2005 TOYOTA AVENSIS heater

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

A93649
HT
+B
E1
OX Sensor 1Heated Oxygen Sensor Connector Component Side:
Front View
B16200
A18294
OX1A (+) E12
ECM Connector
HT1A (+)
E13
E2 (–)
E03
05–44
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the intelligent tester II. Freeze frame data record the engine condition when
malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was
moving or stationary, if the engine was warmed up or not, if the air–fuel ratio was lean or rich, and other data
from the time the malfunction occurred.
1 INSPECT HEATED OXYGEN SENSOR(HEATER RESISTANCE)
(a) Disconnect the H7 heated oxygen sensor connector.
(b) Measure the resistance between the terminals of the
heated oxygen sensor connector.
Standard (Sensor 1):
Tester ConnectionSpecified Condition
1 (HT) – 2 (+B)5 to 10 Ω at 20C (68F)
1 (HT) – 4 (E1)10 kΩ or higher
(c) Reconnect the heated oxygen sensor connector.
NG REPLACE HEATED OXYGEN SENSOR
OK
2 INSPECT EFI RELAY
(a) Remove the EFI relay from the engine room R/B.
(b) Check the EFI relay resistance.
Standard:
Tester ConnectionSpecified Condition
3 – 510 kΩ or higher
3 – 5Below 1 Ω
(Apply battery voltage to terminals 1 and 2)
(c) Reinstall the EFI relay.
NG REPLACE EFI RELAY
OK
3 INSPECT ECM(HT1A VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the applicable terminals of
the E12 and E13 ECM connectors.
Standard:
Tester ConnectionSpecified Condition
HT1A (E12–6) – E03 (E12–7)9 to 14 V
OX1A (E12–22) – E2 (E13–28)9 to 14 V
OK REPLACE ECM (See page 10–65 of Pub. No.
RM1018E AVENSIS)
NG

054JD–22
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–27
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Parameters listed in the chart may not be exactly the same as your readings due to\
factors such as the type
of instrument.
If a DTC is displayed during the DTC check in check mode, check the circui\
t for the DTC listed in the table
below. For details of each DTC, refer to the ’’See page’’ under the respective ’’DTC No.’’ in this chart.
DTC No.
(See Page)Detection ItemTrouble Area*1
MILMemory
P0010
( 05–34 )Camshaft Position ”A” Actuator
Circuit (Bank 1)Open or short in oil control valve circuit
 Oil control valve
 ECM

P0011
( 05–38 )Camshaft Position ”A” –Timing
Over–Advanced or System Per-
formance (Bank 1)Valve timing
 Oil control valve
 Camshaft timing gear assy
 ECM

P0012
( 05–38 )Camshaft Position ”A” –Timing
Over– Retarded (Bank 1)
Valve timing
 Oil control valve
 Camshaft timing gear assy
 ECM

P0016
( 05–42 )Crankshaft Position – Camshaft
Position Correlation (Bank 1
Sensor A)Mechanical system (Jumped tooth of timing chain or chain
stretched)
 ECM

P0031
( 05–43 )Oxygen Sensor Heater Control
Circuit Low (Bank 1 Sensor 1)
Open or short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (Sensor 1)
 EFI relay
 ECM

P0032
( 05–43 )Oxygen Sensor Heater Control
Circuit High (Bank 1 Sensor 1)
Open or short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (Sensor 1)
 EFI relay
 ECM

P0037
( 05–46 )Oxygen Sensor Heater Control
Circuit Low (Bank 1 Sensor 2)
Open in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (Sensor 2)
 EFI relay
 ECM

P0038
( 05–46 )Oxygen Sensor Heater Control
Circuit High (Bank 1 Sensor 2)
Short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (Sensor 2)
 EFI relay
 ECM

P0100
( 05–49 )Mass Air Flow Circuit Malfunc-
tionOpen or short in mass air flow meter circuit
 Mass air flow meter
 ECM

P0102
( 05–49 )Mass or Volume Air Flow Circuit
Low InputOpen in mass air flow meter circuit
 Mass air flow meter
 ECM

P0103
( 05–49 )Mass or Volume Air Flow Circuit
High InputShort in mass air flow meter circuit
 Mass air flow meter
 ECM

P0110
( 05–55 )Intake Air Temperature Circuit
Open or short in intake air temperature sensor circuit
 Intake air temperature sensor (built into mass air flow meter)
 ECM

P0112
( 05–55 )Intake Air Temperature Circuit
Low InputShort in intake air temperature sensor circuit
 Intake air temperature sensor (built into mass air flow meter)
 ECM

P0113
( 05–55 )Intake Air Temperature Circuit
High InputOpen in intake air temperature sensor circuit
 Intake air temperature sensor (built into mass air flow meter)
 ECM


05–28
–
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
P0115
( 05–60 )Engine Coolant Temperature Cir-
cuitOpen or short in engine coolant temperature sensor circuit
 Engine coolant temperature sensor
 ECM

P0116
( 05–65 )Engine Coolant Temperature Cir-
cuit Range/Performance Prob-
lem
Engine coolant temperature sensor
P0117
( 05–60 )Engine Coolant Temperature Cir-
cuit Low InputShort in engine coolant temperature sensor circuit
 Engine coolant temperature sensor
 ECM

P0118
( 05–60 )Engine Coolant Temperature Cir-
cuit High InputOpen in engine coolant temperature sensor circuit
 Engine coolant temperature sensor
 ECM

P0120
( 05–66 )Throttle/Pedal Position Sensor/
Switch ”A” CircuitThrottle position sensor (built into throttle body)
 ECM
P0121
( 05–73 )Throttle/Pedal Position Sensor/
Switch ”A” Circuit Range/Perfor-
mance Problem
Throttle position sensor (built into throttle body)
P0122
( 05–66 )Throttle/Pedal Position Sensor/
Switch ”A” Circuit Low Input
Throttle position sensor (built into throttle body)
 Short in VTA1 circuit
 Open in VC circuit
 ECM

P0123
( 05–66 )Throttle/Pedal Position Sensor/
Switch ”A” Circuit High Input
Throttle position sensor (built into throttle body)
 Open in VTA1 circuit
 Open in E2 circuit
 VC and VTA1 circuits are short–circuited
 ECM

P0130 *4
( 05–74 )Oxygen Sensor Circuit Malfunc-
tion (Bank 1 Sensor 1)
Open or short in heated oxygen sensor circuit
 Heated oxygen sensor (Sensor 1)
 Heated oxygen sensor heater (Sensor 1)
 EFI relay
 Air induction system
 Fuel pressure
 Injector
 ECM

P0133 *4
( 05–84 )Oxygen Sensor Circuit Slow Re-
sponse (Bank 1 Sensor 1)
Open or short in heated oxygen sensor circuit
 Heated oxygen sensor (Sensor 1)
 Heated oxygen sensor heater (Sensor 1)
 EFI relay
 Air induction system
 Fuel pressure
 Injector
 ECM

P0134
( 05–91 )Oxygen Sensor Circuit No Activ-
ity Detected (Bank 1 Sensor 1)
Open or short in heated oxygen sensor circuit
 Heated oxygen sensor (Sensor 1)
 PCV valve and hose
 EFI relay
 Air induction system
 Fuel pressure
 Injector
 Gas leakage in exhaust system
 ECM

P0136
( 05–100 )Oxygen Sensor Circuit Malfunc-
tion (Bank 1 Sensor 2)
Open or short in heated oxygen sensor circuit
 Heated oxygen sensor (sensor 2)
 Heated oxygen sensor heater (sensor 2)
 EFI relay


05–32
–
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
P2111
( 05–177 )Throttle Actuator Control System
– Stuck OpenThrottle actuator
 Throttle body assembly
 Throttle valve

P2112
( 05–177 )Throttle Actuator Control System
– Stuck ClosedSame as DTC P2111
P2118
( 05–179 )Throttle Actuator Control Motor
Current Range/PerformanceOpen in ETCS power source circuit
 ETCS fuse
 ECM

P2119
( 05–182 )Throttle Actuator Control Throttle
Body Range/PerformanceElectronic throttle control system
 ECM
P2120
( 05–184 )Throttle/Pedal Position Sensor/
Switch ”D” CircuitAccelerator pedal position sensor
 ECM
P2121
( 05–192 )Throttle/Pedal Position Sensor/
Switch ”D” Circuit Range/Perfor-
manceAccelerator pedal position sensor circuit
 Accelerator pedal position sensor
 ECM

P2122
( 05–184 )Throttle/Pedal Position Sensor/
Switch ”D” Circuit Low Input
Accelerator pedal position sensor
 Open in VCP1 circuit
 Open or ground short in VPA1 circuit
 ECM

P2123
( 05–184 )Throttle/Pedal Position Sensor/
Switch ”D” Circuit High InputAccelerator pedal position sensor
 Open in EPA circuit
 ECM

P2125
( 05–184 )Throttle/Pedal Position Sensor/
Switch ”E” CircuitAccelerator pedal position sensor
 ECM
P2127
( 05–184 )Throttle/Pedal Position Sensor/
Switch ”E” Circuit Low Input
Accelerator pedal position sensor
 Open in VCP2 circuit
 Open or ground short in VPA2 circuit
 ECM

P2128
( 05–184 )Throttle/Pedal Position Sensor/
Switch ”E” Circuit High InputAccelerator pedal position sensor
 Open in EPA2 circuit
 ECM

P2135
( 05–66 )Throttle/Pedal Position Sensor/
Switch ”A”/”B” Voltage Correla-
tionVTA1 and VTA2 circuits are short–circuited
 Throttle position sensor (built into throttle body)
 ECM

P2138
( 05–184 )Throttle/Pedal Position Sensor/
Switch ”D”/”E” Voltage Correla-
tionVPA1 and VPA2 circuits are short circuited
 Accelerator pedal position sensor
 ECM

P2195 *4
( 05–74 )Oxygen Sensor Signal Stuck
Lean (Bank 1 Sensor 1)
Open or short in heated oxygen sensor circuit
 Heated oxygen sensor (Sensor 1)
 Heated oxygen sensor heater (Sensor 1)
 EFI relay
 Air induction system
 Fuel pressure
 Injector
 ECM

P2196 *4
( 05–74 )Oxygen Sensor Signal Stuck
Rich (Bank 1 Sensor 1)Same as DTC P2195
P2716
( 05–286 )Pressure Control Solenoid ”D”
Electrical (Shift Solenoid SLT)Electronic control automatic transaxle
P2769
( 05–289 )Torque Converter Clutch Sole-
noid Circuit Low (Shift Solenoid
Valve SL)
Electronic control automatic transaxle

+25 %
–12.5 %
More than 0.5 V
Less than 0.4V
Case 1
Case 2
Case 3
Case 4
Output Voltage of Heated Oxygen
Sensor (sensor 1: front sensor)
Injection volume
Output voltage
Output Voltage of Heated Oxygen
Sensor (sensor 2: rear sensor)Main Suspect
Trouble Area
OK
+25 %
–12.5 %
More than 0.5 V
Less than 0.4V
Injection volume
Output voltage
+25 %
–12.5 %
More than 0.5 V
Less than 0.4V
Injection volume
Output voltage
Sensor 1: front sensor
(Sensor 1, heater, sensor 1
circuit)
+25 %
–12.5 %
More than 0.5 V
Less than 0.4V
Injection volume
Output voltage
+25 %
–12.5 %
Injection volume
Output voltage
NG
+25 %
–12.5 %
Injection volume
Output voltage
NG
+25 %
–12.5 %
Injection volume
Output voltage
NG
+25 %
–12.5 %
Injection volume
Output voltage
NGExtremely rich or lean actual
air–fuel ratio
(Injector, fuel pressure, gas
leakage in exhaust system,
etc.) OK
OK
OK
Almost no reaction

Sensor 2: rear sensor
(Sensor 2, heater, sensor 2
circuit)
Almost no reaction Almost no reactionAlmost no reaction
05–154
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
The following A/F Control procedure enables the technician to check and graph the voltage output of both
the heated oxygen sensors.
To display the graph, select the following menu items on the tester: View / Line Graph.

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

141UL–01
A93669
A60622
14–32–
ENGINE MECHANICAL CYLINDER HEAD GASKET (1ZZ–FE/3ZZ–FE)(From
February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
REPLACEMENT
1. DISCHARGE FUEL SYSTEM PRESSURE (See Pub. No. RM1018E on page 11–1)
2. REMOVE RADIATOR SUPPORT OPENING COVER (See page 14–9)
3. REMOVE ENGINE ROOM COVER SIDE (See page 14–9)
4. REMOVE FRONT WHEEL RH
5. REMOVE ENGINE UNDER COVER SUB–ASSY NO.1 (See page 14–9)
6. REMOVE ENGINE UNDER COVER RH (See page 14–9)
7. DRAIN ENGINE COOLANT (See page 16–5)
8. REMOVE CYLINDER HEAD COVER NO.2
(a) Remove the 2 nuts and 2 clips, then detach cylinder headcover No.2.
9. REMOVE AIR CLEANER HOSE NO.1
(a) Disconnect the VSV connector.
(b) Disconnect fuel vapor feed No. 1 hose from the VSV.
(c) Disconnect the fuel vapor feed hose from the VSV.
(d) Disconnect the ventilation hose from air cleaner hose No. 1.
(e) Loosen the 2 air cleaner hose clamp bolts, then remove the air cleaner h\
ose.
10. DISCONNECT WATER BY–PASS HOSE
(a) Disconnect the water by–pass hose from the throttle body.
11. DISCONNECT WATER BY–PASS HOSE NO.2
(a) Disconnect water by–pass hose No. 2 from the throttle body.
12. REMOVE EFI FUEL PIPE CLAMP (See Pub. No. RM1018E on page 11–11)
13. DISCONNECT FUEL TUBE SUB–ASSY (See Pub. No. RM1018E on page 11–11)
14. DISCONNECT UNION TO CONNECTOR TUBE HOSE
(a) Disconnect the union to connector tube hose from the hose to hose tube.
15. DISCONNECT RADIATOR HOSE INLET
(a) Disconnect the radiator hose inlet from the cylinder head.
16. DISCONNECT HEATER INLET WATER HOSE
(a) Disconnect the heater inlet water hose from the cylinder head. 17. REMOVE FAN AND GENERATOR V BELT
(a) Turn the V–ribbed belt tensioner clockwise slowly andloosen it. Remove the fan and generator V belt, then put
back the V–ribbed belt tensioner carefully.