2005 Toyota 4Runner Sport, 4.7 T, RWDFACTORY OEM SERVICE PROCEDURE

Terminals Of ECM: Notes

Fig 1: Identifying Terminals Of ECM
G02583800Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals is also indicated.

The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the STD Voltage column.

The illustration above can be used as a reference to identify the ECM terminal locations.

ECM TERMINALS DESCRIPTION AND VOLTAGE

Symbols (Terminals No.) Wiring Color Terminal Description Condition STD Voltage
BATT (E8-3) - E1 (E6-1) L-W-B Battery (for measuring the battery voltage and for the ECM memory) Always 9 to 14 V
+BM (E8-7)-E1 (E6-1) GR - W-B Power source of throttle motor Always 9 to 14 V
IGSW (E8-9) - E1 (E6-1) B-O - W-B Ignition switch Ignition switch ON 9 to 14 V
+B (E8-1)-E1 (E6-1) B-W-B Power source of ECM Ignition switch ON 9 to 14 V
+B2 (E8-2)-E1 (E6-1) B-W-B Power source of ECM Ignition switch ON 9 to 14 V
MREL (E8-8) - E1 (E6-1) W-G - W-B EFI relay Ignition switch ON 9 to 14 V
VC (E4-23) - E2 (E4-28) L-R - BR Power source for sensor (specific voltage) Ignition switch ON 4.5 to 5.5 V
VG (E4-30) - E2G (E4-29) W-R - B-W Mass air flow meter Idling, shift lever position P or N, A/C switch OFF 0.5 to 3.0 V
THA (E4-22) - E2 (E4-28) Y-B - BR Intake air temperature sensor Idling, Intake air temperature 20°C (68 °F) 0.5 to 3.4 V
THW (E4-21) - E2 (E4-28) R-L - BR Engine coolant temperature sensor Idling, Engine coolant temperature 80°C (176°F) 0.2 to 1.0 V
VTA1 (E4-20) - E2 (E4-28) Y-BR Throttle position sensor (for engine control) Ignition switch ON, throttle valve fully closed 0.5 to 1.2 V
VTA1 (E4-20) - E2 (E4-28) Y-BR Throttle position sensor (for engine control) Ignition switch ON, throttle valve fully open 3.2 to 4.8 V
VTA2 (E4-19) - E2 (E4-28) R-B - BR Throttle position sensor (for sensor malfunction detection) Ignition switch ON, throttle valve fully closed 2.1 to 3.1 V
VTA2 (E4-19) - E2 (E4-28) R-B-BR Throttle position sensor (for sensor malfunction detection) Ignition switch ON, throttle valve fully open 4.5 to 5.5 V
VPA (E8-18) - EPA (E8-20) W-R - LG-B Accelerator pedal position sensor (for engine control) Ignition switch ON, throttle valve fully closed 0.5 to 1.1 V
VPA (E8-18) - EPA (E8-20) W-R-LG-B Accelerator pedal position sensor (for engine control) Ignition switch ON, throttle valve fully open 2.6 to 4.5 V
VPA2 (E8-19) - EPA2 (E8-21) R-B - V-W Accelerator pedal position sensor (for sensor malfunction detection) Ignition switch ON, throttle valve fully closed 1.2 to 2.0 V
OC1+ (E6-17) - OC1- (E6-16) P-LG Camshaft timing oil control valve (OCV) Idling Pulse generation (See waveform 3)
OC2+ (E6-15) - OC2- (E6-14) R-W - Y-R Camshaft timing oil control valve (OCV) Idling Pulse generation (See waveform 3)
W1 + (E6-25) - VV1 - (E6-24) Y(1)-L(1) Variable valve timing (VVT) sensor (Bank 1) Idling Pulse generation (See waveform 4)
W2+ (E6-18) - W2- (E6-28) R-G Variable valve timing (VVT) sensor (Bank 2) Idling Pulse generation (See waveform 4)
M+ (E4-5)-E1 (E6-1) R(1) - W-B Throttle motor Idling Pulse generation (See waveform 7)
M- (E4-4)-E1 (E6-1) G(1) - W-B Throttle motor Idling Pulse generation (See waveform 8)
A1A+ (E5-22) - E1 (E6-1) Y(1) - W-B A/F sensor Ignition switch ON -
A1A- (E5-30) - E1 (E6-1) BR(1) - W-B A/F sensor Ignition switch ON -
A2A+ (E5-23) - E1 (E6-1) P(1) - W-B A/F sensor Ignition switch ON -
A2A- (E5-31)-E1 (E6-1) L(1) - W-B A/F sensor Ignition switch ON -
HA1A (E5-2)-E1 (E6-1) R-L-W-B A/F sensor heater Idling -
HA2A (E5-1)-E1 (E6-1) B-W - W-B A/F sensor heater Ignition switch ON -
VPA2 (E8-19) - EPA2 (E8-21) R-B - V-W Accelerator pedal position sensor (for sensor malfunction detection) Ignition switch ON, throttle valve fully open 3.4 to 5.3 V
VCPA (E8-26) - EPA (E8-20) B-Y - LG-B Power source of accelerator pedal position sensor (for VPA) Ignition switch ON 4.5 to 5.5 V
VCP2 (E8-27) - EPA2 (E8-21) W-L - V-W Power source of accelerator pedal position sensor (for VPA2) Ignition switch ON 4.5 to 5.5 V
OX1B (E4-18)-E1 (E6-1)
OX2B (E5-33) - E1 (E6-1)		 B(1) - W-B
W(1) - W-B		 Heated oxygen sensor Maintain engine speed at 2, 500 RPM for 2 minutes after warming up Pulse generation (See waveform 10)
HT1B (E4-1)-E1 (E6-1)
HT2B (E5-5) - E1 (E6-1)		 G-Y-W-B
P-W-B		 Heated oxygen sensor heater Idling Below 3.0 V
HT1B (E4-1)-E1 (E6-1) HT2B (E5-5) - E1 (E6-1) G-Y-W-B
P-W-B		 Heated oxygen sensor heater Ignition switch ON 9 to 14 V
#10 (E6-2)-E01 (E4-7) R-L-W-B Injector Ignition switch ON 9 to 14 V
#20 (E6-3) - E01 (E4-7) L-W-B
#30 (E6-4) - E01 (E4-7) W-W-B
#40 (E6-5) - E01 (E4-7) Y-W-B
#50 (E6-6) - E01 (E4-7) G-W-B
#60 (E6-7) - E01 (E4-7) R-W-B
#70 (E4-3) - E01 (E4-7) W-W-B
#80 (E4-2) - E01 (E4-7) BR - W-B
#10 (E6-2)-E01 (E4-7) R-L-W-B Injector Idling Pulse generation (See waveform 1)7)4-7)
#20 (E6-3) - E01 (E4-7) L-W-B
#30 (E6-4) - E01 (E4-7) W-W-B
#40 (E6-5) - E01 (E4-7) Y-W-B
#50 (E6-6) - E01 (E4-7) G-W-B
#60 (E6-7) - E01 (E4-7) R-W-B
#70 (E4-3) - E01 (E4-7) W-W-B
#80 (E4-2) - E01 (E4-7) BR - W-B
KNK1 (E5-29) - EKNK (E5-28) G(1)-R(1) Knock sensor Maintain engine speed at 4, 000 RPM after warming up Pulse generation (See waveform 2)
KNK2 (E5-21) - EKN2 (E5-20) W(1)-B(1) Knock sensor Maintain engine speed at 4, 000 RPM after warming up Pulse generation (See waveform 2)
G2+ (E6-19)-G2- (E6-29) B-W Camshaft position sensor Idling Pulse generation (See waveform 5)
NE+ (E6-21) - NE- (E6-20) L(1)-Y(1) Crankshaft position sensor Idling Pulse generation (See waveform 5)
PRG (E4-34) - E1 (E6-1) Y-R - W-B VSV for EVAP Ignition switch ON 9 to 14 V
SPD (E7-8)-E1 (E6-1) V-R-W-B Speed signal from combination meter Ignition switch ON, Rotate driving wheel slowly Pulse generation (See waveform 6)
FPR (E6-30) - E1 (E6-1) G-R-W-B Fuel pump relay Ignition switch ON 0 to 3.0 V
FC (E8-10)-E1 (E6-1) GR-B - W-B Fuel pump control Ignition switch ON 9 to 14 V
IGT1 (E4-8)-E1 (E6-1)
IGT2 (E4-15)-E1 (E6-1)
IGT3 (E4-11)-E1 (E6-1)
IGT4 (E4-10)-E1 (E6-1)
IGT5 (E4-13)-E1 (E6-1)
IGT6 (E4-12)-E1 (E6-1)
IGT7 (E4-14)-E1 (E6-1)
IGT8 (E4-9)-E1 (E6-1)		 LG - W-B
LG-B-W-B
L-W - W-B
L-Y-W-B
B-L-W-B
G-W-B
G-W - W-B
G-B - W-B		 Ignition coil with igniter (ignition signal) Idling Pulse generation (See waveform 9)
IGF1 (E4-24)-E1 (E6-1)
IGF2 (E4-25) - E1 (E6-1)		 R-Y - W-B
R-W - W-B		 Ignition coil with igniter (ignition confirmation signal) Ignition switch ON 4.5 to 5.5 V
IGF1 (E4-24)-E1 (E6-1)
IGF2 (E4-25) - E1 (E6-1)		 R-Y-W-B
R-W - W-B		 Ignition coil with igniter (ignition confirmation signal) Idling Pulse generation (See waveform 9)
STP (E8-15)-E1 (E6-1) G-Y - W-B Stop lamp switch Brake pedal depressed 7.5 to 14 V
STP (E8-15)-E1 (E6-1) G-Y - W-B Stop lamp switch Brake pedal released Below 1.5 V
ST1- (E8-16)-E1 (E6-1) R-L-W-B Stop lamp switch (opposite to STP terminal) Ignition switch ON, Brake pedal depressed Below 1.5 V
ST1- (E8-16)-E1 (E6-1) R-L-W-B Stop lamp switch (opposite to STP terminal) Ignition switch ON, Brake pedal released 7.5 to 14 V
STAR/NSW (E5-8) - E1 (E6-1) P-W-B Park/Neutral position switch Ignition switch ON, Shift lever position other than P and N 9 to 14 V
STAR/NSW (E5-8) - E1 (E6-1) P-W-B Park/Neutral position switch Ignition switch ON, Shift lever position in P, N Below 3.0 V
W (E7-30)-E1 (E6-1) R-B - W-B MIL Idling 9 to 14 V
W (E7-30)-E1 (E6-1) R-B-W-B MIL Ignition switch ON Below 3.0 V
ELS1 (E7-13)-E1 (E6-1) G-W-B Electric load Taillamp switch ON, Defogger switch ON 7.5 to 14 V
ELS2 (E7-12)-E1 (E6-1) Y-G - W-B Electric load Taillamp switch OFF, Defogger switch OFF 0 to 1.5 V
TACH (E7-1) - E1 (E6-1) B-W - W-B Engine speed Idling Pulse generation (See waveform 11)
TC (E8-23)-E1 (E6-1) P-L-W-B Terminal TC of DLC 3 Ignition switch ON 9 to 14 V
STA (E6-11)-E1 (E6-1) B-Y - W-B Starter signal Cranking 6 V or higher
STA (E6-11)-E1 (E6-1) B-Y - W-B Park/neutral position switch Shift lever position P or N, Ignition switch START 9 to 14 V
STSW (E6-12)-E1 (E6-1) L-Y - W-B STA No. 2 fuse Shift lever position P or N, Ignition switch START 9 to 14 V
VPMP (E8-5) - E1 (E6-1) R-G - W-B Canister closed valve Ignition switch ON 9 V to 14 V
MPMP (E8-6) - E1 (E6-1) O-W-B Leak detection pump Vacuum pump OFF 0 V to 3 V
MPMP (E8-6) - E1 (E6-1) O-W-B Leak detection pump Vacuum pump ON 9 V to 14 V
PPMP (E8-22) - E1 (E6-1) R-W-B Vapor pressure sensor Ignition switch ON 3 V to 3.6 V
AIV1 (E4-27)-E1 (E6-1) P-W-B VSV for air injection control (Bank 1) Ignition switch ON 9 to 14 V
AIV2 (E4-26) - E1 (E6-1) L-W-B VSV for air injection control (Bank 2) Ignition switch ON 9 to 14 V
AIRV (E8-4) - E1 (E6-1) Y-W-B AI driver (ASV control signal) Ignition switch ON 9 to 14 V
AIRP (E8-25) - E1 (E6-1) G-W-B AI driver (Air pump control signal) Ignition switch ON 9 to 14 V
AIP (E4-32) - E1 (E6-1) W-L - W-B Air pressure sensor Ignition switch ON 3 V to 3.6 V
(1) Shielded
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