gen

Sen

sor

( Ban

k 1

Sen

sor

2)

Junc

tion

Con

nect

or

I 5BR

PA1 PA5 PA12

(*3)


104


IH1

5

IH1

2

4

MGND

L−WW−B

MPMP

D6

IB13

9

ID29ID211

G

L−W

1

G

6

W−B

PPMP

D31

ID210

3

GR

GR

ID212

2

BR

BR

ID24

4

L

E2

A28

5

THW

A32

Y−B

IF1

E 2

VPMP

D5

ID23

V−W

8

V−W

W−B

BR

L−W

L

IF1

I 7

IGT1

17 A

IGT1

P

3

IGF

2

12

5

2

IGF

3

LG−B

IGT4

A14

IGT4IGT3

15 A

IGT3

LG

3

IGF

22

IGF

3P−L

IGT2

A16

IGT2

4

W−R

W−R

LG−B

W−RLGW−R

P−L

W−RP

IGF1

A23

I 1 I 2 I 3 I 4

J12

13

L 1

MTRB VLVB VGND VOUTSGND VCC BR

BR

W−BBR

BR

E 4(A), E 5(B), E 7(C), E 8(D)

E1

A3

BR

BR

11

W−B W−B

BR

L

M

3

10 A

ALT

L

G 2

Gen

erat

or


Ignition Coil(No. 1)




JunctionConnector

Eng

ine

Coo

lant

Tem

p.

Sen

sor

Leak Detection Pump Assembly

I 5

M

Pressure Sensor

Can

iste

rC

lose

d V

alve

L BR

L BR

BR

BR

BR

1

2


105

IF1

1 IF1IF1IF16 3

4

A 8

AIP

VCE2

31

LBR

GR

22 B

AIP

2

L

VC

A18

1

M

M+VTA2VCVTA M−

G−B

VTA1

A20

G−W

VTA2

A19

P

M+

A5

L

M−

A4

(*1)

GE01

A8

6 5 4 2

E2

3

B

KNK1

A29

EF12 EF11

EKNK

A30

2 1

I 7

W( *1)

B W

W−B

BR

L L

13 IA1

LG−B

EPA

D20

LG−B

5

12 IA1

R−Y

VPA

D18

R−Y

6

11 IA1

R

VCPA

D26

R

4

7 IA1

R−B

EPA2

D21

R−B

2

8 IA1

GR−B

VPA2

D19

GR−B

3

9 IA1

L−W

VCP2

D27

L−W

1

A19

5 II1 IJ13

25 C

ACT

L

24 C

AC1G−W

L

A14

ACT

7

AC1

9

OUT

9

GSW2

22

G−W

II110

32 C

F/PS

RR

A21

V 8

IM15

20 C

ELS2

B−W

B−W

W−B

W−B

BR

T 1

K 1

W−B

L

E 4(A), E 5(B), E 7(C), E 8(D)

* 1 : Shielded

W−BW−B

BR

L

Accelerator Position Sensor

Air

Pre

ssur

eS

enso

r


Throttle Body Assembly

Airb

ag S

enso

rA

ssem

bly

Cen

ter

A/C Amplifier

Vol

tage

Inve

rter

Kno

ck C

ontr

olS

enso

r ( B

ank

1)

W−B

I 6

L L L

EPA VPA VCPA EPA2 VPA2 VCP2


106


E01

A7

W−B

E02

A6

W−B

E03

B4

W−B

E04

B7

W−B

ME01

B3

W−B

EC

D22

W−B

EH EG

TACH

C1

B−W

THWO

C14

GR−B

13

1

P−B

TC

C17

7 PE

6 PE PA18

EH IC

B

CANH

C33 34 C

CANL

W

7. 5AOBD

SG


2

CG

2

1

IA127

C30

W

Y−B

CANL CANH BAT

5 4

14 6 16

L−W

Y−B Y

Y

W−B

W−BBR

W−B

W−B

W−B

W−B

D 4

B−W

GR−B

J14 BR

E 4(A), E 5(B), E 7(C), E 8(D)

V−W

V−W

SPD

C8

W−B

W−B

W−B

PA17

TAC

9

B−W

B−W

Engine Control Module Data Link Connector 3

Junc

tion

Con

nect

or

1

IE

W−B

2 D1 D

2 E1 E

J 9(

D) ,

J10(

E) ,

J11(

F)

J13JunctionConnector

Junc

tion

Con

nect

or

2

F1

W−B

W−B

W−B

DA2

DB9

TC

13

P−B

P−BL−W

ST−Plug


107


7. 5AGAUGE

1J3

7. 5AECU−B

2

2

1

1C16

1K13

Tem

pC

ontr

ol

Tac

hC

ontr

ol

II19

BR

GR−B

B−W

B1 B16

A11 A18

Spe

edC

ontr

ol

IA136

B18

A12

10AIG1

1J9

IA

2

W−B

IH19 IH18

PF7

PA4

IG+

SP1

1

SE

2

SI

3

21 1

6 327917

BR

GR−B

B−W

W−B

R−Y

W

W R−Y

R−Y

B15A20

B16A6

B44A5

B45A19

RR−RL+ RR+RL−

B10

A18

FL+

B9

A4

FL−

B40

A3

FR+

B39

A17

FR−

Mal

func

tion

Indi

cato

r La

mp

G R L P

Y BR B O

Speed Sensor(Rear)

Speed Sensor(Front LH, RH)

S 1

( A) ,

(B

)

P

(w/ VSC)

(w/ VSC)

(w/o VSC)

(w/o VSC)

V 1

R

( A/T

)

R P

V

( M/T

)

( M/T

)

( M/T

)( M

/T)

J 1

( M/T

)

PC12

PD2

19

V−W

V−W

R−Y

( M/T

)

C 9

J 4(

A) ,

J 5(

B)

A17

B−W

B−W

Ski

d C

ontr

ol E

CU

with

Act

uato

r

Veh

icle

Spe

ed S

enso

r( C

ombi

natio

n M

eter

)

Com

bina

tion

Met

er

JunctionConnector

Junc

tion

Con

nect

or


108


The engine control system utilizes a microcomputer and maintains overall control of the engine, etc. An outline of enginecontrol is given here.

1. Input Signals(1) Engine coolant temp. signal system

The engine coolant temp. sensor detects the engine coolant temp. and has a built−in thermistor with a resistance whichvaries according to the engine coolant temp. Thus the engine coolant temp. is input as a control signal to TERMINALTHW of the engine control module.

(2) Intake air temp. signal systemThe intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as acontrol signal to TERMINAL THA of the engine control module.

(3) Power steering oil pressure signal systemPower steering oil pressure is detected by the power steering oil pressure SW and is input as a control signal toTERMINAL PSW of the engine control module.

(4) RPM signal systemCamshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor.Camshaft position is input as a control signal to TERMINAL G2 of the engine control module, and engine RPM is inputinto TERMINAL NE+.

(5) Throttle signal systemThe throttle position sensor detects the throttle valve opening angle, which is input as a control signal to TERMINALSVTA1 and VTA2 of the engine control module.

(6) Vehicle speed signal systemThe vehicle speed is detected by the ABS speed sensor and the signal is input to TERMINAL SPD of the engine controlmodule via the comb. meter and the skid control ECU with actuator. (A/T)The vehicle speed is detected by the vehicle speed sensor installed in the transaxle and the signal is input toTERMINAL SPD of the engine control module via the comb. meter. (M/T)

(7) NSW signal system (A/T)The Park/Neutral position SW detects whether the shift position is in neutral or not, and inputs a control signal toTERMINAL NSW of the engine control module.

(8) A/C SW signal systemThe operating voltage of the A/C SW is detected and is input as a control signal to TERMINAL AC1 of the engine controlmodule.

(9) Battery signal systemVoltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned to on,voltage for engine control module operation is applied via the EFI relay to TERMINAL +B of the engine control module.

(10) Intake air volume signal systemIntake air volume is detected by the mass air flow meter, and is input as a control signal to TERMINAL VG of the enginecontrol module.

(11) STA signal systemTo confirm that the engine is cranking, the voltage applied to the starter motor during cranking is detected and is input asa control signal to TERMINAL STA of the engine control module.

(12)Oxygen sensor signal systemThe oxygen density in the exhaust gases is detected and is input as a control signal into TERMINAL OX1B of theengine control module. To maintain stable detection performance by the oxygen sensor, a heater is used for warmingthe sensor. The heater is also controlled by the engine control module (HT1B).

(13)Engine knock signal systemEngine knocking is detected by the knock sensor and input as a control signal to TERMINAL KNK1 of the engine controlmodule.

(14)Electrical load signal systemWhen systems which cause a high electrical load such as the rear window defogger, taillight are turned on, a signal isinput to TERMINALS ELS and ELS2 as a control signal.

(15)Air fuel ratio signal circuitThe air fuel ratio is detected and input as a control signal into TERMINAL A1A+ of the engine control module.

System Outline


109

2. Control System∗ SFI system

The SFI system monitors the engine conditions through the signals, which are input from each sensor to the enginecontrol module. Based on this data and the program memorized in the engine control module, the most appropriate fuelinjection timing is decided and current is output to TERMINALS #10, #20, #30 and #40 of the engine control module,operating the injectors (to inject fuel). This is the system which finely controls the fuel injection in response to the drivingconditions, through the engine control module.

∗ ESA systemThe ESA system monitors the engine conditions using the signals, which are input to the engine control module from eachsensor. Based on this data and the program memorized in the engine control module, the most appropriate ignition timingis decided and current is output to TERMINALS IGT1, IGT2, IGT3 and IGT4 of the engine control module. This outputcontrols the ignition coil and igniter No. 1 , No. 2 , No. 3 and No. 4 to produce the most appropriate ignition timing for thedriving conditions.

∗ Knock control systemKnock control system controls the gate based on the engine rotation speed and detects knocking by the peak value of theknock sensor output during the gate open period, and then controls it to the most suitable ignition timing in proportion tothe driving condition.

∗ Evapoparge control systemThis system leads the vapor stuck to the canister to the serge tank in order not to agitate the air fuel by adjusting the fuelinjection volume.The signal at this time will be output from TERMINAL PRG of the engine control module to VSV (EVAP).

3. Diagnosis SystemWith the diagnosis system, when there is a malfunctioning in the engine control module signal system, the malfunctionsystem is recorded in the memory. The malfunctioning system can be found by reading the display (Code) of the malfunctionindicator lamp.

4. Fail−Safe SystemWhen a malfunction occurs in any system, if there is a possibility of engine trouble being caused by continued control basedon the signals from that system, the fail−safe system either controls the system by using the data (Standard values)recorded in the engine control module memory or else stops the engine.

EFI Relay5−3 : Closed with the ignition SW at ON position

E2 Engine Coolant Temp. Sensor1−2 : Approx. 15.0 kΩ (−20°C, −4°F)

: Approx. 2.45 kΩ (20°C, 68°F): Approx. 0.32 kΩ (80°C, 176°F): Approx. 0.14 kΩ (110°C, 230°F)

E4 (A), E5 (B), E7 (C), E8 (D) Engine Control ModuleBATT−E1 : Always 9.0−14.0 volts+BM−E1 : Always 9.0−14.0 volts

+B−E1 : 9.0−14.0 volts with the ignition SW at ON positionVC−E1 : 4.5−5.5 volts with the ignition SW at ON position

VTA2−E1 : 2.0−2.9 volts with the ignition SW on and throttle valve fully closed: 4.7−5.1 volts with the ignition SW on and throttle valve fully open

VTA1−E1 : 0.4−1.0 volts with the ignition SW on and throttle valve fully closed: 3.2−4.8 volts with the ignition SW on and throttle valve fully open

VPA−E1 : 0.3−0.9 volts with the ignition SW on and throttle valve fully closed: 3.2−4.8 volts with the ignition SW on and throttle valve fully open

VPA2−E1 : 1.8−2.7 volts with the ignition SW on and throttle valve fully closed: 4.7−5.1 volts with the ignition SW on and throttle valve fully open

THA−E1 : 0.5−3.4 volts with the idling, intake air temp. 0°C (32°F) −80°C (176°F)THW−E1 : 0.2−1.0 volts with the idling, engine coolant temp. 60°C (140°F) −120°C (248°F)STA−E1 : 6.0 volts or more with the engine cranking

W−E1 : 9.0−14.0 volts with the idling and malfunction indicator lamp offSPD−E1 : Pulse generation with the vehicle movingSTP−E1 : 7.5−14.0 volts with the brake pedal depressed

Service Hints


110


: Parts Location

Code See Page Code See Page Code See Page

A4 42 (2TR−FE) E8 D 44 J11 F 45

A6 A 42 (2TR−FE) F5 42 (2TR−FE) J12 45

A7 B 42 (2TR−FE) F6 42 (2TR−FE) J13 45

A8 42 (2TR−FE) F7 42 (2TR−FE) J14 45

A9 42 (2TR−FE) F8 42 (2TR−FE) K1 43 (2TR−FE)

A10 42 (2TR−FE)

F19

46 (*1)

L1

46 (*1)

A14 44 48 (*2) 48 (*2)

A19 44 49 (*3) 49 (*3)

A21 44 G2 42 (2TR−FE) M1 43 (2TR−FE)

C1 42 (2TR−FE) H3 43 (2TR−FE) P1 43 (2TR−FE)

C2 42 (2TR−FE) I1 43 (2TR−FE) P4 43 (2TR−FE)

C5 42 (2TR−FE) I2 43 (2TR−FE)S1

A 43 (2TR−FE)

C8 44 I3 43 (2TR−FE) B 43 (2TR−FE)

C9 44 I4 43 (2TR−FE) S10 45

D4 44 I7 45 T1 43 (2TR−FE)

D6 44 J1 45 V1 43 (2TR−FE)

E2 42 (2TR−FE) J4 A 45 V4 43 (2TR−FE)

E4 A 44 J5 B 45V8

47 (*1)

E5 B 44 J9 D 45 48 (*2)

E7 C 44 J10 E 45

: Relay Blocks

Code See Page Relay Blocks (Relay Block Location)

2 24 Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector

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

1B28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

1C

1H

29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I

1J

1K

2A 24 Engine Room J/B (Engine Compartment Left)

2B 24 Engine Wire and Engine Room J/B (Engine Compartment Left)

2C 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

DA34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)

DB

DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)

DD

PA36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)

PB

PC

36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PD

PE

PF

* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat


111

: Connector Joining Wire Harness and Wire Harness

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

EA1 54 (2TR−FE) Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)

EF1 54 (2TR−FE) Engine Wire and Sensor Wire (Left Side of Cylinder Block)

IA1 56 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

IB1 56 Frame Wire and Engine Room Main Wire (Left Kick Panel)

ID2 56 Frame Wire and Instrument Panel Wire (Left Kick Panel)

IF1 58 Engine Wire and Engine Wire (Behind the Glove Box)

IH1 58 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)

II1 58 Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)

IJ1 58 Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)

IM1 58 Floor No.3 Wire and Instrument Panel Wire (Under the Console Box)

: Ground Points

Code See Page Ground Points Location

EA 54 (2TR−FE) Front Right Fender

EB 54 (2TR−FE) Front Left Fender

EG54 (2TR−FE) Rear Side of Cylinder Block

EH

IA 56 Left Kick Panel

IC 56 Instrument Panel Brace RH

IE 56 Right Kick Panel

BD

60 (*1)

Near the Rear Differential62 (*2)

64 (*3)

: Splice Points

Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points

E354 (2TR−FE) Engine Room Main Wire

I5

58 Engine WireE5 I6

E954 (2TR−FE) Engine Wire

I7

E12

* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat

Documents

Engine Control for 2TR - · PDF file10/2/2008 · Engine Control for 2TR−FE The engine control system utilizes a microcomputer and maintains overall control of the engine, etc. An