heater TOYOTA AVENSIS 2005 Service Repair Manual

05–14
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E) Symbols (Terminals No.)
STD Voltage
Condition
Terminal Description
Wiring Color
VCPA (E9–26) – EPA (E9–28)B – Y
Power source of acceler-
ator pedal position sensor
(for VPA)
Ignition switch ON4.5 to 5.0 V
VCP2 (E9–27) – EPA2 (E9–29)B – Y
Power source of acceler-
ator pedal position sensor
(for VPA2)
Ignition switch ON4.5 to 5.0 V
VG (E13–30) – EVG (E13–29)G – L–YMass air flow meterIdling, Shift position P or N, A/C
switch OFF0.5 to 3.0 V
THA (E13–20) – E2 (E13–28)G–R – BRIntake air temperature
sensorIdling, Intake air temperature 20
C
(68
F)0.5 to 3.4 V
THW (E13–19) – E2 (E13–28)B–W – BREngine coolant tempera-
ture sensorIdling, Engine coolant temperature
80
 
\b0.2 to 1.0 V
#10 (E13–1) – E01 (E13–7)
#20 (E13–2) – E01 (E13–7)
#30 (E13–3) – E01 (E13–7)
#40 (E13–4) – E01 (E13–7)B–R – W–B
Y – W–B
W – W–B
B – W–B
InjectorIgnition switch ON9 to 14 V
#10 (E13–1) – E01 (E13–7)
#20 (E13–2) – E01 (E13–7)
#30 (E13–3) – E01 (E13–7)
#40 (E13–4) – E01 (E13–7)B–R – W–B Y – W–B
W – W–B
B – W–B
InjectorIdlingPulse generation
( See page 05– 118 )
IGT1 (E13–8) – E1 (E13–5)
IGT2 (E13–9) – E1 (E13–5)
IGT3 (E13–10) – E1 (E13–5)
IGT4 (E13–11) – E1 (E13–5)R–W – BR
P – BR
LG–B – BR
L–Y – BR
Ignition coil with igniter
(ignition signal)IdlingPulse generation
( See page 05–143 )
IGF (E13–24) – E1 (E13–5)W–R – BR
Ignition coil with igniter
(ignition confirmation sig-
nal)
Ignition switch ON4.5 to 5.5 V
IGF (E13–24) – E1 (E13–5)W–R – BR
Ignition coil with igniter
(ignition confirmation sig-
nal)
IdlingPulse generation
( See page 05–143 )
G2+ (E13–26) – NE– (E13–34)W – RCamshaft position sensorIdlingPulse generation
( See page 05–140 )
NE+ (E13–27) – NE– (E13–34)G – RCrankshaft position sen-
sorIdlingPulse generation
( See page 05–136 )
FC (E10–16) – E01 (E13–7)G–Y – W–BFuel pump controlIgnition switch ON9 to 14 V
M+ (E12–5) – E01 (E13–7)
M– (E12–4) – E01 (E13–7)B – W–B
W – W–BThrottle actuatorIdlingPulse generation
OX1A (E12–22) – E2 (E13–28)B – BRHeated oxygen sensor
Maintain engine speed at 2,500 rpm
for 2 minutes after warming up the
sensorPulse generation
( See page 05–74 )
OX1B (E10–23)
– E2– (E13–28)B – BRHeated oxygen sensor
Maintain engine speed at 2,500 rpm
for 2 minutes after warming up the
sensorPulse generation
( See page 05–100 )
HT1A (E12–6) – E03 (E12–7)
HT1B (E9–7) – E03 (E12–7)Y – W–B
P – W–BHeated oxygen sensor
heaterIdlingBelow 3.0 V
HT1A (E12–6) – E03 (E12–7)
HT1B (E9–7) – E03 (E12–7)Y – W–B
P – W–BHeated oxygen sensor
heaterIgnition switch ON9 to 14 V
KNK1 (E12–1) – EKNK (E12–2)B – WKnock sensorMaintain engine speed at 4,000 rpm
after warming up the enginePulse generation
( See page 05–132 )
OCV+ (E13–14)
– OCV– (E13–13)W–G – Y–BCamshaft timing oil con-
trol valve (OCV)Ignition switch ONPulse generation
( See page 05–34 )
EVP1 (E12–19) – E01 (E13–7)W–G – W–BEVAP VSVIgnition switch ON9 to 14 V
EVP1 (E12–19) – E01 (E13–7)W–G – W–BEVAP VSVIdlingPulse generation
STA (E13–12) – E1 (E13–5)B–Y – BRStarter signalShift position N, Ignition switch
START6.0 V or more

+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
05–108
– 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.
NOTICE:
If the vehicle is short of fuel, the air–fuel ratio becomes lean and the heated oxygen sensor DTCs will
be recorded, and the MIL then illuminates.
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.
A high heated oxygen sensor (sensor 1) voltage (0.5 V or more) could 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 be caused by a lean air–fuel mix-
ture. Check for conditions that would cause the engine to run lean.

A97090
A93649
+B HT
E1 Component Side:
Front View Heated Oxygen Sensor Connector
Sensor 1
OX
05–112
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
9 READ VALUE OF INTELLIGENT TESTER II(OUTPUT VOLTAGE OF HEATED
OXYGEN SENSOR)
(a) Connect the intelligent tester II to the DLC3.
(b) Start the engine and turn the intelligent tester II ON.
(c) Select the following menu items: Powertrain / Engine and ECT / Data List / O2S B1 S1.
(d) Warm up the heated oxygen sensor at the engine speed of 2,500 rpm for approximately 90 seconds.
(e) Read the output voltage of the heated oxygen sensor during engine idling.
Standard:
Fluctuates between less than 0.4 V and more than 0.5 V (see the following figure).
OK Go to step 17
NG
10 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:
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

A79114
Wire Harness Side:
Sensor 1H7
Heated Oxygen Sensor Connector
HT
OX
E1
Front View
A65746
HT1A
ECM Connector E12
OX1AE2 E13
A78602
Reference (Sensor 1 System Diagram):
Heated Oxygen Sensor
EFI Relay
Heater
Sensor
OX1A HT1AECM
From
Battery
EFI Fuse
E2
MREL OX HT
E1 +B
05–114
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
12 CHECK HARNESS AND CONNECTOR(HEATED OXYGEN SENSOR – ECM)
(a) Disconnect the H7 heated oxygen sensor connector.
(b) Disconnect the E12 and E13 ECM connectors.
(c) Check the resistance.
Standard (Check for open):
Tester ConnectionSpecified Condition
OX (H7–3) – OX1A (E12–22)Below 1 Ω
HT (H7–1) – HT1A (E12–6)Below 1 Ω
E1 (H7–4) – E2 (E13–28)Below 1 Ω
Standard (Check for short):
Tester ConnectionSpecified Condition
OX (H7–3) or OX1A (E12–22) – Body ground10 kΩ or higher
HT (H7–1) or HT1A (E12–6) – Body ground10 kΩ or higher
(d) Reconnect the heated oxygen sensor connector.
(e) Reconnect the ECM connector.
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
13 REPLACE HEATED OXYGEN SENSOR
GO

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

A93651
+B HT
E1 OX Component Side:
Front View
Heated Oxygen Sensor Connector
+B HT
E1 OX
w/ HID w/o HID
Sensor 2
B16200
A18294
HT1B (+)
E03 (–)
E12
E9
ECM Connector
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–47
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 H17 heated oxygen sensor connector.
(b) Measure the resistance between the terminals of the
heated oxygen sensor connector.
Standard:
Tester ConnectionSpecified Condition
With HID: 1 (HT) – 2 (+B)11 to 16 Ω at 20C (68F)
With HID: 1 (HT) – 4 (E1)No Continuity
Without HID: 2 (HT) – 1 (+B)11 to 16 Ω at 20C (68F)
Without HID: 2 (HT) – 3 (E1)No Continuity
(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 No. 4.
(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(HT1B VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the applicable terminals of
the E9 and E12 ECM connectors.
Standard:
Tester ConnectionSpecified Condition
HT1B (E9–7) – E03 (E12–7)9 to 14 V

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