catalytic converter TOYOTA AVENSIS 2005 Service Service Manual

A78602
Reference (Sensor 2 System Diagram):Heated Oxygen Sensor
EFI Relay
Heater
Sensor OX1B
HT1BECM
From
Battery EFI Fuse
E2MREL
OX
HT
E1
+B
05–46
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0037 OXYGEN SENSOR HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 2)
DTC P0038 OXYGEN SENSOR HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 2)
CIRCUIT DESCRIPTION
Refer to DTC P0130 on page 05–74.
HINT:
The ECM provides a pulse width modulated control circuit to adjust current \
through the heater. The heated
oxygen sensor heater circuit uses a relay on the +B side of the circuit.
DTC No.DTC Detection ConditionTrouble Area
P0037Heated current is 0.25 A or less when heater operates
(1 trip detection logic)
 Open in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (sensor 2)
 EFI relay
 ECM
P0038Heater current exceeds 2 A when heater operates
(1 trip detection logic)
Short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (sensor 2)
 EFI relay
 ECM
HINT:
Sensor 1 refers to the sensor mounted in front of the Three–Way Catalytic Converter (TWC) and lo-
cated near the engine assembly.
Sensor 2 refers to the sensor mounted behind the TWC and located far fro\
m the engine assembly.
WIRING DIAGRAM
Refer to DTC P0130 on page 05–74.
05KNW–02

A78602
EFI RelayHeater
Sensor OX1A
HT1AECM
From
Battery EFI Fuse
E2
MREL
Reference (Sensor 1 System Diagram):
Heated Oxygen Sensor
OX
HT
E1
+B
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–43
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0031 OXYGEN SENSOR HEATER CONTROL
CIRCUIT LOW (BANK 1 SENSOR 1)
DTC P0032 OXYGEN SENSOR HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 1)
CIRCUIT DESCRIPTION
Refer to DTC P0130 on page 05–74.
HINT:
The ECM provides a pulse width modulated control circuit to adjust current \
through the heater. The heated
oxygen sensor heater circuit uses a relay on the +B side of the circuit.
DTC No.DTC Detection ConditionTrouble Area
P0031Heated current is 0.8 A or less when heater operates
(1 trip detection logic)
 Open or short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (sensor 1)
 EFI relay
 ECM
P0032Heated current exceeds 10 A when the heater operates
(1 trip detection logic)
Open or short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (sensor 1)
 EFI relay
 ECM
HINT:
Sensor 1 refers to the sensor mounted in front of the Three–Way Catalytic Converter (TWC) and lo-
cated near the engine assembly.
Sensor 2 refers to the sensor mounted behind the TWC and located far fro\
m the engine assembly.
WIRING DIAGRAM
Refer to DTC P0130 on page 05–74.
05KNV–02

05–30
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E) DTC No.
(See Page) Memory
*1
MIL
Trouble Area
Detection Item
P0327
( 05–132 )Knock Sensor 1 Circuit Low
Input (Bank 1 or Single Sensor)Short in knock sensor circuit
 Knock sensor
 ECM

P0328
( 05–132 )Knock Sensor 1 Circuit High
Input (Bank 1 or Single Sensor)Open in knock sensor circuit
 Knock sensor
 ECM

P0335
( 05–136 )Crankshaft Position Sensor ”A”
Circuit
Open or short in crankshaft position sensor circuit
 Crankshaft position sensor
 Sensor plate (crankshaft)
 ECM

P0339
( 05–136 )Crankshaft Position Sensor ”A”
Circuit IntermittentSame as DTC P0335
P0340
( 05–140 )Camshaft Position Sensor ”A”
Circuit (Bank 1 or Single Sensor)
Open or short in camshaft position sensor circuit
 Camshaft position sensor
 Camshaft timing pulley
 Jumped tooth of timing chain
 ECM

P0341
( 05–140 )Camshaft Position Sensor ”A”
Circuit Range/Performance
(Bank 1 or Single Sensor)
Same as DTC P0340
P0351
( 05–143 )Ignition Coil ”A” Primary/Second-
ary Circuit
Ignition system
 Open or short in IGF or IGT1 to 4 circuit from ignition coil with
igniter to ECM
 No. 1 to No. 4 ignition coil with igniter
 ECM

P0352
( 05–143 )Ignition Coil ”B” Primary/Second-
ary CircuitSame as DTC P0351
P0353
( 05–143 )Ignition Coil ”C” Primary/Second-
ary CircuitSame as DTC P0351
P0354
( 05–143 )Ignition Coil ”D” Primary/Second-
ary CircuitSame as DTC P0351
P0420 *4
( 05–150 )Catalyst System Efficiency Be-
low Threshold (Bank 1)
Gas leakage in exhaust system
 Heated oxygen sensor (sensor 1)
 Heated oxygen sensor (sensor 2)
 Three–way catalytic converter

P0443
( 05–155 )Evaporative Emission Control
System Purge Control Valve Cir-
cuit Open or short in EVAP VSV circuit
 EVAP VSV
 ECM

P0500
( 05–158 )Vehicle Speed Sensor ”A”
Open or short in speed sensor circuit
 Speed sensor
 Combination meter
 ECM
 Skid control ECU

P0504
( 05–161 )Brake Switch ”A”/”B” Correlation
Short in stop lamp switch signal circuit
 Stop lamp fuse
 Stop lamp switch
 ECM

P0505
( 05–165 )Idle Air Control System
Electronic throttle control system
 Air induction system
 PCV hose connection

P0560
( 05–167 )System VoltageOpen in backup power source circuit
 ECM
P0604
( 05–170 )Internal Control Module Random
Access Memory (RAM) ErrorECM
P0606
( 05–170 )ECM/PCM ProcessorECM

A82718
Signal Length
Time
Sensor
Output
Voltage
Heated Oxygen Sensor Signal Length:
A58686
Vehicle Speed
70 km/h
(44 mph)
Ignition Switch OFF 40 seconds
or more
Engine coolant temperature is more than 75
C (167 F)
20 seconds
or more 40 seconds
or more
40 seconds
or more
(g) (h)
Idling (e) (g)
(h) (g)
(h)
20 seconds
or more 20 seconds
or more
Once
Twice
At least 8 times
2 minutes
or more
(a), (b) and (c)
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–151
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)DTC No.
DTC Detecting ConditionTrouble Area
P0420
After engine and TWC are warmed up, and while vehicle is
driven within predetermined vehicle speed and engine speed
range:
Waveforms of heated oxygen sensor (sensor 2) frequently
fluctuates between rich and lean (2 trip detection logic)
Gas leakage in exhaust system
 Heated oxygen sensor (sensor 1)
 Heated oxygen sensor (sensor 2)
 Three–way catalytic converter (TWC)
CONFIRMATION DRIVING PATTERN
(a) Connect the intelligent tester II to the DLC3.
(b) Turn the ignition switch to ON and turn the intelligent tester ll ON.
(c) Switch the ECM from normal mode to check mode using the intelligent test\
er ll ( see page 05–20).
(d) Start the engine.
(e) Allow the engine to idle for 2 minutes.
(f) Warm up the engine until the engine coolant temperature reaches more than\
75 C (167 F).
(g) Drive the vehicle at 70 km/h (44 mph) or more for 40 seconds or more.
(h) Stop the vehicle and allow the engine to idle for 20 seconds or more.
(i) Repeat the steps (g) and (h) at least 8 times in one driving cycle.
HINT:
If a malfunction exists, the MIL will be illuminated during step (i).

–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–153
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
4 INSPECT HE ATED OXYGEN SENSOR(SENSOR 2) ( See page 05–100)
OK: During air–fuel ratio feedback, the oxygen sensor output fluctuat\
es between rich and lean.
NG REPLACE HEATED OXYGEN SENSOR
OK
REPLACE THREE–WAY CATALYTIC CONVERTER (BOTH FRONT AND REAR TWC)
NOTICE:
On the damaged bank, replace both the front and rear catalysts.
HINT:
Intelligent tester II only:
Malfunctioning areas can be found by performing the Active Test / A/F Control operation. The A/F Control
operation can determine if the heated oxygen sensor or other potential trouble ar\
eas are malfunctioning or
not.
(a) Perform the Active Test using the intelligent tester II.
HINT:
The A/F Control operation lowers the injection volume by 12.5 % or incre\
ases the injection volume by 25
%. (1) Connect the intelligent tester II to the DLC3.
(2) Start the engine and turn the intelligent tester II ON.
(3) Warm up the engine by running the engine at 2,500 rpm for approximately 3\
minutes.
(4) On the intelligent tester II, select the following menu items: Powertrain \
/ Engine and ECT / ActiveTest / A/F Control.
(5) Select the following monitor items: O2S B1 S1 and O2S B1 S2.
(6) Perform the A/F Control operation with the engine in an idling condition\
(press the right or left
button).
Result:
The heated oxygen sensor reacts in accordance with increases and decreases \
of the injection
volume:
+25 % → Rich output: More than 0.5 V
–12.5 % → Lean output: Less than 0.4 V
NOTICE:
Sensor 1 (front sensor) has an output delay of a few seconds. Sensor 2 (rea\
r sensor) has a maximum
output delay of approximately 20 seconds.

05KAK–01
– DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)05–209
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
PART AND SYSTEM NAME LIST
This reference list indicates the part names used in this manual along with their definitions.
Part and system nameDefinition
Toyota HCAC system, Hydrocarbon adsorptive Catalyst
(HCAC) system, HC adsorptive three–way catalystHC adsorptive three–way catalytic converter
Variable Valve Timing sensor, VVT sensorCamshaft position sensor
Variable valve timing system, VVT systemCamshaft timing control system
Camshaft timing oil control valve, Oil control valve OCV,
VVT, VSVCamshaft timing oil control valve
Variable timing and lift, VVTLCamshaft timing and lift control
Crankshaft position sensor ”A”Crankshaft position sensor
Engine speed sensorCrankshaft position sensor
THAIntake air temperature
Knock control moduleEngine knock control module
Knock sensorEngine knock sensor
Mass or volume air flow circuitMass air flow sensor circuit
Vacuum sensorManifold air pressure sensor
Internal control module, Control module, Engine control
ECU, PCMPower train control module
FC idleDeceleration fuel cut
Idle air control valveIdle speed control
VSV for CCV, Canister close valve VSV for canister controlEvaporative emissions canister vent valve
VSV for EVAP, Vacuum switching valve assembly No. 1,
EVAP VAV, Purge VSVEvaporative emissions canister purge valve
VSV for pressure switching valve, Bypass VSVEvaporative emission pressure switching valve
Vapor pressure sensor, EVAP pressure sensor, Evaporative
emission control system pressure sensorFuel tank pressure sensor
Charcoal canisterEvaporative emissions canister
ORVR systemOn–boad refueling vapor recovery system
Intake manifold runner controlIntake manifold tuning system
Intake manifold runner valve, IMRV, IACV (runner valve)Intake manifold tuning valve
Intake control VSVIntake manifold tuning solenoid valve
AFSAir fuel ratio sensor
O2 sensorHeater oxygen sensor
Oxygen sensor pumping current circuitOxygen sensor output signal
Oxygen sensor reference ground circuitOxygen sensor signal ground
Accel position sensorAccelerator pedal position sensor
Throttle actuator control motor, Actuator control motor, Elec-
tronic throttle motor, Throttle control motorElectronic throttle actuator
Electronic throttle control system, Throttle actuator control
systemElectronic throttle control system
Throttle/pedal position sensor, Throttle/pedal position switch,
Throttle position sensor/switchThrottle position sensor
Turbo press sensorTurbocharger pressure sensor
Turbo VSVTurbocharger pressure control solenoid valve
P/S pressure switchPower–steering pressure switch
VSV for ACMActive control engine mount
Speed sensor, Vehicle speed sensor ”A”, Speed sensor for
skid control ECUVehicle speed sensor
ATF temperature sensor, Trans. fluid temp. sensor, ATF
temperature sensor ”A”Transmission fluid temperature sensor
Electronic controlled automatic transmission, ECTElectronically controlled automatic
Intermediate shaft speed sensor ”A”Couter gear speed sensor