05±368
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
The following A/F CONTROL procedure enables the technician to check and gra\
ph the voltage outputs of
both the heated oxygen sensors.
For displaying the graph indication, enter ºACTIVE TEST / A/F CONTROL / \
USER DATAº, then select ºO2S
B1S1 and O2S B1S2º or ºO2S B2S1 and O2S B2S2º by pressing ºYESº button and push ºENTERº butto\
n
before pressing ºF4º button.
NOTICE:
If the vehicle is short of fuel, the air±fuel ratio becomes LEAN and heated oxygen sensor DTCs will
be recorded, and the CHK ENG then comes on.
HINT:
If different DTCs related to different systems that have terminal E2 as the ground terminal are output
simultaneously, terminal E2 may be open.
Read freeze frame data using the hand±held tester. Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, it is useful for deter\
mining whether the vehicle
was running or stopped, the engine was warmed up or not, the air±fuel ra\
tio was lean or rich, etc. at
the time of the malfunction.
A high heated oxygen sensor (sensor 1) voltage (0.55 V or more) coul\
d be caused by a rich air fuel
mixture. Check for conditions that would cause the engine to run rich.
A low heated oxygen sensor (sensor 1) voltage (0.4 V or less) could b\
e caused by a lean air fuel mix-
ture. Check for conditions that would cause the engine to run lean.
1CHECK OTHER DTC OUTPUT(IN ADDITION TO HEATED OXYGEN SENSOR DTCS)
(a)Read the DTC using the hand±held tester.
Result:
Display (DTC output)Proceed to
Only ºP0130, P0150, P2195, P2196, P2197 and/or P2198º are outputA
ºP0130, P0150, P2195, P2196, P2197 or P2198º and other DTCs are ou\
tputB
HINT:
If any other codes besides ºP0130, P0150, P2195, P2196, P2197 and/or P2\
198º are output, perform
the troubleshooting for those DTCs first.
If a misfiring DTC(s) is present, record the DTC(s) that indicates mis\
firing cylinder(s), then proceed to
A.
BGO TO RELEVANT DTC CHART(See page 05±309)
A
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±463
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using
\b\b
\b
\f
reeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, it is useful for determi\
ning whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lea\
n or rich, etc. at the time of the mal-
function.
1CHECK OTHER DTC OUTPUT(IN ADDITION TO P0556)
(a)Read the DTC using the hand±held tester. Result :
DisplayProceed to
Only ºP0556º is output.A
ºP0556º and other DTCs are output.B
HINT:
If any other codes besides ºP0556º are output, perform the troublesh\
ooting for those DTCs first.
BGO TO RELEVANT DTC CHART(See page 05±309)
A
2 READ VALUE OF HAND±HELD TESTER(INTAKE MANIFOLD ABSOLUTE PRESSURE)
(a) Connect the hand±held tester to the DLC3.
(b) Warm up the engine.
(c) Push the hand±held tester main switch ON.
(d) Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / MAPº and read its value displayed on
the hand±held tester with the shift lever is the ºNº position.
Standard :
ConditionIntake Manifold Absolute Pressure
Ignition switch ON (do not start engine)70 to 110 kPa (525 to 825 mmHg, 20.7 to 32.5 in.Hg)
Running without load (2,500 rpm)20 to 35 kPa (150 to 263 mmHg, 5.9 to 10.4 in.Hg)
NG Go to step 7
OK
3 READ VALUE OF HAND±HELD TESTER(STOP LIGHT SWITCH)
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(c) Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / STOP LIGHT SWº and read its value displayed on the hand±held tester.
Result :
Brake PedalSTP Signal
DepressedON
ReleasedOFF
05±448
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
1CHECK OTHER DTC OUTPUT(IN ADDITION TO P0420 AND/OR P0430)
(a)Read the DTC using the hand±held tester. Result:
Display (DTC output)Proceed to
Only ºP0420 and/or P0430º are outputA
ºP0420 or P0430º and other DTCs are outputB
HINT:
If any other codes besides ºP0420 and/or P0430º are output, perform \
the troubleshooting for those DTCs
first.
BGO TO RELEVANT DTC CHART (See page 05±309)
A
2CHECK FOR EXHAUST GAS LEAKS
NGREPAIR OR REPLACE EXHAUST GAS LEAKAGE POINT
OK
3CHECK HEATED OXYGEN SENSOR(BANK 1, 2 SENSOR 1) (See page 05±363)
NG REPLACE HEATED OXYGEN SENSOR
OK
4CHECK HEATED OXYGEN SENSOR(BANK 1, 2 SENSOR 2) (See page 05±388)
NG REPLACE HEATED OXYGEN SENSOR
OK
REPLACE THREE±WAY CATALYTIC CONVERTER (EXHAUST MANIFOLD)
05±490
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP2119THROTTLE ACTUATOR CONTROL THROTTLE BODY RANGE/PERFORMANCE
CIRCUIT DESCRIPTION
The Electric Throttle Control System (ETCS) is composed of the throttle m\
otor that operates the throttle
valve, the throttle position sensor that detects the opening angle of the throttle valve, the accelerator pedal
position sensor that detects the accelerator pedal position, the ECM that contro\
ls the ETCS, and the one
valve type throttle body.
The ECM controls the throttle motor to provide the proper throttle valve\
opening angle in response to the
driving condition.
The throttle position sensor which is mounted on the throttle body detects \
the opening angle of the throttle
valve, and it provides feedback to the ECM to control the throttle motor.
If the ETCS has a malfunction, the ECM shuts down the power for the throttle motor, and the throttle valve
is closed by the return spring. And the throttle valve is locked at a ce\
rtain opening angle. Also, the whole
electronically controlled throttle operation is cancelled until the system returns to normal and the ignition
switch is turned OFF.
DTC No.DTC Detection ConditionTrouble Area
P2119Throttle opening angle continues to vary greatly from target
throttle opening angleElectric throttle control system
ECM
WIRING DIAGRAM
Refer to DTC P2102 on page 05±483.
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand±held tester. Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, it is useful for determi\
ning whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lea\
n or rich, etc. at the time of the mal-
function.
1CHECK OTHER DTC OUTPUT(IN ADDITION TO DTC P2119)
(a)Read the DTC using hand±held tester.
Result:
Display (DTC output)Proceed to
Only P2119 is outputA
P2119 and other DTCs are outputB
HINT:
If any other codes besides P2119 are output, perform the troubleshooting for those DTCs first.
BGO TO RELEVANT DTC CHART (See page 05±309)
A
05CKS±01
054JF±04
±
DIAGNOSTICS ECD SYSTEM (1CD±FTV)
05±551
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
When the malfunction code is not confirmed the DTC check and the problem sti\
ll can not be confirmed in
the basic inspection, then proceed to this step and perform troubleshooting\
according to the numbered order
given in the table below.
SymptomSuspect AreaSee page
Does not crank (Difficult to start)
2. Starter
3. Starter relay
4. Engine coolant temperature sensor19±22
19±22
10±56
Difficult to start with a cold engine
1. STA signal circuit
2. Injector
3. Fuel filter
4. Compression
5. EC
6. Supply pump
7. Fuel pressure sensor
8. Diesel throttle
9. Glow plug system05±691 11±56
11±82
14±266 10±56
10±56
10±56
10±56
10±56
Difficult to start with a warm engine
1. STA signal circuit
2. Injector
3. Fuel filter
4. Compression
5. EC
6. Supply pump
7. Fuel pressure sensor
8. Diesel throttle05±691 11±56
11±82
14±266 10±56
10±56
10±56
10±56
Engine stalls soon after starting
1. Fuel filter
2. Injector
3. EC power source circuit
4. EC
5. Supply pump
6. Fuel pressure sensor
7. Diesel throttle11±82
11±56
05±686 10±56
10±56
10±56
10±56
Engine stalls (Other than conditions listed abobe)
1. EC power source circuit
2. Injector
3. EC
4. Supply pump
5. Fuel pressure sensor
6. Diesel throttle05±686 11±56
10±56
10±56
10±56
10±56
Incorrect first idle (Poor idling)
1. Fuel filter
2. Injector
3. EC
4. Supply pump
5. Fuel pressure sensor11±82
11±56
10±56
10±56
10±56
High engine idle speed (Poor idling)
1. A/C signal circuit
2. Injector
3. STA signal circuit
4. EC
5. Supply pump
6. Fuel pressure sensor55±3
11±56
05±691 10±56
10±56
10±56
054JD±04
05±544
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Parameters listed in the chart may not be exactly the same as your readings due to\
the type of instrument
or other factors.
If a malfunction code is displayed during the DTC check in the check mode, check the circuit f\
or the codes
listed in the table below. For details of each code, refer to the ''See page '' under the respective ''DTC No.''
in the DTC chart.
\f \b
*1
CHK ENG
P0045
(05±554)Turbo/Super Charger Boost Con-
trol Solenoid Circuit / Open VRV
Open or short in VRV circuit
ECM
P0087
(05±557)Fuel Rail/System Pressure ± Too
Low Open or short in fuel pressure sensor circuit
Fuel pressure sensor
ECM
P0088
(05±563)Fuel Rail/System Pressure ± Too
High
Supply pump
Pressure discharge valve
Short in Supply pump (suction control valve)circuit
Open pressure discharge valve circuit
ECM
P0093
(05±570)Fuel System Leak Detected ±
Large Leak
Fuel line between supply pump and common rail
Fuel line between common rail and injector
Supply pump
Common rail
Injector (P1238 is set simultaneously)
Pressure discharge valve
Open or short in EDU circuit (P0200 is set simultaneously)
Open or short in injector circuit (P0200 and P1238 are set
simultaneously)
EDU (P0200 is set simultaneously)
ECM
P0095
(05±573)Intake Air Temperature Sensor 2
Circuit
O h ti di lt b ilt it i it
P0097
(05±573)Intake Air Temperature Sensor 2
Circuit Low Open or short in diesel turbo inlet air temp. sensor circuit
Diesel turbo inlet air temperature sensor
ECM
P0098
(05±573)Intake Air Temperature Sensor 2
Circuit HighECM
P0100
(05±577)Mass or Volume Air Flow Circuit
Open or short in mass air flow meter circuit
Mass air flow meter
ECM
P0101
(05±583)Mass or Volume Air Flow Circuit
Range/Performance ProblemMass air flow meter
P0102
(05±577)Mass or Volume Air Flow Meter
Circuit Low Input Open or short in mass air flow meter circuit
Mass air flow meter
P0103
(05±577)Mass or Volume Air Flow Meter
Circuit High Input Mass air flow meter
ECM
P0105
(05±584)Manifold Absolute Pressure/
Barometric Pressure Circuit
Open or short in manifold absolute pressure sensor circuit
Manifold absolute pressure sensor
Turbocharger assy
EGR valve assy
ECM
P0106
(05±588)Manifold Absolute Pressure/
Barometric Pressure Circuit
Range/Performance Problem
Manifold absolute pressure sensor
±
DIAGNOSTICS ECD SYSTEM (1CD±FTV)
05±547
AVENSIS REPAIR MANUAL (RM1018E)P1601
(05±673)
Injector Correction Circuit Mal-
function (EEPROM) Injector compensation code
ECM
P1611
(05±650)IC Circuit Malfunction ECM
P2120
(05±674)Throttle/Pedal Position Sensor/
Switch ºDº Circuit Open or short in accelerator pedal position sensor circuit
Accelerator pedal position sensor
ECM
P2121
(05±681)Throttle/Pedal Position Sensor/
Switch ºDº Circuit Range/Perfor-
mance Accelerator pedal position sensor circuit
Accelerator pedal position sensor
ECM
P2122
(05±674)Throttle/Pedal Position Sensor/
Switch ºDº Circuit Low Input
P2123
(05±674)Throttle/Pedal Position Sensor/
Switch ºDº Circuit High Input
P2125
(05±674)Throttle/Pedal Position Sensor/
Switch ºEº Circuit
Open or short in accelerator pedal position sensor circuit
P2127
(05±674)Throttle/Pedal Position Sensor/
Switch ºEº Circuit Low Input
Oen or short in accelerator edal osition sensor circuit
Accelerator pedal position sensor
ECM
P2128
(05±674)Throttle/Pedal Position Sensor/
Switch ºEº Circuit High Input
P2138
(05±674)Throttle/Pedal Position Sensor/
Switch ºDº/ºEº Voltage Correla-
tion
P2226
(05±684)Barometric Pressure Circuit
P2227
(05±685)Barometric Pressure Circuit
Range/Performance
ECM
P2228
(05±685)Barometric Pressure Circuit Low
Input ECM
P2229
(05±685)Barometric Pressure Circuit High
Input
B2799
(05±1625)Engine Immobiliser System Mal-
function Immobiliser system
*1: Check engine warning light (CHK ENG) is illuminated
05CPB±01
FI2547
A76859
Hand±held
Tester
DLC3
05±528
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
PRE±CHECK
1.DIAGNOSIS SYSTEM
(a)Description for Euro±OBD
When troubleshooting Euro±OBD vehicles, the
only difference from the usual troubleshooting pro-
cedure is that you connect an OBD scan tool com-
plying with ISO 15031±4 or a hand±held tester to
the vehicle, and read the various data output from
the vehicle's ECM.
Euro±OBD regulations require that the vehicle's
on±board computer illuminates the check engine
warning light (CHK ENG) on the instrument panel
when the computer detects a malfunction in the
emission control system / components or in the
power train control components which affect vehicle
emissions, or a malfunction in the computer. In addi-
tion to an illumination of the CHK ENG when a mal-
function is detected, the applicable Diagnostic
Trouble Codes (DTCs) prescribed by ISO 15031±4
are recorded in the ECM memory (See page
05±544). If the malfunction does not reoccur in 3
consecutive trips, the CHK ENG goes off automati-
cally but the DTCs remain recorded in the ECM
memory.
To check the DTCs, connect the OBD scan tool or
hand±held tester to Data Link Connector 3 (DLC3)
on the vehicle. The OBD scan tool or hand±held
tester also enables you to erase the DTCs and
check the freeze frame data and various forms of
engine data. (For operating instructions, see the
OBD scan tool's instruction book.)
DTCs include ISO controlled codes and manufac-
turer controlled codes. ISO controlled codes must
be set as prescribed by the ISO, while manufacturer
controlled codes can be set freely by the manufac-
turer within the prescribed limits (See DTC chart on
page 05±544).
The diagnosis system operates in the normal mode
during normal vehicle use. It also has a check (test)
mode for technicians to simulate malfunction symp-
toms and troubleshoot. Most DTCs use 2 trip detec-
tion logic* to prevent erroneous detection, and to
ensure a thorough malfunction detection. By
switching the ECM to the check mode using hand±
held tester when troubleshooting, a technician can
cause the CHK ENG to illuminate for a malfunction
that is only detected once or momentarily (Hand±
held tester only) (See step 3).