ES–262AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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(b) Monitor Conditions
(1) Turn the ignition switch OFF and wait for 6
hours.
HINT:
Do not start the engine until checking Readiness
Monitor status. If the engine is started, the step
described above must be repeated.
(c) Monitor Status
(1) Connect the intelligent tester to the DLC3.
(2) Turn the ignition switch ON.
(3) Turn the tester ON.
(4) Check the Readiness Monitor status displayed
on the tester.
If the status does not switch to COMPL (complete), restart the
engine, make sure that the preconditions have been met, and
then perform the Monitor Conditions again.
4. AIR-FUEL RATIO (A/F) AND HEATED OXYGEN (HO2)
SENSOR MONITORS (ACTIVE AIR-FUEL RATIO
CONTROL TYPE)
(a) Preconditions
The monitor will not run unless:
– 2 minutes or more have elapsed since the engine
was started.
– The Engine Coolant Temperature (ECT) is 75
C
(167
F) or more.
– Cumulative driving time at a vehicle speed of 48
km/h (30 mph) or more exceeds 6 minutes.
A115374E04
2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–27
ES
– Air-fuel ratio feedback control is performed.
(b) Drive Pattern for front A/F sensor and HO2 sensor
(1) Connect the intelligent tester to the DLC3.
(2) Turn the ignition switch ON.
(3) Turn the tester ON.
(4) Clear DTCs (see page ES-35).
(5) Start the engine, and warm it up until the ECT
reaches 75
C (167F) or higher.
(6) Drive the vehicle at between 60 km/h (38 mph)
and 120 km/h (75 mph) for at least 10 minutes.
(7) Change the transmission to 2nd gear.
(8) Accelerate the vehicle to 64 km/h (40 mph) or
more by depressing the accelerator pedal for at
least 10 seconds.
(9) Soon after performing step (8) above, release
the accelerator pedal for at least 4 seconds without
depressing the brake pedal, in order to execute fuel-
cut control.
(10) Allow the vehicle to decelerate until the vehicle
speed declines to less than 10 km/h (6 mph).
(11) Repeat steps from (8) through (10) above at
least 3 times in one driving cycle.
(c) Monitor Status
(1) Check the Readiness Monitor status displayed
on the tester.
(2) If the status does not switch to COMPL
(complete), make sure that the preconditions
have been met, and then perform steps from (5)
through (11) in the Drive Pattern above.
5. AIR-FUEL RATIO (A/F) AND HEATED OXYGEN (HO2)
SENSOR HEATER MONITORS (FRONT A/F AND
REAR HO2 SENSOR TYPE)
A121604E06
ES–282AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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(a) Preconditions
The monitor will not run unless:
– The MIL is OFF.
(b) Drive Pattern
(1) Connect the intelligent tester to the DLC3.
(2) Turn the ignition switch ON.
(3) Turn the tester ON.
(4) Clear DTCs (if set) (see page ES-35).
(5) Start the engine.
(6) Allow the engine to idle for 10 minutes or more.
(7) Drive the vehicle at 40 km/h (25 mph) or more
for at least 2 minutes.
(c) Monitor Status
(1) Check the Readiness Monitor status displayed
on the tester.
If the status does not switch to COMPL
(complete), make sure that the preconditions
have been met, and repeat steps from (5) to (7)
described in the Drive Pattern above.
2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–29
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PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms are
listed in order of probability in the "Suspected area" column of
the table. Check each symptom by checking the suspected
areas in the order they are listed. Replace parts as
necessary.
SFI system
Symptom Suspected area See page
Engine does not crank (Does not start)1. BatteryCH-4
2. StarterST-8
3. Starter relayST-16
4. Park/neutral position switchAX-108
5. Immobiliser systemEI-3
No initial combustion (Does not start)1. ECM power source circuitES-366
2. Crankshaft position sensorES-402
3. Camshaft position sensorES-399
4. Ignition systemIG-4
5. Fuel pump control circuitES-378
6. ECMES-26
7. VC output circuitES-373
Engine cranks normally but difficult to start1. Fuel pump control circuitES-378
2. CompressionEM-3
Difficult to start with cold engine1. Ignition systemIG-4
2. Spark plugIG-7
3. Fuel pump control circuitES-378
4. InjectorFU-11
Difficult to start with warm engine1. InjectorFU-11
2. Ignition systemIG-4
3. Spark plugIG-7
4. Fuel pump control circuitES-378
High engine idle speed1. Electronic throttle control systemES-265
2. A/C signal circuit -
3. ECM power source circuitES-366
Low engine idle speed (Poor idling)1. Electronic throttle control systemES-265
2. A/C signal circuit -
3. Fuel pump control circuitES-378
4. Air induction systemEC-7
5. PCV hoseEC-7
Rough idling1. CompressionEM-3
2. Spark plugIG-7
3. InjectorFU-11
4. Ignition systemIG-4
5. Fuel pump control circuitES-378
6. Electronic throttle control systemES-265
7. Air induction systemEC-7
8. PCV hoseEC-7
9. Mass air flow meterES-391
ES–302AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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Idle hunting1. Electronic throttle control systemES-265
2. Air induction systemEC-7
3. ECM power source circuitES-366
Hesitation/Poor acceleration1. Fuel pump control circuitES-378
2. Spark plugIG-7
3. Ignition systemIG-4
4. InjectorFU-11
5. Mass air flow meterES-391
6. Electronic throttle control systemES-265
7. Air induction systemEC-7
8. CompressionEM-3
Surging (Poor driveability)1. Spark plugIG-7
2. Fuel pump control circuitES-378
3. Ignition systemIG-4
4. InjectorFU-11
5. Mass air flow meterES-391
6. Variable valve timing systemES-66
7. CompressionEM-3
Engine stalls soon after starting1. Fuel pump control circuitES-378
2. Spark plugIG-7
3. Ignition systemIG-4
4. InjectorFU-11
5. Variable valve timing systemES-66
6. Electronic throttle control systemES-265
7. Air induction systemEC-7
8. PCV hoseEC-7
9. CompressionEM-3
Engine stalls only during A/C operation1. A/C signal circuit -
2. ECMES-26
Unable/difficult to refuel 1. Refueling valve (canister) - Symptom Suspected area See page
2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–31
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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.
A107881E05
Symbols (Terminal No.) Wiring Colors Terminal Descriptions ConditionsSpecified
Conditions
BATT (A9-20) - E1 (B30-104) W - BRBattery (for measuring
battery voltage and for
ECM memory)Always 9 to 14 V
+BM (A9-3) - E1 (B30-104) LG - BRPower source of throttle
actuatorAlways 9 to 14 V
IGSW (A9-28) - E1 (B30-104) B - BR Ignition switch Ignition switch ON 9 to 14 V
+B (A9-2) - E1 (B30-104) B - BR Power source of ECM Ignition switch ON 9 to 14 V
+B2 (A9-1) - E1 (B30-104) B - BR Power source of ECM Ignition switch ON 9 to 14 V
OC1+ (B30-100) - OC1- (B30-
123)BR - LCamshaft timing oil control
valve (OCV)IdlingPulse generation (see
waveform 1)
MREL (A9-44) - E1 (B30-104) O - BR EFI relay Ignition switch ON 9 to 14 V
VG (B30-118) - E2G (B30-116) R - LG Mass air flow meterIdling, Shift lever position P or N, A/
C switch OFF0.5 to 3.0 V
THA (B30-65) - ETHA (B30-88) W - BRIntake air temperature
sensorIdling, Intake air temperature 20
C
(68
F)0.5 to 3.4 V
THW (B30-97) - ETHW (B30-96) GR - BREngine coolant
temperature sensorIdling, Engine coolant temperature
80
C (176F)0.2 to 1.0 V
VCTA (B30-67) - ETA (B30-91) Y - BRPower source of throttle
position sensor (specific
voltage)Ignition switch ON 4.5 to 5.5 V
VTA1 (B30-115) - ETA (B30-91) G - BRThrottle position sensor
(for engine control)Ignition switch ON,
Throttle valve fully closed0.5 to 1.1 V
Ignition switch ON,
Throttle valve fully open3.3 to 4.9 V
VTA2 (B30-114) - ETA (B30-91) L - BRThrottle position sensor
(for sensor malfunction
detection)Ignition switch ON,
Throttle valve fully closed2.1 to 3.1 V
Ignition switch ON,
Throttle valve fully open4.6 to 5.0 V
ES–322AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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VPA (A9-55) - EPA (A9-59) W - YAccelerator pedal position
sensor (for engine control)Ignition switch ON,
Accelerator pedal released0.5 to 1.1 V
Ignition switch ON,
Accelerator pedal fully depressed2.6 to 4.5 V
VPA2 (A9-56) - EPA2 (A9-60) R - OAccelerator pedal position
sensor (for sensor
malfunctioning detection)Ignition switch ON,
Accelerator pedal released1.2 to 2.0 V
Ignition switch ON,
Accelerator pedal fully depressed3.4 to 5.0 V
VCPA (A9-57) - EPA (A9-59) B - YPower source of
accelerator pedal position
sensor (for VPA)Ignition switch ON 4.5 to 5.5 V
VCP2 (A9-58) - EPA2 (A9-60) L - OPower source of
accelerator pedal position
sensor (for VPA2)Ignition switch ON 4.5 to 5.5 V
HA1A (B30-109) - E04 (B30-46) L - W-B A/F sensor heaterIdling Below 3.0 V
Ignition switch ON 9 to 14 V
A1A+ (B30-112) - E1 (B30-104) B -BR A/F sensor Ignition switch ON 3.3 V*
A1A- (B30-113) - E1 (B30-104) R - BR A/F sensor Ignition switch ON3.0 V*
HT1B (B30-47) - E03 (B30-86) R - W-BHeated oxygen sensor
heaterIdling Below 3.0 V
Ignition switch ON 9 to 14 V
OX1B (B30-64) - EX1B (B30-87) B - BR Heated oxygen sensorEngine speed maintained at 2,500
rpm for 2 minutes after warming up
sensorPulse generation (see
waveform 2)
#10 (B30-108) - E01 (B30-45)
#20 (B30-107) - E01 (B30-45)
#30 (B30-106) - E01 (B30-45)
#40 (B30-105) - E01 (B30-45)L - W-B
G - W-B
B - W-B
W - W-BInjectorIgnition switch ON 9 to 14 V
IdlingPulse generation (see
waveform 3)
KNK1 (B30-110) - EKNK (B30-
111 )B - W Knock sensorEngine speed maintained at 4,000
after warming up enginePulse generation (see
waveform 4)
G2+ (B30-99) - G2- (B30-98) L - Y Camshaft position sensor IdlingPulse generation (see
waveform 5)
NE+ (B30-122) - NE- (B30-121) W - B Crankshaft position sensor IdlingPulse generation (see
waveform 5)
IGT1 (B30-85) - E1 (B30-104)
IGT2 (B30-84) - E1 (B30-104)
IGT3 (B30-83) - E1 (B30-104)
IGT4 (B30-82) - E1 (B30-104)R - BR
P - BR
G - BR
L - BRIgnition coil (ignition
signal)IdlingPulse generation (see
waveform 6)
IGF1 (B30-81) - E1 (B30-104) W - BRIgnition coil (ignition
confirmation signal)Ignition switch ON 4.5 to 5.5 V
IdlingPulse generation (see
waveform 6)
PRG (B30-49) - E1 (B30-104) G - BR Purge VSVIgnition switch ON 9 to 14 V
IdlingPulse generation (see
waveform 7)
SPD (A9-8) - E1 (B30-104) V - BRSpeed signal from
combination meterDriving at 20 km/h (12 mph)Pulse generation (see
waveform 8)
STA (A9-48) - E1 (B30-104) LG - BR Starter signal Cranking 5.5 V or
more
STAR (B30-52) - E1 (B30-104) W - BR Starter relay controlIgnition switch ON Below 1.5 V
Cranking 6.0 V or more
STP (A9-36) - E1 (B30-104) L - BR Stop light switchBrake pedal depressed 7.5 to 14 V
Brake pedal released Below 1.5 V
ST1- (A9-35) - E1 (B30-104) GR - BRStop light switch
(opposite to STP terminal)Ignition switch ON,
Brake pedal depressedBelow 1.5 V
Ignition switch ON,
Brake pedal released7.5 to 14 V
M+ (B30-42) - ME01 (B30-43) B - W-B Throttle actuator Idling with warm enginePulse generation (see
waveform 9) Symbols (Terminal No.) Wiring Colors Terminal Descriptions ConditionsSpecified
Conditions
2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–33
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HINT:
*: The ECM terminal voltage is constant regardless of the
output voltage from the sensor.
M- (B30-41) - ME01 (B30-43) W - W-B Throttle actuator Idling with warm enginePulse generation (see
waveform 10)
FC (A9-7) - E1 (B30-104) W - BR Fuel pump controlIgnition switch ON 9 to 14 V
Idling Below 1.5 V
W (A9-24) - E1 (B30-104) R - BR MILIgnition switch ON Below 1.5 V
Idling 9 to 14 V
TC (A9-27) - E1 (B30-104) G - BR Terminal TC of DLC3 Ignition switch ON 9 to 14 V
TACH (A9-15) - E1 (B30-104) GR - BR Engine speed IdlingPulse generation (see
waveform 11)
VPMP (A9-42) - E1 (B30-104) W - BRVent valve (built into
canister pump module)Ignition switch ON 9 to 14 V
MPMP (A9-34) - E1 (B30-104) B - BRLeak detection pump (built
into canister pump
module)Leak detection pump OFF Below 3 V
Leak detection pump ON 9 to 14 V
VCPP (B30-70) - EPPM (B30-94) Y - BRPower source for canister
pressure sensor (specific
voltage)Ignition switch ON 4.5 to 5.5 V
PPMP (B30-71) - EPPM (B30-94) V - BRCanister pressure sensor
(built into canister pump
module)Ignition switch ON 3 to 3.6 V
ELS1 (A9-31) - E1 (B30-104) O - BR Electric loadTaillight switch ON 7.5 to 14 V
Taillight switch OFF Below 1.5 V
ELS3 (A9-33) - E1 (B30-104) G - BR Electric loadDefogger switch ON 7.5 to 14 V
Defogger switch OFF Below 1.5 V
FANL (A9-21) - E1 (B30-104) R - BR Fan No. 1 relayIgnition switch ON 9 to 14 V
Idling with A/C ON, or high engine
coolant temperatureBelow 1.5 V
FANH (A9-22) - E1 (B30-104) W - BR Fan No. 2 relayIdling with high engine coolant
temperatureBelow 1.5 V
ALT (B30-50) - E1 (B30-104) B - BR Generator Ignition switch ON 9 to 14 V
CANH (A9-41) - E1 (B30-104) Y - BR CAN communication line Ignition switch ONPulse generation (see
waveform 12)
CANL (A9-49) - E1 (B30-104) W - BR CAN communication line Ignition switch ONPulse generation (see
waveform 13)
VCIB (B30-69) - EIB (B30-92) R - BR Battery current sensor Ignition switch ON 4.5 to 5.5 V
IB (B30-68) - EIB (B30-92) B - BR Battery current sensor Ignition switch ON 0.5 to 2.5 V
THB (B30-120) - EIB (B30-92) LG - BRBattery temperature
sensorIgnition switch ON, Battery
temperature -30 to 80
C (-22 to
176
F)0.5 to 4.5 V
RLO (B30-51) - E1 (B30-104) GR - BR GeneratorAfter engine warmed up, during
charging control, vehicle driven at
constant speedPulse generation (see
waveform 14)
RLO (B30-51) - E1 (B30-104) GR - BR GeneratorAfter engine warmed up, during
charging control, vehicle
acceleratedPulse generation (see
waveform 15)
RLO (B30-51) - E1 (B30-104) GR - BR GeneratorAfter engine warmed up, during
charging control, vehicle
deceleratedPulse generation (see
waveform 16) Symbols (Terminal No.) Wiring Colors Terminal Descriptions ConditionsSpecified
Conditions