2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS OF ECM; 2007 MY LX470 [08/2006

Last Modified: 7-3-2017	6.8:8.0.40	Doc ID: RM000000SXP00OX
Model Year Start: 2007	Model: LX470	Prod Date Range: [08/2006 - ]
Title: 2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS OF ECM; 2007 MY LX470 [08/2006 - ]

TERMINALS OF ECM

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 are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
BATT (E10-3) - E1 (E6-1)	B-R - BR	Battery (for measuring the battery voltage and for the ECM memory)	Always	9 to 14 V
+BM (E10-7) - E1 (E6-1)	Y-B - BR	Power source of throttle actuator	Always	9 to 14 V
IGSW (E10-9) - E1 (E6-1)	B-R - BR	Ignition switch	Ignition switch ON	9 to 14 V
+B (E10-1) - E1 (E6-1)	B-Y - BR	Power source of ECM	Ignition switch ON	9 to 14 V
+B2 (E10-2) - E1 (E6-1)	B-Y - BR	Power source of ECM	Ignition switch ON	9 to 14 V
MREL (E10-8) - E1 (E6-1)	B-W - BR	EFI relay	Ignition switch ON	9 to 14 V
VC (E8-23) - E2 (E8-28)	L-R - BR	Power source of sensor (specific voltage)	Ignition switch ON	4.5 to 5.5 V
VG (E8-30) - E2G (E8-29)	L-Y - G-W	Mass air flow meter	Idling, shift lever position P or N, A/C switch OFF	0.5 to 3.0 V
THA (E8-22) - E2 (E8-28)	Y-B - BR	Intake air temperature sensor	Idling, intake air temperature 20°C (68°F)	0.5 to 3.4 V
THW (E8-21) - E2 (E8-28)	G-B - BR	Engine coolant temperature sensor	Idling, engine coolant temperature 80°C (176°F)	0.2 to 1.0 V
VTA1 (E8-20) - E2 (E8-28)	R-Y - BR	Throttle position sensor (for engine control)	Ignition switch ON, throttle valve fully closed	0.5 to 1.2 V
VTA1 (E8-20) - E2 (E8-28)	R-Y - BR	Throttle position sensor (for engine control)	Ignition switch ON, throttle valve fully open	3.2 to 4.8 V
VTA2 (E8-19) - E2 (E8-28)	Y-B - BR	Throttle position sensor (for sensor malfunction detection)	Ignition switch ON, throttle valve fully closed	2.1 to 3.1 V
VTA2 (E8-19) - E2 (E8-28)	Y-B - BR	Throttle position sensor (for sensor malfunction detection)	Ignition switch ON, throttle valve fully open	4.5 to 5.5 V
VPA (E10-18) - EPA (E10-20)	R - BR-W	Accelerator pedal position sensor (for engine control)	Ignition switch ON, accelerator pedal fully released	0.5 to 1.1 V
VPA (E10-18) - EPA (E10-20)	R - BR-W	Accelerator pedal position sensor (for engine control)	Ignition switch ON, accelerator pedal fully depressed	2.6 to 4.5 V
VPA2 (E10-19) - EPA2 (E10-21)	R-B - W-R	Accelerator pedal position sensor (for sensor malfunction detection)	Ignition switch ON, accelerator pedal fully released	1.2 to 2.0 V
VPA2 (E10-19) - EPA2 (E10-21)	R-B - W-R	Accelerator pedal position sensor (for sensor malfunction detection)	Ignition switch ON, accelerator pedal fully depressed	3.4 to 5.3 V
VCPA (E10-26) - EPA (E10-20)	L-R - BR-W	Power source of accelerator pedal position sensor (for VPA)	Ignition switch ON	4.5 to 5.5 V
VCP2 (E10-27) - EPA2 (E10-21)	W - W-R	Power source of accelerator pedal position sensor (for VPA2)	Ignition switch ON	4.5 to 5.5 V
OC1+ (E6-17) - OC1- (E6-16)	R - W	Camshaft timing oil control valve (OCV)	Idling	Pulse generation (see waveform 3)
OC2+ (E6-15) - OC2- (E6-14)	R-B - R-W	Camshaft timing oil control valve (OCV)	Idling	Pulse generation (see waveform 3)
VV1+ (E6-25) - VV1- (E6-24)	W - B	Variable Valve Timing (VVT) sensor (Bank 1)	Idling	Pulse generation (see waveform 4)
VV2+ (E6-18) - VV2- (E6-28)	W - B	Variable Valve Timing (VVT) sensor (Bank 2)	Idling	Pulse generation (see waveform 4)
M+ (E8-5) - ME01 (E7-3)	R - W-B	Throttle actuator	Idling	Pulse generation (see waveform 7)
M- (E8-4) - ME01 (E7-3)	W - W-B	Throttle actuator	Idling	Pulse generation (see waveform 8)
A1A+ (E7-22) - E1 (E6-1)	B - BR	Air fuel ratio (A/F) sensor	Ignition switch ON	3.3 V*
A1A- (E7-30) - E1 (E6-1)	W - BR	Air fuel ratio (A/F) sensor	Ignition switch ON	3.0 V*
A2A+ (E7-23) - E1 (E6-1)	R - BR	Air fuel ratio (A/F) sensor	Ignition switch ON	3.3 V*
A2A- (E7-31) - E1 (E6-1)	G - BR	Air fuel ratio (A/F) sensor	Ignition switch ON	3.0 V*
HA1A (E7-2) - E04 (E7-7)	R - W-B	Air fuel ratio (A/F) sensor heater	Idling	Pulse generation (see waveform 12)
HA2A (E7-1) - E04 (E7-7)	Y - W-B	Air fuel ratio (A/F) sensor heater	Ignition switch ON	Pulse generation (see waveform 12)
OX1B (E8-18) - E1 (E6-1) OX2B (E7-33) - E1 (E6-1)	B - BR W - BR	Heated oxygen (HO2) sensor	Maintain engine speed at 2,500 rpm for 2 minutes after warming up	Pulse generation (see waveform 10)
HT1B (E8-1) - E1 (E6-1) HT2B (E7-5) - E1 (E6-1)	L - BR R-B - BR	Heated oxygen (HO2) sensor heater	Idling	Below 3.0 V
HT1B (E8-1) - E1 (E6-1) HT2B (E7-5) - E1 (E6-1)	L - BR R-B - BR	Heated oxygen (HO2) sensor heater	Ignition switch ON	9 to 14 V
#10 (E6-2) - E01 (E8-7) #20 (E6-3) - E01 (E8-7) #30 (E6-4) - E01 (E8-7) #40 (E6-5) - E01 (E8-7) #50 (E6-6) - E01 (E8-7) #60 (E6-7) - E01 (E8-7) #70 (E8-3) - E01 (E8-7) #80 (E8-2) - E01 (E8-7)	Y - W-B B - W-B L - W-B R - W-B G - W-B R-L - W-B W - W-B B-W - W-B	Fuel injector	Ignition switch ON	9 to 14 V
#10 (E6-2) - E01 (E8-7) #20 (E6-3) - E01 (E8-7) #30 (E6-4) - E01 (E8-7) #40 (E6-5) - E01 (E8-7) #50 (E6-6) - E01 (E8-7) #60 (E6-7) - E01 (E8-7) #70 (E8-3) - E01 (E8-7) #80 (E8-2) - E01 (E8-7)	Y - W-B B - W-B L - W-B R - W-B G - W-B R-L - W-B W - W-B B-W - W-B	Fuel injector	Idling	Pulse generation (see waveform 1)
KNK1 (E7-29) - EKNK (E7-28)	G - R	Knock sensor 1	Maintain engine speed at 4,000 rpm after warming up	Pulse generation (see waveform 2)
KNK2 (E7-21) - EKN2 (E7-20)	W - B	Knock sensor 2	Maintain engine speed at 4,000 rpm after warming up	Pulse generation (see waveform 2)
G2+ (E6-19) - G2- (E6-29)	R - G	Camshaft position sensor	Idling	Pulse generation (see waveform 5)
NE+ (E6-21) - NE- (E6-20)	L - G	Crankshaft position sensor	Idling	Pulse generation (see waveform 4)
PRG (E8-34) - E1 (E6-1)	L-B - BR	Purge VSV	Ignition switch ON	9 to 14 V
PRG (E8-34) - E1 (E6-1)	L-B - BR	Purge VSV	Idling	Pulse generation (see waveform 13)
SPD (E9-8) - E1 (E6-1)	V - BR	Speed signal from combination meter	Ignition switch ON, Rotate driving wheel slowly	Pulse generation (see waveform 6)
FPR (E6-30) - E1 (E6-1)	G-W - BR	Fuel pump relay	Ignition switch ON	0 to 3.0 V
FC (E10-10) - E1 (E6-1)	B-W - BR	Fuel pump control	Ignition switch ON	9 to 14 V
IGT1 (E8-8) - E1 (E6-1) IGT2 (E8-15) - E1 (E6-1) IGT3 (E8-11) - E1 (E6-1) IGT4 (E8-10) - E1 (E6-1) IGT5 (E8-13) - E1 (E6-1) IGT6 (E8-12) - E1 (E6-1) IGT7 (E8-14) - E1 (E6-1) IGT8 (E8-9) - E1 (E6-1)	B - BR R - BR L - BR G - BR Y - BR B-Y - BR B-L - BR L-B - BR	Ignition coil (ignition signal)	Idling	Pulse generation (see waveform 9)
IGF1 (E8-24) - E1 (E6-1) IGF2 (E8-25) - E1 (E6-1)	B-W - BR B-R - BR	Ignition coil (ignition confirmation signal)	Ignition switch ON	4.5 to 5.5 V
IGF1 (E8-24) - E1 (E6-1) IGF2 (E8-25) - E1 (E6-1)	B-W - BR B-R - BR	Ignition coil (ignition confirmation signal)	Idling	Pulse generation (see waveform 9)
STP (E10-15) - E1 (E6-1)	G-W - BR	Stop light switch	Brake pedal depressed	7.5 to 14 V
STP (E10-15) - E1 (E6-1)	G-W - BR	Stop light switch	Brake pedal released	Below 1.5 V
ST1- (E10-16) - E1 (E6-1)	R-G - BR	Stop light switch (opposite to STP terminal)	Ignition switch ON, Brake pedal depressed	Below 1.5 V
ST1- (E10-16) - E1 (E6-1)	R-G - BR	Stop light switch (opposite to STP terminal)	Ignition switch ON, Brake pedal released	7.5 to 14 V
STAR NSW (E7-8) - E1 (E6-1)	B-W - BR	Park/Neutral position (PNP) switch	Ignition switch ON, Shift lever position other than P and N	9 to 14 V
STAR NSW (E7-8) - E1 (E6-1)	B-W - BR	Park/Neutral position (PNP) switch	Ignition switch ON, Shift lever position in P, N	Below 3.0 V
W (E9-30) - E1 (E6-1)	W - BR	MIL	Idling	9 to 14 V
W (E9-30) - E1 (E6-1)	W - BR	MIL	Ignition switch ON	Below 3.0 V
ELS1 (E9-13) - E1 (E6-1)	G-W - BR	Electric load	Taillight switch ON, Defogger switch ON	7.5 to 14 V
ELS1 (E9-13) - E1 (E6-1)	G-W - BR	Electric load	Taillight switch OFF, Defogger switch OFF	0 to 1.5 V
TACH (E9-1) - E1 (E6-1)	B - BR	Engine speed	Idling	Pulse generation (see waveform 11)
TC (E10-23) - E1 (E6-1)	P-B - BR	Terminal TC of DLC3	Ignition switch ON	9 to 14 V
STA (E6-11) - E1 (E6-1)	B-R - BR	Starter signal	Cranking	6 V or higher
STSW (E6-12) - E1 (E6-1)	B-W - BR	Park/neutral position switch	Shift lever position P or N, Ignition switch START	9 to 14 V
VPMP (E10-5) - E1 (E6-1)	L - BR	Vent valve (built into canister pump module)	Ignition switch ON	9 to 14 V
MPMP (E10-6) - E1 (E6-1)	B-R - BR	Leak detection pump (built into canister pump module)	Leak detection pump OFF	0 to 3 V
MPMP (E10-6) - E1 (E6-1)	B-R - BR	Leak detection pump (built into canister pump module)	Leak detection pump ON	9 to 14 V
PPMP (E10-22) - E2 (E8-28)	L-B - BR	Canister pressure sensor (built into canister pump module)	Ignition switch ON	3 to 3.6 V
AIV1 (E8-27) - E1 (E6-1)	W-G - BR	VSV for air injection system (Bank 1)	Ignition switch ON	9 to 14 V
AIV2 (E8-26) - E1 (E6-1)	W-R - BR	VSV for air injection system (Bank 2)	Ignition switch ON	9 to 14 V
AIRV (E10-4) - E1 (E6-1)	R - BR	Air switching valve for secondary air injection system	Ignition switch ON	9 to 14 V
AIRP (E10-25) - E1 (E6-1)	L - BR	Air pump control	Ignition switch ON	9 to 14 V
AIP (E8-32) - E1 (E6-1)	W-L - BR	Secondary air injection system pressure sensor signal	Ignition switch ON	3 to 3.6 V
AIDI (E10-13) - E1 (E6-1)	W - BR	Diagnostic information signal for air injection system	Air injection system operates	Pulse generation (see waveform 16)
ACIS (E8-33) - E1 (E6-1)	W - BR	VSV for ACIS	Ignition switch ON	9 to 14 V
CANH (E9-33) - E1 (E6-1)	B - BR	CAN communication line	Ignition switch ON	Pulse generation (see waveform 14)
CANL (E9-34) - E1 (E6-1)	W - BR	CAN communication line	Ignition switch ON	Pulse generation (see waveform 15)

HINT:

*: The ECM terminal voltage is constant regardless of the output voltage from the sensor.

1. WAVEFORM 1

Fuel injector

ECM Terminal Names	Between #10 (to #80) and E01
Tester Range	20 V/DIV., 20 msec./DIV.
Condition	Idling

HINT:

The wavelength becomes shorter as engine rpm increases.

2. WAVEFORM 2

Knock sensor

ECM Terminal Name

Between KNK1 and EKNK

Between KNK2 and EKN2

Tester Range

1 V/DIV., 1 msec./DIV.

Condition

Maintain engine RPM at 2,000 rpm after engine warmed-up

HINT:

The wavelength becomes shorter as engine rpm increases.
The waveforms and amplitudes displayed differ slightly depending on the vehicle.

3. WAVEFORM 3

Camshaft timing oil control valve (OCV)

ECM Terminal Name

Between OC1+ and OC1-

Between OC2+ and OC2-

Tester Range

5 V/DIV., 200 msec./DIV.

Condition

Accelerate slowly after engine warmed-up

HINT:

In the DATA LIST, the items OCV DUTY B1 and B2 show the duty ratio of voltage flowing to the OCV (see illustration).

OCV DUTY B1, B2 = A/B x 100 (%)

4. WAVEFORM 4

Variable Valve Timing (VVT) sensor (bank 1, 2) and Crankshaft position sensor

ECM Terminal Name

CH1: Between VV1+ and VV1-

CH2: Between VV2+ and VV2-

CH3: Between NE+ and NE-

Tester Range

2 V/DIV., 20 msec./DIV.

Condition

Idle after engine warmed-up

HINT:

The wavelength becomes shorter as engine rpm increases.

5. WAVEFORM 5

Camshaft position sensor

ECM Terminal Name	Between G2+ and G2-
Tester Range	2 V/DIV., 200 msec./DIV.
Condition	Idle after engine warmed up

HINT:

The wavelength becomes shorter as engine rpm increases.
*1: Crank angle
*2: 180°
*3: 120°
*4: 60°

6. WAVEFORM 6

Vehicle speed signal

ECM Terminal Name	Between SPD and E1
Tester Range	5 V/DIV., 20 msec./DIV.
Condition	Driving by 40 km/h (25 mph)

HINT:

The wavelength becomes shorter as engine rpm increases.

7. WAVEFORM 7

Throttle actuator positive terminal

ECM Terminal Name	Between M+ and ME01
Tester Range	5 V/DIV., 1 msec./DIV.
Condition	Idle after engine warmed-up

HINT:

The duty ratio varies depending on the throttle opening operation.

8. WAVEFORM 8

Throttle actuator negative terminal

ECM Terminal Name	Between M- and ME01
Tester Range	5 V/DIV., 1 msec./DIV.
Condition	Idle after engine warmed-up

HINT:

The duty ratio varies depending on the throttle opening operation.

9. WAVEFORM 9

Igniter IGT signal (from ECM to igniter) and Igniter IGF signal (from igniter to ECM)

ECM Terminal Name

(a) Between IGT1 (to IGT8) and E1

(b) Between IGF1 (IGF2) and E1

Tester Range

2 V/DIV., 20 msec./DIV.

Condition

Idling

HINT:

The wavelength becomes shorter as engine rpm increases.

10. WAVEFORM 10

Heated oxygen (HO2) sensor

ECM Terminal Names	Between OX1B (OX2B) and E2
Tester Ranges	0.2 V/DIV., 200 msec./DIV.
Conditions	Engine speed maintained 2,500 rpm for 2 minutes after warming up sensor

HINT:

In the DATA LIST, item O2S B1S2 shows the ECM input values from the heated oxygen sensor.

11. WAVEFORM 11

Engine speed signal

ECM Terminal Names	Between TACH and E1
Tester Range	5 V/DIV., 10 msec./DIV.
Condition	Idling

HINT:

The wavelength becomes shorter as engine rpm increases.

12. WAVEFORM 12

Air fuel ratio (A/F) sensor heater signal

ECM Terminal Names

Between HA1A and E04

Between HA2A and E04

Tester Range

5 V/DIV., 10 msec./DIV.

Condition

Idling

13. WAVEFORM 13

Purge VSV

ECM Terminal Names	Between PRG and E1
Tester Range	10 V/DIV., 50 msec./DIV.
Condition	Idling

HINT:

The wavelength becomes shorter as vehicle speed increases.

14. WAVEFORM 14

CAN communication signal

ECM Terminal Names	Between CANH and E1
Tester Range	1 V/DIV., 10 μsec./DIV.
Condition	Stop engine and ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.

15. WAVEFORM 15

CAN communication signal

ECM Terminal Names	Between CANL and E1
Tester Range	1 V/DIV., 10 μsec./DIV.
Condition	Stop engine and ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.

16. WAVEFORM 16

Terminal DI of air injection control driver

ECM Terminal Names	Between AIDI and E1
Tool setting	5 V/DIV, 20 to 40 msec./DIV
Condition	Performing ACTIVE TEST using intelligent tester (air injection control system)

HINT:

The wavelength changes when the air injection control driver detects malfunctions in the air injection system .