Celica_ECM_Pinout

8/8/2019 Celica_ECM_Pinout

1/27

First Letter Indicates Main Wire Color, Second Letter is Stripe Color.

B Black

L Blue

R Red

P Pink

G Green

W WhiteV Violet

O Orange

Y Yellow

BR Brown

SB Sky Blue

LG Light Green

GR Gray


2/27

Year

Connector E5 (D) E4 (C)

Pin Color Label Notes Color Label Notes Color Label

1 R #10 Injector #1 Ground Control Y-G EVG MAFS Signal Wire B OD1 OD Co

2 R-L #20 Injector #2 Ground Control R VC +5v to TPS & EVAP VPS R-B R R sign

3 R-W #30 Injector #3 Ground Control Y-R HT1A Front O2 Heater Circuit Ground L-W CF Rly Cn

4 R-B #40 Injector #4 Ground Control G-O EVP1 Control ground EVAP purge VSV L-Y FAN Rly Cn

5 Y-G SLT- SLT solenoid wire P-B TC TC com

6 Y-R SLT+ SLT solenoid wire L-B OVL- VVL OCV Control Wire G-W STP Stop L

7 G SL1+ SL solenoid wire L-W OVL+ VVL OCV Control Wire

8 BR-Y SL2 SL2 solenoid wire P-L N N signal from gear selector P F/PS GSW2

9 V SL1- SL solenoid wire Y-B L L signal from gear selector R-L VSV VSV C

10 R-B IGT1 Igniter 1 Fire Signal Y RL Alternator Load Signal Wire LG-R MPX1 Multipl

11 R-W IGT2 Igniter 2 Fire Signal G-W VG +5v to MAFS L STA 12v sta

12 G-R IGT3 Igniter 3 Fire Signal B OX1A Front O2 Signal Wire W-B EC Groun

13 R-Y IGT4 Igniter 4 Fire Signal GR-L THO Trans fluid temp sensor

14 P-B NC+ O/D Direct Clutch Speed Sensor G THW Coolant Temp. Sensor B-W CCE D sign

15 B NT- VSS (Electr. Controled Trans) L G2 Cam Position Sensor Signal

16 W-L NT+ VSS (Electr. Controled Trans) O NE+ Crank Position Sensor Signal Y-B HT1B Rear O

17 V-W CCV Control Ground EVAP CCV VSV BR E1 ECU shielding & sensor ground

18 B-W RSO IAC Valve Control Wire BR E2 Sensor Ground O PRE From A19 P-L DSL DSL solenoid wire L-Y 2 2 signal from gear selector BR-Y ODLP O/D la

20 O SL2- SL2 solenoid wire P P P signal from gear selector

21 W-B E01 Ground to ED ground point GR OSW Oil Pressure Switch (VVTL) L-B MREL Contro

22 Y-B MOPS Oil Pressure Switch L-R THA MAFS (air temp signal) W-R SPD Speed

23 W OCV- VVT OCV B-W VTA TPS Signal G-O TBP Contro

24 G-O OCV+ VVT OCV W NE- Crank & Cam Sensor Ground L-W D D sign

25 B-Y IGF Igniter Fire Confirmation Signal W OX1B Rear O

26 G-W NC- O/D Direct Clutch Speed Sensor

27 W* KNK1 Knock Sensor* BR-W TACH Output

28 P* PS Pwr. St. Oil Pres. SW G LCKI A/C M

29 Y S4 S4 solenoid wire

30

31 W-B E02 Ground to ED ground point

* On 2002 wire harness, KNK1 is a black wire on Connector D/E5, pin 27. EKNK is a white wire on pin 28, displacing PS (pink wire

= Related to cruise control system. Does not cross into ECU harness, additional retrofit info needed.

= Related to EVAP system. Cross directly.

= Automatic Transmission only.

= Related to non-essential systems. Cross dir


3/27


4/27

Year

Connector E10 (G) E11 (H)


1 L-R #10 Injector #1 Ground Control W EKNK Knock Sensor Ground BR E1

2 L-O #20 Injector #2 Ground Control B KNK1 Knock Sensor W M-

3 L-B #30 Injector #3 Ground Control B M+

4 L #40 Injector #4 Ground Control Y-R HT1A Front O2 Heater Circuit Ground W-R ME01

5 L-W CF Rly Cntrl Gnd For Fan Rly #3

6 W-B E02 Ground to ED ground point Y-G HT1B

7 W-B E01 Ground to ED ground point W-G E03

8 R-G IGT1 Igniter 1 Fire Signal GR OSW

9 GR-R IGT2 Igniter 2 Fire Signal L STA 12v starter signal (during crank)

10 G-R IGT3 Igniter 3 Fire Signal P PS

11 R-Y IGT4 Igniter 4 Fire Signal P-L DSL DSL solenoid wire G-Y EVP1

12 V-W CCV

13 Y S4 S4 solenoid wire L-W OVL+

14 L-Y FAN Rly Cntrl Gnd For Fan Rly #1 L-B OVL-

15 R-L VSV VSV Cntrl Gnd for ACIS VSV W OCV-

16 Y-G SLT- SLT solenoid wire O SL2- SL2 solenoid wire G-O OCV+

17 Y-L SLT+ SLT solenoid wire BR-Y SL2 SL2 solenoid wire GE01

18 R-B VC +5v to TPS & EVAP VPS V SL1- SL solenoid wire19 G THW Coolant Temp. Sensor G-R SL1+ SL solenoid wire

20 Y-R THA MAFS (air temp signal)

21 B-W VTA TPS Signal #1 Y RL

22 Y-B MOPS

23 B OX1A Front O2 Signal Wire G LCKI

24 B-Y IGF Igniter Fire Confirmation Signal G-W VG +5v to MAFS

25

26 P-B NC+ O/D Direct Clutch Speed Sensor

27 O NE+ Crank Position Sensor Signal W-L NT+ VSS (Electr. Controled Trans) L G2

28 BR E2 Sensor Ground

29 R OX1B Rear O2 Signal Wire

30 GR-L THO Trans fluid temp sensor W-B EC

31 B-L VTA2 TPS Signal #2 (Idle Control)

32 Y-G EVG MAFS Signal Wire

33

34 W NE- Crank & Cam Sensor Ground G-O NC- O/D Direct Clutch Speed Sensor

35 B-R NT- VSS (Electr. Controled Trans)

* The D wire serves different purposes on M/T and A/T cars


= Specific to 2003-2005 ECU. Not used in cable throttle conversion.

= Related to EVAP system.

= Non-essential systems.



5/27


6/27

2003

E12 (I) E8 (E)

Notes Color Label Notes Color Label

ECU shielding & sensor ground O HP From A/C Dual Pressure SW B-R B+

DBW Related Y-O ACMG Gnd cntrl for A/C mag clutch rly

DBW Related W-L BATT

Ground G-O TBP

BR-W TACH

Rear O2 Heater Circuit Ground W-R +BM +12v from 10A ETCS fuse P P

E03 Ground circuit - to EC Ground BR-Y ODLP O/D lamp control ground P-L N

Oil Pressure Switch (VVTL) Y-B L L signal from gear selector GR MREL

L-O 2 2 signal from gear selector B-O IGSW

Power Steer. Oil Pres. Sw. L-W D* D signal from gear selector G-R FC

Control ground EVAP purge VSV R-B R R signal from gear selector R-B W

Control Ground EVAP CCV VSV R-Y ST1- Brake Cancel Cruise Cntrl.

VVL OCV Control Wire Y-G PI To Cruise Control Light

VVL OCV Control Wire P-G F/PS

VVT OCV

VVT OCV BR-R ODMS

DBW Related W-R SPD Speed signal from combo meter

LG-R MXP1 Multiplex Communications Wire 1 W SILG-W STP Stop Light Switch signal G WFSE

P-B TC

Alternator Load Signal Wire P-L SFTD Shift Down switch input L-B PTNK

Oil Pressure Switch L-R SFTU Shift Up switch input L-Y VPA

A/C MG/C Lock Sensor Signal L-O VPA2

W-G CCS From Cruise Cntrl . Sw.

L-W VCPA

Cam Position Sensor Signal L VCP2

L-R EPA

G-O MXP2 Multiplex Communications Wire 2 LG-R EPA2

Ground (EB on left front fender)


7/27


8/27

E9 (F)

Notes

+12v from C/OPN rly & 7.5A EFI #1 fuse

Power from EFI Relay

Control ground EVAP bypass VSV

Output to tachometer

P signal from gear selector

N signal from gear selector

Control ground EFI mail relay

12V Ignition source signal

(Fuel Cut) Circ Open Rly Cntrl Gnd

Check Engine Light control ground

GSW2 wire to Ctr A/B Sens Assy

Overdrive Main Switch

SIL com wire to DLC3 Diag CnctrFrom Data Link Connector 3

TC com wire to DLC3 Diag cnctr

EVAP Vapor Pres Sens Signal

Electric Pedal Assembly







9/27


10/27

Year

Connector E10 (G) E11 (H)


1 L-R #10 Injector #1 Ground Control W EKNK Knock Sensor Ground BR E1

2 L-O #20 Injector #2 Ground Control B KNK1 Knock Sensor W M-

3 L-B #30 Injector #3 Ground Control GR-R AIRP Trigger to Air Pump Rly. B M+

4 L #40 Injector #4 Ground Control Y-R HT1A Front O2 Heater Circuit Ground W-R ME01

5 L-W CF Rly Cntrl Gnd For Fan Rly #3

6 W-B E02 Ground to ED ground point Y-G HT1B

7 W-B E01 Ground to ED ground point W-G E03

8 R-G IGT1 Igniter 1 Fire Signal GR OSW

9 GR-R IGT2 Igniter 2 Fire Signal L STA 12v starter signal (during crank)

10 G-R IGT3 Igniter 3 Fire Signal P PS

11 R-Y IGT4 Igniter 4 Fire Signal P-L DSL DSL solenoid wire G-Y EVP

12 V-W CCV

13 Y S4 S4 solenoid wire L-B OCVL-

14 L-Y FAN Rly Cntrl Gnd For Fan Rly #1 L-W OCVL+

15 R-L ACLV VSV Cntrl Gnd for ACIS VSV W OCV-

16 Y-G SLT- SLT solenoid wire O SL2- SL2 solenoid wire G-O OCV+

17 Y-L SLT+ SLT solenoid wire BR-Y SL2+ SL2 solenoid wire GE01

18 R-B VC +5v to TPS & EVAP VPS V SL1- SL solenoid wire19 G THW Coolant Temp. Sensor G-R SL1+ SL solenoid wire

20 Y-R THA MAFS (air temp signal)

21 B-W VTA TPS Signal #1 Y RL

22 Y-B MOPS

23 B OX1A Front O2 Signal Wire G LCKI

24 B-Y IGF Igniter Fire Confirmation Signal G-W VG +5v to MAFS

25

26 P-B NC+ O/D Direct Clutch Speed Sensor

27 O NE+ Crank Position Sensor Signal W-L NT+ VSS (Electr. Controled Trans) L G22+

28 BR E2 Ground?

29 LG AIP Air Pump Pres. Sensor R OX1B Rear O2 Signal Wire

30 GR-L THO Trans fluid temp sensor W-B EC

31 B-L VTA2 TPS Signal #2 (Idle Control)

32 Y-G EVG MAFS Signal Wire

33 GR AIRV V8 VSV (Air Pump)

34 W NE- Crank & Cam Sensor Ground G-O NC- O/D Direct Clutch Speed Sensor

35 B-R NT- VSS (Electr. Controled Trans)

* The D wire serves different purposes on M/T and A/T cars


= Specific to 2003-2005 ECU. Not used in cable throttle conversion.

= Related to EVAP system.

= Non-essential systems.



11/27


12/27

2004-2005

E12 (I) E8 (E)

Notes Color Label Notes Color Label

ECU shielding & sensor ground O HP From A/C Dual Pressure SW B-R B+

DBW Related Y-O ACMG Gnd cntrl for A/C mag clutch rly

DBW Related W-L BATT

Ground G-O TBP

BR-W TACH

Rear O2 Heater Circuit Ground W-R +BM Battery +12v Non-Switched P P

E03 Ground circuit - to EC Ground BR-Y ODLP O/D lamp control ground P-L N

Oil Pressure Switch (VVTL) Y-B L L signal from gear selector GR MREL

L-O 2 2 signal from gear selector B-O IGSW

Power Steer. Oil Pres. Sw. L-W D* D signal from gear selector G-R FC

Control ground EVAP purge VSV R-B R R signal from gear selector R-B W

Control Ground EVAP CCV VSV R-Y ST1- Brake Cancel Cruise Cntrl.

VVL OCV Control Wire Y-G PI To Cruise Control Light

VVL OCV Control Wire P-G F/PS

VVT OCV

VVT OCV BR-R ODMS

DBW Related W-R SPD Speed signal from combo meter

LG-R MXP1 Multiplex Communications Wire 1 W SILG-W STP Stop Light Switch signal G WFSE

P-B TC

Alternator Load Signal Wire P-L SFTD Shift Down switch input L-B PTNK

Oil Pressure Switch L-R SFTU Shift Up switch input L-Y VPA

A/C MG/C Lock Sensor Signal L-O VPA2

W-G CCS From Cruise Cntrl . Sw.

L-W VCPA

Cam Position Sensor Signal L VCP2

L-R EPA

G-O MXP2 Multiplex Communications Wire 2 LG-R EPA2

Ground (EB on left front fender)


13/27


14/27

E9 (F)

Notes

+12v from C/OPN rly & 7.5A EFI #1 fuse

Power from EFI Relay

Control ground EVAP bypass VSV

Output to tachometer

P signal from gear selector

N signal from gear selector

Control ground EFI mail relay


(Fuel Cut) Circ Open Rly Cntrl Gnd


GSW2 wire to Ctr A/B Sens Assy

Overdrive Main Switch

SIL com wire to DLC3 Diag CnctrFrom Data Link Connector 3

TC com wire to DLC3 Diag cnctr

EVAP Vapor Pres Sens Signal








15/27


16/27

Destination Source

2000-2001 connectors 2003 Connectors 2004-2005 Connectors

Connector Pin Connector Pin Color Connector Pin Color Function

E2 (A)

1 E9 (F) 3 W-L E9 (F) 3 W-L BATT

2

3 E9 (F) 10 G-R E9 (F) 10 G-R FC

4 E9 (F) 21 L-B E9 (F) 21 L-B PTNK

5 E9 (F) 16 BR-R E9 (F) 16 BR-R ODMS

6 E8 (E) 29 G-O E8 (E) 29 G-O MPX2

7 E12 (I) 7 W-G E12 (E) 7 W-G E03

8 E9 (F) 9 B-O E9 (F) 9 B-O IGSW

9 E8 (E) 22 P-L E8 (E) 22 P-L SFTU

10 IDLO

11 E9 (F) 18 W E9 (F) 18 W SIL

12 E8 (E) 2 Y-O E8 (E) 2 Y-O ACMG

13

14

15 E9 (F) 11 R-B E9 (F) 11 R-B W

16 E9 (F) 1 B-R E9 (F) 1 B-R +B

17 E8 (E) 21 L-R E8 (E) 21 L-R SFTD

1819

20

21

22

E3 (B)

1 OD1

2 E8 (E) 11 R-B E8 (E) 11 R-B R

3 E10 (G) 5 L-W E10 (G) 5 L-W CF

4 E10 (G) 14 L-Y E10 (G) 14 L-Y FAN

5 E9 (F) 20 P-B E9 (F) 20 P-B TC

6 E8 (E) 19 G-W E8 (E) 19 G-W STP

7

8 E9 (F) 14 P-G E9 (F) 14 P-G F/PS

9 E10 (G) 15 R-L E10 (G) 15 R-L VSV

10 E8 (E) 18 LG-R E8 (E) 18 LG-R MXP1

11 E11 (H) 9 L E11 (H) 9 L STA

12 E12 (I) 30 W-B E12 (I) 30 W-B EC

13

14 CCE

15

16 E12 (I) 6 Y-G E12 (I) 6 Y-G HT1B

17

18 E8 (E) 1 O E8 (E) 1 O PRE/HP

19 E8 (E) 7 BR-Y E8 (E) 7 BR-Y ODLP

20

21 E9 (F) 8 GR E9 (F) 8 GR MREL

22 E8 (E) 17 W-R E8 (E) 17 W-R SPD

23 E9 (F) 4 G-O E9 (F) 4 G-O TBP

24 E8 (E) 10 L-W E8 (E) 10 L-W D

25 E11 (H) 29 R E11 (H) 29 R OX1B

26

27 E9 (F) 5 BR-W E9 (F) 5 BR-W TACH

28 E12 (I) 23 G E12 (I) 23 G LCKI

1 E11 (H) 32 Y-G E11 (H) 32 Y-G EVG

2 E10 (G) 18 R-B E10 (G) 18 R-B VC


17/27

E4 (C)

3 E11 (H) 4 Y-R E11 (H) 4 Y-R HT1A

4 E12 (I) 11 G-Y E12 (I) 11 G-Y EVP1

5

6 E12 (I) 14 L-B E12 (I) 13 L-B OVL-

7 E12(I) 13 L-W E12 (I) 14 L-W OVL+

8 E9 (F) 7 P-L E9 (F) 7 P-L N

9 E8 (E) 8 Y-B E8 (E) 8 Y-B L

10 E12 (I) 21 Y E12 (I) 21 Y RL

11 E11 (H) 24 G-W E11 (H) 24 G-W VG

12 E11 (H) 23 B E11 (H) 23 B OX1A

13 E10 (G) 30 GR-L E10 (G) 30 GR-L THO

14 E10 (G) 19 G E10 (G) 19 G THW

15 E12 (I) 27 L E12 (I) 27 L G2

16 E10 (G) 27 O E10 (G) 27 O NE+

17 E12 (I) 1 BR E12 (I) 1 BR E1

18 E10 (G) 28 BR E10 (G) 28 BR E2

19 E8 (E) 9 L-O E8 (E) 9 L-O 2

20 E9 (F) 6 P E9 (F) 6 P P

21 E12 (I) 8 GR E12 (I) 8 GR OSW

22 E10 (G) 20 Y-R E10 (G) 20 Y-R THA

23 E10 (G) 21 B-W E10 (G) 21 B-W VTA24 E10 (G) 34 W E10 (G) 34 W NE-

E5 (D)

1 E10 (G) 1 L-R E10 (G) 1 L-R #10

2 E10 (G) 2 L-O E10 (G) 2 L-O #20

3 E10 (G) 3 L-B E10 (G) 3 L-B #30

4 E10 (G) 4 L E10 (G) 4 L #40

5 E10 (G) 16 Y-G E10 (G) 16 Y-G SLT-

6 E10 (G) 17 Y-L E10 (G) 17 Y-L SLT+

7 E11 (H) 19 G-R E11 (H) 19 G-R SL1+

8 E11 (H) 17 BR-Y E11 (H) 17 BR-Y SL2

9 E11 (H) 18 V E11 (H) 18 V SL1-

10 E10 (G) 8 R-G E10 (G) 8 R-G IGT1

11 E10 (G) 9 GR-R E10 (G) 9 GR-R IGT2

12 E10 (G) 10 G-R E10 (G) 10 G-R IGT3

13 E10 (G) 11 R-Y E10 (G) 11 R-Y IGT4

14 E11 (H) 26 P-B E11 (H) 26 P-B NC+

15 E11 (H) 35 B-R E11 (H) 35 B-R NT-

16 E11 (H) 27 W-L E11 (H) 27 W-L NT+

17 E12 (I) 12 V-W E12 (I) 12 V-W CCV

E10 (G) 31 B-L E10 (G) 31 B-L RSO

19 E11 (H) 11 P-L E11 (H) 11 P-L DSL

20 E11 (H) 16 O E11 (H) 16 O SL2-

21 E10 (G) 7 W-B E10 (G) 7 W-B E01

22 E12 (I) 22 Y-B E12 (I) 22 Y-B MOPS

23 E12 (I) 15 W-B E12 (I) 15 W-B OCV-

24 E12 (I) 16 G-O E12 (I) 16 G-O OCV+

25 E10 (G) 24 B-Y E10 (G) 24 B-Y IGF

26 E11 (H) 34 G-O E11 (H) 34 G-O NC-

27 E11 (H) 2 B E11 (H) 2 B KNK1

28 E12 (I) 10 P E12 (I) 10 P PS

29 E11 (H) 13 Y E11 (H) 13 Y S4

30

31 E10 (G) 6 W-B E10 (G) 6 W-B E02

Notes

*1 See IAC tab. This wire is retrofitted from MAFS connector on 2003-05 harness

18*1


18/27

Fields highlighted in Orange denote circuits used for Automatic Transmission only

Fields highlighted in Yellow denote circuits used for EVAP System

Fields highlighted in Aqua denote circuits used for Cruise Control system that will not cross into the 2

Fields highlighted in Green denote additional non-essential systems such as air conditioning, intake fl


19/27

Description

Power from EFI relay

(Fuel Cut) Circuit Opening Relay Control Ground

EVAP Vapor Pressure Sensor Signal wire

A/T ONLY - Overdrive Main Switch

Multiplex Communications Wire 2

E03 Ground circuit - connects to EC Ground


A/T ONLY - Shift Up Switch Input

IDL communication wire to Cruise Control ECU

SIL communications wire to DLC3 Diagnostic Connector

Ground control for A/C magnetic clutch relay


Power feed from C/OPN relay and 7.5A EFI No. 1 fuse

A/T ONLY - Shift Down Switch Input

OD Communication wire to Cruise Control ECU

A/T ONLY - From Back-Up Light SW (ParkNeutral Pos. switch)

Relay Control Ground For Fan Relay No. 3

Relay Control Ground For Fan Relay No. 1

TC communications wire to DLC3 Diagnostic connector

Stop Light Switch signal

GSW2 wire to Center Airbag Sensor assembly

VSV Control Ground for ACIS VSV (intake door flapper)

Multiplex Communications Wire 1

12V Starter signal (during crank position)

EC Ground Circuit to EB ground on left front fender

A/T ONLY - D signal to Cruise Control ECU

Heater Control Ground for B1 S2 Secondary (post Cat) Oxygen sensor

From A/C Dual Pressure Switch

A/T ONLY - O/D light ground control

Control ground for EFI main relay

Vehicle Speed Signal In from Combo Meter

VSV control ground for EVAP bypass VSV (pressure switching VSV)

A/T ONLY - D signal from PRNDL Switch

Oxygen Sensor Signal Wire from B1 S2 Secondary (post cat) Oxygen Sensor

Tach signal Out

Signal from A/C magnetic Clutch lock sensor

E2G signal wire from Mass Air Flow Meter

5 Volt VC (Voltage Constant) to Throttle Position Sensor & EVAP Vapor Pressure Sensor


20/27

Heater Control Ground for B1 S1 Primary (pre cat) Oxygen sensor

VSV control ground for EVAP purge VSV

Oil Control Valve control wire for Lift

Oil Control Valve control wire for Lift

A/T ONLY - N signal from PRNDL Switch

A/T ONLY - L signal from PRNDL Switch

Load signal wire from alternator

VG signal wire from Mass Air Flow Meter

Oxygen Sensor Signal Wire from B1 S1 Primary (pre cat) Oxygen Sensor

A/T ONLY - Transmission Fluid Temperature Sensor

Coolant Temp. Sensor

Camshaft Position Sensor Signal wire

Crankshaft Position Sensor Signal wire

E1 ECU, Shielding & Sensor Ground (Hooked to ED Ground)

E2 Sensor Ground

A/T ONLY - 2 signal from PRNDL Switch

A/T ONLY - P signal from PRNDL Switch

Oil Pressure Switch for Variable Lift (VVTL) (Normally closed - pressure opens)

Air temp wire from Mass Air Flow Meter

Throttle Position Sensor outputCrankshaft & Camshaft Position Sensor Ground

#1 Injector Ground control wire




A/T ONLY - SLT Solenoid wire

A/T ONLY - SLT Solenoid wire

A/T ONLY - SL Solenoid wire

A/T ONLY - SL2 Solenoid wire

A/T ONLY - SL Solenoid wire

Igniter 1 fire signal




A/T ONLY - O/D Direct Clutch Speed Sensor Wire

A/T ONLY - Vehicle Speed Sensor Wire

A/T ONLY - Vehicle Speed Sensor Wire

VSV Control Ground for EVAP CCV VSV

Control wire to IAC (Idle air control)

A/T ONLY - DSL Solenoid Wire

A/T ONLY - SL2 Solenoid wire

E01 Ground circuit - connects to ED Ground

Main Oil Pressure Switch (Normally Open - pressure closes)

Oil Control Valve control wire for VVTi

Oil Control Valve control wire for VVTi

Igniter Fire confirmation signal wire

A/T ONLY - O/D Direct Clutch Speed Sensor Wire

Knock Sensor Signal Wire

Power Steering Pressure Switch (Normally open - pressure closes)

A/T ONLY - S4 Solenoid Wire

E02 Ground circuit - connects to ED Ground


21/27

03-05 harness

pper door and OBD-II diagnostics


22/27

Retrofit TPS plug from 2000-02 harness into 2003-05 harness

Destination Source

2000-2002 Connectors 2003-2005 Connectors

Connector Pin Color Connector Pin Color Function

T1

1 BR T1 3 BR Ground

2 R T1 5 R-B Power

3 B-W T1 6 B-W Signal

Note: T1 connector on 2000-02 is different that on 2003-05


23/27

Description

Reuse E2 ground wire on TPS connector.

Reuse VC power wire on TPS connector.

Reuse VTA signal wire on TPS coneector.


24/27

Retrofit IAC plug from 2000-02 harness into 2003-05 harnessDestination Source

2000-2002 Connectors 2003-2005 Connectors


I1

1 B-W T1 4 B-L Signal

2 B-R M1 1 B-R Power

3 W-B ED N/A N/A Ground

Note: T1 connector on 2000-02 is different that on 2003-05


25/27

Description

Reuse VTA2 wire on TPS connector.

Power to IAC. Splice from power to MAFS, will have to run wire.

Attach to ground point ED, cylinder head cover LH.


26/27

Retrofit cruise control from 2000-02 into 2003-05 car

Destination Source

2000-2002 Cruise Control ECU 2003-2005 Connectors


C18

1

2 G-W STP-3 B-Y D

4 Y-B PI

5 P-B TC

6 Y-B ECT

7 R-W MC

8 G-B L

9 B-O B

10 W-B CCS

11

12 W-R SPD

13 L-W IDL

14 B OD

15 R-L MO

16 W-B GND

Destination Source

2000-2002 Cruise Control Actuator 2003-2005 Connectors


C5

1 R-L MO

2 R-W MC

3 R-Y L

4 W-B GND


27/27

Description

A/T ONLY

Description

Celica_ECM_Pinout

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