Toyota 2GR-FE Manual page 201

Symbols (Terminal No.)
A1A- (B46-30) - E1 (C55-81)
A2A- (C55-119) - E1 (C55-81)
A2A- (C55-119) - E1 (C55-81)
OX2B (C55-87) - EX2B (C55-64)
OX1B (C55-88) - EX1B (C55-65)
5 V/DIV
Ground
1 ms./DIV
0.2 V/DIV
Ground
200 ms./DIV
30 V/DIV
Ground
20 ms./DIV
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
Wiring Colors Terminal Descriptions
P - W-B A/F sensor
Y - W-B A/F sensor
Y - W-B A/F sensor
B - W-R Heated oxygen sensor
W - BR signal
*1
: The ECM terminal voltage is constant regardless of
the output voltage from the sensor.
*2
: With Smart Key system
(a) WAVEFORM 1
ECM Terminal Names
Tester Ranges
Conditions
A093229E19
(b) WAVEFORM 2
ECM Terminal Names
Tester Ranges
Conditions
A088863E21
(c) WAVEFORM 3
ECM Terminal Names
Tester Ranges
Conditions
G035622E06
Conditions
Ignition switch on (IG)
Ignition switch on (IG)
Ignition switch on (IG)
With engine speed at 2,500 rpm
for 2 minutes after warming up
(1) Camshaft timing Oil Control Valve (OCV)
operation signal
Between OC1+ and OC1- , OC2+ and OC2- , OE1+
and OE1- , or OE2+ and OE2-
5 V/DIV, 1 ms./DIV
Idling
HINT:
The wavelength becomes shorter as the engine
rpm increases.
(1) Heated oxygen sensor signal
Between OX1B and EX1B, or OX2B and EX2B
0.2 V/DIV, 200 ms./DIV
Engine speed is maintained at 2,500 rpm for 2
minutes after sensor is warmed up
HINT:
In the DATA LIST, item O2S B1S2 shows the
ECM input values from the heated oxygen
sensor.
(1) Fuel injector operation signal
Between #10 (to 60) and E01
30 V/DIV, 20 ms./DIV
Idling
HINT:
The wavelength becomes shorter as the engine
rpm increases.
ES–45
STD Voltages
*1
3.0 V
*1
3.3 V
*1
3.0 V
Pulse generation
(see waveform 2)
ES