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Terminals Of Ecu

Fig 1: Identifying Terminals Of ECU
G03372801Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
ECU TERMINALS CONDITION

Terminal No. Wiring color Condition STD voltage
C7-1 <==> Body ground SB <==> Body ground Constant Below 1 V
C7-2 <==> Body ground W <==> Body ground Beam indicator light OFF --> ON Below 1 V ((5)) 10 - 14 V --> Below 1 V ((6))
C7-3 °C7-1 W <==> SB Ignition switch ON and oil level warning light ON --> OFF Below 1 V --> 10 - 14 V
C7-5 °C7-1 W <==> SB Ignition switch ON and driver side seat belt unfastened °Fastened Below 1 V --> 10 - 14 V
C7-6 °C7-1 W <==> SB Ignition switch ON and ABS indicator light OFF --> ON Below 1 V --> 10 - 14 V
C7-8 °C7-22 W <==> W Ignition switch ON and fuel is EMPTY °FULL Below 1 V --> 4 - 5 V
C7-10 °C7-1 SB <==> SB Ignition switch ON and front fog light indicator light OFF --> ON Below 1 V --> 10 - 14 V
C7-11 °C7-1 W <==> SB Ignition switch ON Below 1 V --> 10 - 14 V
C7-12 °C7-1 W <==> SB Ignition switch ON and SRS warning light OFF --> ON Below 1 V --> 10 - 14 V
C7-13 °C7-1 SB <==> SB Turn R indicator light OFF °Flash Below 1 V --> 10 - 14 V
C7-15 °C7-1 W <==> SB Ignition switch ON and A/T 4 indicator light OFF --> ON Below 1 V --> 10 - 14 V
C7-16 °C7-1 W <==> SB Ignition switch ON and A/T L indicator light OFF --> ON Below 1 V --> 10 - 14 V
C7-18 °C7-1 W <==> SB Ignition switch OFF --> ACC Below 1 V --> 10 - 14 V
C7-19 °C7-1 W <==> SB Tail light switch OFF --> ON Below 1 V --> 10 - 14 V
C7-20 <==> Body ground W <==> Body ground Constant 10 - 14 V
C7-21 <==> Body ground W <==> Body ground Constant Below 1 V
C7-23 °C7-1 W <==> SB Ignition switch ON and CHARGE indicator light ON --> OFF Below 4 V --> 10 - 14 V
C7-24 ((2)) °C7-1 R-L <==> SB Ignition switch ON and brake fluid abnormal level --> normal level Below 1 V --> 10 - 14 V
C7-25 °C7-1 W <==> SB Ignition switch ON and CRUISE indicator light ON --> OFF Below 4V --> 10-14 V
C7-26 °C7-1 W <==> SB Ignition switch ON and oil pressure indicator light ON --> OFF Below 1 V --> 10 - 14 V
C7-28 °C7-1 W <==> SB Ignition switch ON 4 - 6 V
C7-30 °C7-1 SB <==> SB Turn L indicator light OFF °Flash Below 1 V --> 10 - 14 V
C7-31 °C7-1 W <==> SB Engine running Below 1 V --> 10 - 14 V
C7-32 °C7-1 W <==> SB Ignition switch ON and turn front wheel slowly Below 1 V --> 10 - 14 V
C7-33 °C7-1 W <==> SB Ignition switch ON and turn front wheel slowly Below 1 V --> 10 - 14 V
C7-34 °C7-1 W <==> SB Ignition switch ON and A/T R indicator light OFF --> ON Below 1 V --> 10 - 14 V
C7-35 °C7-1 W <==> SB Ignition switch ON and A/T 3 indicator light OFF --> ON Below 1 V --> 10 - 14 V
C7-36 °C7-1 W <==> SB Ignition switch ON and A/T N indicator light OFF --> ON Below 1 V --> 10 - 14 V
C7-37 °C7-1 W <==> SB Ignition switch ON and A/T P indicator light OFF --> ON Below 1 V --> 10 - 14 V
C7-38 °C7-1 W <==> SB Ignition switch ON --> START Below 1 V --> 10 - 14 V
C7-39 °C7-1 W <==> SB Ignition switch ON --> ON Below 1 V --> 10 - 14 V
C7-40 °C7-1 W <==> SB Ignition switch ON --> ON Below 1 V --> 10 - 14 V
08-1 °C7-1 G <==> SB Constant Below 1 V
C8-2 °C7-1 G-R <==> SB Ignition switch ON and check E/G warning light ON --> OFF Below 4 V --> 10 - 14 V
C8-3 °C7-1 W-G <==> SB Tail cancel switch OFF --> ON Below 1 V --> 4 - 6 V
C8-4 °C7-1 R-B <==> SB Driver side door open °Close Below 4V --> 10 - 14 V
C8-5 °C7-1 P-L <==> SB Washer level indicator light ON --> OFF Below 1 V --> 10 - 14 V
C8-7 ((5)) °C7-1 P <==> SB Constant Below 1 V ((3)) --> 10 - 14 V ((4))
C8-8 °C7-1 LG <==> SB Headlight leveling warning light ON --> OFF Below 1 V --> 10 - 14 V
C8-9 ((5)) °C7-1 R <==> SB HEAD Lamp indicator light OFF --> ON Below 1 <==> 10 - 14 V
C8-10((2)) °C7-1 L-W <==> SB Ignition switch ON and A/T P or N indicator light OFF --> ON Below 1 V --> 10 - 14 V
C8-11 °C7-1 R-L <==> SB BEAM indicator light OFF --> ON Below 1 V --> 10 - 14 V
C8-12 °C7-1 B-R <==> SB Ignition switch OFF --> ON Below 1 V --> 10 - 14 V
C8-13((7)) °C7-1 R-L <==> SB VSC warning light ON --> OFF Below 4 V --> 10 - 14 V
C8-14((7)) °C7-1 L <==> SB TRAC OFF indicator light ON --> OFF Below 4 V --> 10 - 14 V
C8-15 °C7-1 LG <==> SB Ignition switch OFF and buzzer sound --> no sound Below 1 V --> 10 - 14 V
C8-16 °C7-1 GR <==> SB Ignition switch ON and lamp failure indicator light ON --> OFF Below 1 V --> 10 - 14 V
C8-17 °C7-1 R-W ((7)), R-Y ((2)) <==> SB Ignition switch ON and parking brake switch ON --> OFF Below 1 V --> 10 - 14 V
C8-18 °C7-1 R <==> SB Ignition switch ON and RESET switch --> ON 2 - 3 V --> 4 - 6 V
Ignition switch ON and MODE switch --> ON 2 - 3 V --> 4 - 6 V
C8-19 °C7-1 GR-B <==> SB Ignition switch ACC or ON, tail switch ON and light control rheostat is most dark position --> brightest position Below 1 V --> 3.5 - 4.5 V
C8-20 ((7)) °C7-1 LG <==> SB Ignition switch ON and SLIP indicator light ON --> OFF Below 4 V --> 10 - 14 V
C8-21 °C7-1 L <==> SB Engine running Below 1 V --> 10 - 14 V
C8-22 °C7-1 LG-B <==> SB Ignition switch ON and A/T D indicator light OFF --> ON Below 1 V --> 10 - 14 V
C8-23 °C7-1 B-R <==> SB Ignition switch ON and A/T 2 indicator light OFF --> ON Below 1 <==> 10 - 14 V
C8-24 °C7-1 W-G <==> SB Ignition switch ACC or ON, tail light switch ON and light control rheostat is brightest position --> most dark position Below 1 V --> 10 - 14 V
(1) Reference: Using oscilloscope:

(2) w/o VSC

(3) U.S.A.

(4) Canada

(5) w/DRL

(6) w/o DRL

(7) w/VSC
ITEM CONTENTS

Item Contents
Tool setting 10V/DIV, 20ms/DV
Vehicle condition Engine idle speed
Fig 2: ECM Oscilloscope Graph
G03372802Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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