• 1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–35


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    • Abstract: 1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–35TERMINALS OF ECME5 E6 E4 E3ES

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1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–35
TERMINALS OF ECM
E5 E6 E4 E3
ES
A066714E22
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
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
Battery (for measuring
BATT (E3-3) - E1 (E5-3) B-Y - BR battery voltage and for Always 9 to 14 V
ECM memory)
IGSW (E3-9) - E1 (E5-3) B-R - BR Ignition switch Ignition switch ON 9 to 14 V
FC (E3-25) - E1 (E5-3) G - BR Fuel pump control Ignition switch ON 9 to 14 V
FC (E3-25) - E1 (E5-3) G - BR Fuel pump control Idling Below 1.5 V
W (E4-30) - E1 (E5-3) Y-R - BR MIL Idling 9 to 14 V
W (E4-30) - E1 (E5-3) Y-R - BR MIL Ignition switch ON Below 3.5 V
+B (E3-1) - E1 (E5-3) B-R - BR Power source of ECM Ignition switch ON 9 to 14 V
+B2 (E3-2) - E1 (E5-3) B-R - BR Power source of ECM Ignition switch ON 9 to 14 V
MREL (E3-8) - E1 (E5-3) GR - BR EFI relay Ignition switch ON 9 to 14 V
Ignition switch ON, Brake pedal
STP (E4-4) - E1 (E5-3) G-W - BR Stop light switch 9 to 14 V
depressed
Ignition switch ON, Brake pedal
STP (E4-4) - E1 (E5-3) G-W - BR Stop light switch Below 1.5 V
released
Pulse generation
F/PS (E4-32) - E1 (E5-3) Y - BR Airbag sensor Ignition switch ON
(see waveform 1)
STA (E3-12) - E1 (E5-3) B-Y - BR Starter signal Cranking 5.5 V or more
Power steering oil
PSP (E6-32) - E1 (E5-3) Y - BR Ignition switch ON 9 to 14 V
pressure sensor
Speed signal from Pulse generation
SPD (E4-8) - E1 (E5-3) V-W - BR Driving at 20 km/h (12 mph)
combination meter (see waveform 2)
Pulse generation
TACH (E4-1) - E1 (E5-3) B - BR Engine speed Idling
(see waveform 3)
Power source of sensor
VC (E5-18) - E2 (E5-28) R-W - BR Ignition switch ON 4.5 to 5.5 V
(specific voltage)
ES–36 1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
Ignition switch ON and engine
PRG (E6-23) - E01 (E5-7) W-G - BR Purge VSV 9 to 14 V
stopping
Pulse generation
PRG (E6-23) - E01 (E5-7) W-G - BR Purge VSV Idling with warm engine
(see waveform 4)
VG (E6-28) - E2G (E6-30) P-V Mass air flow meter Idling, A/C switch OFF 1.1 to 1.5 V
Engine speed maintained at 2,500
Heated oxygen sensor Pulse generation
OX1A (E5-21) - E2 (E5-28) W - BR rpm for 2 minutes after warming up
(Sensor 1) (see waveform 5)
sensor
Heated oxygen sensor
HT1A (E5-1) - E03 (E6-4) B-R - BR Idling Below 3.0 V
heater (Sensor 1)
Heated oxygen sensor
HT1A (E5-1) - E03 (E6-4) B-R - BR Ignition switch ON 9 to 14 V
heater (Sensor 1)
Engine speed maintained at 2,500
ES OX1B (E5-25) - E2 (E5-28) L - BR
Heated oxygen sensor
(Sensor 2)
rpm for 2 minutes after warming up
sensor
Pulse generation
(see waveform 6)
Heated oxygen sensor
HT1B (E5-2) - E03 (E6-4) W - BR Idling Below 3.0 V
heater (Sensor 2)
Heated oxygen sensor
HT1B (E5-2) - E03 (E6-4) W - BR Ignition switch ON 9 to 14 V
heater (Sensor 2)
Engine coolant Idling, Engine coolant temperature
THW (E5-32) - E2 (E5-28) R-L - BR 0.2 to 1.0 V
temperature sensor 80°C (176°F)
Pulse generation
G2+ (E5-26) - NE- (E5-34) B-W Camshaft position sensor Idling
(see waveform 7)
Crankshaft position Pulse generation
NE+ (E5-27) - NE- (E5-34) O-W Idling
sensor (see waveform 7)
Intake air temperature Idling, Intake air temperature 20°C
THA (E6-29) - E2 (E5-28) Y-B - BR 0.5 to 3.4 V
sensor (68°F)
Ignition switch ON, Throttle valve
VTA1 (E5-20) - E2 (E5-28) Y-R - BR Throttle position sensor 0.3 to 1.0 V
fully closed
Ignition switch ON, Throttle valve
VTA1 (E5-20) - E2 (E5-28) Y-R - BR Throttle position sensor 3.2 to 4.9 V
fully open
#10 (E6-6) - E01 (E5-7) B-O - BR
#20 (E6-5) - E01 (E5-7) B-Y - BR
Injector Ignition switch ON 9 to 14 V
#30 (E6-2) - E01 (E5-7) B-W - BR
#40 (E6-1) - E01 (E5-7) B-L - BR
#10 (E6-6) - E01 (E5-7) B-O - BR
#20 (E6-5) - E01 (E5-7) B-Y - BR Pulse generation
Injector Idling
#30 (E6-2) - E01 (E5-7) B-W - BR (see waveform 8)
#40 (E6-1) - E01 (E5-7) B-L - BR
IGT1 (E5-17) - E1 (E5-3) G-R - BR
IGT2 (E5-16) - E1 (E5-3) G-B - BR Ignition coil (ignition Pulse generation
Idling
IGT3 (E5-15) - E1 (E5-3) G-O - BR signal) (see waveform 9)
IGT4 (E5-14) - E1 (E5-3) G-Y - BR
Ignition coil (ignition
IGF (E5-23) - E1 (E5-3) Y - BR Ignition switch ON 4.5 to 5.5 V
confirmation signal)
Ignition coil (ignition Pulse generation
IGF (E5-23) - E1 (E5-3) Y - BR Idling
confirmation signal) (see waveform 9)
RSD (E5-5) - E01 (E5-7) B-R - BR Idle air control valve Ignition switch ON 9 to 14 V
Camshaft timing oil Pulse generation
OC1+ (E5-13) - OC1- (E5-12) R-Y - R-B Ignition switch ON
control valve (see waveform 10)
Pulse generation
KNK1 (E5-29) - EKNK (E5-30) W-B Knock sensor Idling
(see waveform 11)
TC (E4-17) - E1 (E5-3) P-B - BR Terminal TC of DLC3 Ignition switch ON 9 to 14 V
Park/Neutral position Ignition switch ON and shift lever P
NSW (E3-30)* - E1 (E5-3) B - BR Below 1 V
switch signal or N position
Park/Neutral position Ignition switch ON and shift lever
NSW (E3-30)* - E1 (E5-3) B - BR 9 to 14 V
switch signal except P or N position
1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–37
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
Vent valve
VPMP (E3-5) - E1 (E5-3) P - BR (built into canister pump Ignition switch ON 9 to 14 V
module)
Leak detection pump
MPMP (E3-6) - E1 (E5-3) V - BR (built into canister pump Leak detection pump OFF 0 to 3 V
module)
Leak detection pump
MPMP (E3-6) - E1 (E5-3) V - BR (built into canister pump Leak detection pump ON 9 to 14 V
module)
Canister pressure sensor
PTMK (E3-31) - E1 (E5-3) R - BR (built into canister pump Ignition switch ON 3 to 3.6 V
module)
Pulse generation
CANH (E4-33) - E1 (E5-3) B - BR CAN communication line Ignition switch ON
CANL (E4-34) - E1 (E5-3) W - BR CAN communication line Ignition switch ON
(see waveform 12)
Pulse generation
ES
(see waveform 13)
*: A/T only
1. WAVEFORM 1
5 V/DIV. Airbag sensor assembly
ECM Terminal Names Between F/PS and E1
Tester Ranges 5 V/DIV., 500 msec./DIV.
Conditions Idling with warm engine
GND
500 msec./DIV. A093227E04
2. WAVEFORM 2
Vehicle speed signal
5 V/DIV.
ECM Terminal Names Between SPD and E1
Tester Ranges 5 V/DIV., 20 msec./DIV.
Conditions Driving at 25 mph (40 km/h)
GND
HINT:
The wavelength becomes shorter as the vehicle speed
increases.
20 msec./DIV.
A093224E04
3. WAVEFORM 3
Engine speed signal
5 V/DIV.
ECM Terminal Names Between TACH and E1
Tester Ranges 5 V/DIV., 10 msec./DIV.
Conditions Idling
GND
HINT:
The wavelength becomes shorter as the engine rpm
increases.
10 msec./DIV. A093225E01
ES–38 1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
4. WAVEFORM 4
10 V/DIV.
Purge VSV
ECM Terminal Names Between PRG and E01
Tester Ranges 10 V/DIV., 50 msec./DIV.
Conditions Idling
GND HINT:
If the waveform is not similar to the illustration, check the
waveform again after idling for 10 minutes or more.
50 msec./DIV. A116415E02
5. WAVEFORM 5
0.2 V/DIV. Heated Oxygen (HO2) sensor (sensor 1)
ES ECM Terminal Names Between OX1A and E2
Tester Ranges 0.2 V/DIV., 200 msec./DIV.
Conditions Engine maintained at 2,500 rpm when warmed up
HINT:
GND In the DATA LIST, item O2S B1S1 shows the ECM input
values from the front HO2 sensor (sensor 1).
200 msec./DIV.
A093282E17
6. WAVEFORM 6
0.2 V/DIV. Heated Oxygen (HO2) sensor (sensor 2)
ECM Terminal Names Between OX1B and E2
Tester Ranges 0.2 V/DIV., 200 msec./DIV.
Conditions Engine maintained at 2,500 rpm when warmed up
HINT:
GND In the DATA LIST, item O2S B1S2 shows the ECM input
values from the rear HO2 sensor (sensor 2).
200 msec./DIV. A088863E05
7. WAVEFORM 7
5 V/DIV.
Camshaft position sensor and crankshaft position
sensor
(a) GND ECM Terminal Names (a) Between G2+ and NE-
(b) Between NE+ and NE-
Tester Ranges 5 V/DIV., 20 msec./DIV.
Conditions Idling
(b) GND
HINT:
20 msec./DIV. A063955E09
The wavelength becomes shorter as the engine rpm
increases.
8. WAVEFORM 8
20 V/DIV. Fuel injector
ECM Terminal Names Between #10 (to 40) and E01
Tester Ranges 20 V/DIV., 20 msec./DIV.
Conditions Idling
HINT:
GND The wavelength becomes shorter as the engine rpm
increases.
20 msec./DIV. A093279E04
1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–39
9. WAVEFORM 9
2 V/DIV. Igniter IGT signal (from ECM to igniter) and igniter
IGF signal (from igniter to ECM)
(a) ECM Terminal Name
(a) Between IGT (1 to 4) and E1
(b) Between IGF and E1
GND
Tester Ranges 2 V/DIV., 20 msec./DIV.
(b) Conditions Idling
GND
HINT:
20 msec./DIV. The wavelength becomes shorter as the engine rpm
A093278E15
increases.
10. WAVEFORM 10
5 V/DIV. Camshaft timing oil control valve (OCV)
ECM Terminal Names Between OC1+ and OC1- ES
Tester Ranges 5 V/DIV., 200 msec./DIV.
Conditions Idling
GND
HINT:
The wavelength becomes shorter as the engine rpm
increases.
200 msec./DIV.
A093229E09
11. WAVEFORM 11
Knock sensor
ECM Terminal Names Between KNK1 and EKNK
1 V/DIV.
0.01 to 10 V/DIV.,
Tester Ranges
0.01 to 10 msec./DIV.
GND Conditions Engine maintained at 4,000 rpm when warmed up
HINT:
• The wavelength becomes shorter as the engine rpm
1 msec./DIV. increases.
A085286E15
• The waveforms and amplitudes displayed differ
slightly depending on the vehicle.
12. WAVEFORM 12
CAN communication signal
1 V/DIV. ECM Terminal Names Between CANH and E1
Tester Ranges 1 V/DIV., 10 µsec./DIV.
Conditions Engine stopped and ignition switch ON
HINT:
GND
The waveform varies depending on the CAN
communication signal.
10 μsec./DIV. A086154E07
ES–40 1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
13. WAVEFORM 13
CAN communication signal
1 V/DIV.
ECM Terminal Names Between CANL and E1
Tester Ranges 1 V/DIV., 10 µsec./DIV.
Conditions Engine stopped and ignition switch ON
HINT:
GND The waveform varies depending on the CAN
communication signal.
10 μsec./DIV.
A086155E08
ES


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