2005 TOYOTA AVENSIS Heater switch

010B6±13
±
INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS01±21
AVENSIS REPAIR MANUAL (RM1018E)
HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS
GENERAL INFORMATION
There are many ECU controlled systems used in the AVENSIS. In general, ECU controlled system are con-
sidered to be very intricate and require a high level of technical knowledge an\
d expert skill to troubleshoot.
The fact is, however, that if you proceed by inspecting the circuits one by one, troubleshoo\
ting of these sys-
tems is not complex. If you have adequate understanding of the system and ba\
sic knowledge of electricity,
the problem can be accurately diagnosed and fixed. This manual is design\
ed based on the above principle
to help service technicians perform accurate and effective troubleshooting, and is compiled for the following
major ECU controlled systems:
The troubleshooting procedures are described on the following pages.
SystemPage
1. SFI System [1ZZ±FE, 3ZZ±FE]05±1
2. SFI System [1AZ±FE]05±143
3. SFI System [1AZ±FSE]05±290
4. ECD System [1CD±FTV]05±523
5. ABS with EBD System05±696
6. ABS with EBD & BA & TRC & VSC System05±752
7. Electronic Controlled Automatic Transmission [ECT] [U241 (1AZ±FE)]05±856
8. Electronic Controlled Automatic Transmission [ECT] [U241 (1AZ±FSE)]05±915
9. Electronic Controlled Automatic Transmission [ECT] [U341]05±980
10.Electronic Motor Power Steering System05±1042
11. Air Conditioning System05±1088
12.Combustion Type Power Heater System05±1161
13.Supplemental Restraint System05±1181
14.Audio System05±1393
15.Navigation System05±1435
16.Combination Meter05±1497
17.Power Door Lock Control System05±1534
18.Wireless Door Lock Control System05±1568
19.Key Reminder Warning System05±1586
20.Engine Immobiliser System05±1599
21.Theft Deterrent System05±1627
22.Multiplex Communication System05±1654
23.Cruise Control System05±1697
FOR USING HAND±HELD TESTER

Before using the tester, the tester's operator manual should be read thoroughly.

If the tester cannot communicate with the ECU controlled systems when you \
have connected the cable
of tester to the DLC3, turned the ignition switch ON and operated the test\
er, there is a problem on the
vehicle side or tester side.
(1) If the communication is normal when the tester is connected to another veh\
icle, inspect the diag-
nosis data link line (Bus
line) or ECU power circuit of the vehicle.
(2) If the communication is still impossible when the tester is connected to a\
nother vehicle, the prob- lem is probably in the tester itself, so perform the Self Test procedures outlined in the Tester Oper-
ator 's Manual.

0505J±04
05±16
±
DIAGNOSTICS SFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Parameters listed in the chart may not be exactly the same as your reading 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.
DTC No.
(See page)Detection ItemTrouble Area*1
CHK ENGMemory
P0100
(05±24)Mass Air Flow Circuit Malfunc-
tion
Open or short in mass air flow meter circuit

Mass air flow meter

ECM

P0110
(05±30)Intake Air Temperature Circuit
Malfunction
Open or short in intake air temp. sensor circuit

Intake air temp. sensor (built into mass air flow meter)

ECM

P0115
(05±34)Engine Coolant Temperature Cir-
cuit Malfunction
Open or short in engine coolant temperature sensor circuit

Engine coolant temperature sensor

ECM

P0116
(05±38)Engine Coolant Temperature Cir-
cuit Range/Performance Prob-
lem
Engine coolant temperature sensor

Thermostat
P0120
(05±39)Throttle Pedal Position Sensor/
Switch ºAº Circuit Malfunction
Open or short in throttle position sensor circuit

Throttle position sensor

ECM

P0121
(05±44)Throttle Pedal Position Sensor/
Switch ºAº Circuit Range/Perfor-
mance Problem

Throttle position sensor
P0125
(05±45)Insufficient Coolant Temp. for
Closed Loop Fuel Control

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

Air induction system

Fuel pressure

Injector

Gas leakage on exhaust system

ECM

P0130*3
(05±54)
Oxygen Sensor Circuit Malfunc-
tion (Bank 1 Sensor 1)

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

Air induction system

Fuel pressure

Injector

P0133*3
(05±60)
Oxygen Sensor Circuit Slow Re-
sponse (Bank 1 Sensor 1)

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

Air induction system

Fuel pressure

Injector

ECM

P0135
(05±65)Oxygen Sensor Heater Circuit
Malfunction (Bank 1 Sensor 1)
Open or short in heater circuit of heated oxygen sensor

Heated oxygen sensor heater

ECM

P0136
(05±54)Oxygen Sensor Circuit Malfunc-
tion (Bank 1 Sensor 2)
Open or short in heated oxygen sensor circuit

Heated oxygen sensor
P0141
(05±65)Oxygen Sensor Heater Circuit
Malfunction (Bank 1 Sensor 2)
Open or short in heater circuit of heated oxygen sensor

Heated oxygen sensor heater

ECM


+25 %
±12.5 %
More than 0.55 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)Mainly suspect
trouble area
OK
+25 %
±12.5 %
More than 0.55 V
Less than 0.4V
Injection volume
Output voltage
+25 %
±12.5 %
More than 0.55 V
Less than 0.4V
Injection volume
Output voltage
Sensor 1: front sensor
(sensor 1, heater, sensor 1
circuit)
+25 %
±12.5 %
More than 0.55 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 of the
actual air±fuel ratio
(Injector, fuel pressure, gas
leakage in exhaust system,
etc.) OK
OK
OK
No reaction
No reaction
No reaction No reaction

Sensor 2: rear sensor
(sensor 2, heater, sensor 2
circuit) 05±68
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
HINT:
Hand±held tester only:
Narrowing down the trouble area is possible by performing ACTIVE TEST of the following ºA/F CONTROLº
(heated oxygen sensor or other trouble areas can be distinguished).
(a) Perform ACTIVE TEST using the hand±held tester (A/F CONTROL).
HINT:
ºA/F CONTROLº is an ACTIVE TEST which changes the injection volume ±12.5 % or +25 %.
(1) Connect the hand±held tester to the DLC3 on the vehicle.
(2) Turn the ignition switch ON.
(3) Warm up the engine with the engine speed at 2,500 rpm for approximately 90 sec.
(4) Select the item ºDIAGNOSIS / OBD/MOBD / ACTIVE TEST / A/F CONTROLº.
(5) Perform ºA/F CONTROLº with the engine in an idle condition (press the right or left button).
Result:
Heated oxygen sensor reacts in accordance with increase and decrease of injection volume:
+25 %
rich output: More than 0.55 V
±12.5 %
lean output: Less than 0.4 V
NOTICE:
There is a few second delay in the sensor 1 (front sensor) output, and there is about 20 seconds delay
in the sensor 2 (rear sensor) output.

+25 %
±12.5 %
More than 0.55 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)Mainly suspect
trouble area
OK
+25 %
±12.5 %
More than 0.55 V
Less than 0.4V
Injection volume
Output voltage
+25 %
±12.5 %
More than 0.55 V
Less than 0.4V
Injection volume
Output voltage
Sensor 1: front sensor
(sensor 1, heater, sensor 1
circuit)
+25 %
±12.5 %
More than 0.55 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 of the
actual air±fuel ratio
(Injector, fuel pressure, gas
leakage in exhaust system,
etc.) OK
OK
OK
No reaction
No reaction
No reaction No reaction

Sensor 2: rear sensor
(sensor 2, heater, sensor 2
circuit)
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±47
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
HINT:
Hand±held tester only:
Narrowing down the trouble area is possible by performing ACTIVE TEST of the following ºA/F CONTROLº
(heated oxygen sensor or other trouble areas can be distinguished).
(a) Perform ACTIVE TEST by the hand±held tester (A/F CONTROL).
HINT:
ºA/F CONTROLº is an ACTIVE TEST which changes the injection volume ±12.5 % or +25 %.
(1) Connect the hand±held tester to the DLC3 on the vehicle.
(2) Turn the ignition switch ON.
(3) Warm up the engine with the engine speed at 2,500 rpm for approximately 90 sec.
(4) Select the item ºDIAGNOSIS / OBD/MOBD / ACTIVE TEST / A/F CONTROLº.
(5) Perform ºA/F CONTROLº with the engine in an idle condition (press the right or left button).
Result:
Heated oxygen sensor reacts in accordance with increase and decrease of injection volume:
+25 %
rich output: More than 0.55 V
±12.5 %
lean output: Less than 0.4 V
NOTICE:
There is a few second delay in the sensor 1 (front sensor) output, and there is about 20 seconds delay
in the sensor 2 (rear sensor)output.

05C6N±01
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
05±161
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 
P0010/39 *4 (05±169)Camshaft Position ºAº Actuator
Circuit (Bank 1)
Open or short in oil control valve (OCV) circuit

Oil control valve

ECM

P0011/59 *4
(05±174)Camshaft Position ºAº ±Timing
Over±Advanced or System Per-
formance (Bank 1)
Valve timing

Oil control valve (OCV)

Camshaft timing gear assy


P0012/59 *4
(05±174)Camshaft Position ºAº ±Timing
Over± Retarded (Bank 1)
Camshaft timing gear assy

ECM


P0016/18 *4
(05±181)Crankshaft Position ± Camshaft
Position Correlation (Bank 1
Sensor A)
Mechanical system (Timing chain has jumped a tooth, chain
stretched)

ECM


P0031/21
*2, *4
(05±182)Oxygen (A/F) Sensor Heater
Control Circuit Low (Bank 1 Sen-
sor 1)


P0032/21
*2, *4
(05±182)Oxygen (A/F) Sensor Heater
Control Circuit High (Bank 1
Sensor 1)

Open or short in heater circuit of A/F sensor

A/F sensor heater

P0051/28
*2, *4
(05±182)Oxygen (A/F) Sensor Heater
Control Circuit Low (Bank 2 Sen-
sor 1)
A/F sensor heater

A/F relay

ECM


P0052/28
*2, *4
(05±182)Oxygen (A/F) Sensor Heater
Control Circuit High (Bank 2
Sensor 1)


P0100/31
(05±186)Mass Air Flow Circuit
Ohti ifltiit

P0102/31(05±186)Mass or volume Air Flow Circuit
Low Input
Open or short in mass air flow meter circuit

Mass air flow meter

ECM

P0103/31
(05±186)Mass or volume Air Flow Circuit
High Input
ECM

P0110/24(05±194)Intake Air Temperature Circuit
O h ti itk it i it


P0112/24(05±194)Intake Air Temperature Circuit
Low Input
Open or short in intake air temp. sensor circuit

Intake air temp. sensor (built in mass air flow meter)

ECM


P0113/24
(05±194)Intake Air Temperature Circuit
High Input
ECM


P0115/22(05±199)Engine Coolant Temperature Cir-
cuit
Open or short in engine coolant temperature sensor circuit

P0117/22(05±199)Engine Coolant Temperature Cir-
cuit Low Input
Open or short in engine coolant temperature sensor circuit

Engine coolant temperature sensor

ECM

P0118/22
(05±199)Engine Coolant Temperature Cir-
cuit High Input
ECM

P0120/41 (05±204)Throttle/Pedal Position Sensor/
Switch ºAº Circuit
Throttle position sensor (built in throttle body)

ECM

P0122/41
(05±204)Throttle/Pedal Position Sensor/
Switch ºAº Circuit Low Input

Throttle position sensor (built in throttle body)

Short in VTA1 circuit

Open in VC circuit

ECM



05±162
±
DIAGNOSTICS SFI SYSTEM (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E) P0123/41
(05±204)
Throttle/Pedal Position Sensor/
Switch ºAº Circuit High Input

Throttle position sensor (built in throttle body)

Open in VTA1 circuit

open in E2 circuit

VC and VTA1 circuit are short±circuited

ECM


P0136/27 *4
(05±211)Oxygen Sensor Circuit Malfunc-
tion (Bank 1 Sensor 2)

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

Heated oxygen sensor heater

EFI relay


P0141/27 *4
(05±218)Oxygen Sensor Heater Circuit
malfunction (Bank 1 Sensor 2)

Open or short in heater circuit of heated oxygen sensor

Heated oxygen sensor heater

EFI relay

ECM


P0156/29 *4
(05±211)Oxygen Sensor Circuit Malfunc-
tion (Bank 2 Sensor 2)

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

Heated oxygen sensor heater

EFI relay


P0161/29 *4
(05±218)Oxygen Sensor Heater Circuit
(Bank 2 Sensor 2)

Open or short in heater circuit of heated oxygen sensor

Heated oxygen sensor heater

EFI relay

ECM


P0325/52
(05±222)Knock Sensor 1 Circuit (Bank 1
or Single Sensor)
Knock sensor 1

Knock sensor 1 (under±torqued or loose)

ECM

P0327/52
(05±222)Knock Sensor 1 Circuit Low
Input (Bank 1 or Single Sensor)
Short in knock sensor 1 circuit

Knock sensor 1

ECM

P0328/52
(05±222)Knock Sensor 1 Circuit High
Input (Bank 1 or Single Sensor)
Open in knock sensor 1 circuit

Knock sensor 1

ECM

P0335/12, 13
(05±226)Crankshaft Position Sensor ºAº
Circuit
Open or short in crankshaft position sensor circuit

Crankshaft position sensor
P0339/13
(05±226)Crankshaft Position Sensor ºAº
Circuit Intermittent
Crankshaft osition sensor

Signal plate (crankshaft)

ECM

P0340/12
(05±229)Camshaft Position Sensor ºAº
Circuit (Bank 1 or Single Sensor)
Open or short in camshaft position sensor circuit

Camshaft position sensor
P0341/12
(05±229)Camshaft Position Sensor ºAº
Circuit Range/Performance
(Bank 1 or Single Sensor)
Camshaft osition sensor

Camshaft timing pulley

Timing chain has jumped a tooth

ECM

P0351/14 *3
(05±232)Ignition Coil ºAº Primary/Sec-
ondary Circuit

Ignition system

P0352/15 *3(05±232)Ignition Coil ºBº Primary/Sec-
ondary Circuit
Ignition system

Open or short in IGF or IGT1 to 4 circuit from ignition coil with
igniter to ECM
P0353/14 *3
(05±232)Ignition Coil ºCº Primary/Sec-
ondary Circuit
igniter to ECM

No. 1 to No. 4 ignition coil with igniter

IG2 relay
P0354/15 *3
(05±232)Ignition Coil ºDº Primary/Sec-
ondary Circuit
ECM
P0500/42
(05±240)Vehicle Speed Sensor ºAº

Open or short in speed sensor circuit

Speed sensor

Combination meter

ECM

Skid control ECU

P0511/33
(05±243)Idle Air Control Circuit

Open or short in idle speed control (ISC) valve circuit

Idle speed control (ISC) valve is stuck or closed

A/C switch circuit

Air induction system

ECM

P0606/89
(05±247)ECM/PCM Processor
ECM

23
4 1
A79117
+B
HT
Bank 1
Sensor 2
Bank 2
Sensor 2 H8
H10
Heated Oxygen Sensor Connector
E1
OX
B16200
A18294
HT1B (+)HT2B (+)E01 (±)E13
E10
ECM Connector
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
05±219
AVENSIS REPAIR MANUAL (RM1018E)
1INSPECT HEATED OXYGEN SENSOR(HEATER RESISTANCE)
(a)Disconnect the heated oxygen sensor connector.
(b)Inspect the heated oxygen sensor.
Standard:
Symbols (Terminal No.)ConditionSpecified condition
HT (H8±1) ± +B (H8±2)20C (68 F)11 to 16

HT (H8±1) ± E1 (H8±4)
No Continuity
HT (H10±1) ± +B (H10±2)20C (68 F)11 to 16

HT (H10±1) ± E1 (H10±4)
No Continuity
NGREPLACE HEATED OXYGEN SENSOR
OK
2INSPECT EFI RELAY
(a)Remove the EFI relay from the engine room R/B.
(b)Inspect the EFI relay. Standard:
Terminal No.Specified condition
1 ± 2Continuity
No Continuity
3 ± 5Continuity
(Apply battery voltage terminals 1 and 2)
NGREPLACE EFI RELAY
OK
3INSPECT ECM(HT1B OR HT2B VOLTAGE)
(a)Turn the ignition switch ON.
(b)Measure the voltage between the applicable terminals of the E10 and E13 ECM connector.
Standard:
Symbols (Terminal No.)Specified condition
HT1B (E10±4) ± E01 (E13±7)9to14VHT2B (E10±3) ± E01 (E13±7)9 to 14 V
HINT:

The HT1B means the heated oxygen sensor bank 1 sen-
sor 2.

The HT2B means the heated oxygen sensor bank 2 sen-
sor 2.
OKCHECK AND REPLACE ECM (See page 01±32)
NG

05±310
±
DIAGNOSTICS SFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E) 


\f  
*
1
CHK ENG
 
 \b
P0110
(05±347)Intake Air Temperature Circuit

Open or short in intake air temperature sensor circuit

Intake air temperature sensor (built in mass air flow meter)

ECM

P0112
(05±347)Intake Air Temperature Circuit
Low Input
Short in intake air temperature sensor circuit

Intake air temperature sensor (built in mass air flow meter)

ECM

P0113
(05±347)Intake Air Temperature Circuit
High Input
Open in intake air temperature sensor circuit

Intake air temperature sensor (built in mass air flow meter)

ECM

P0115
(05±351)Engine Coolant Temperature Cir-
cuit
Open or short in engine coolant temperature sensor circuit

Engine coolant temperature sensor

ECM

P0116
(05±355)Engine Coolant Temperature Cir-
cuit Range/Performance Prob-
lem
Cooling system

Engine coolant temperature sensor

Thermostat

P0117
(05±351)Engine Coolant Temperature Cir-
cuit Low Input
Short in engine coolant temperature sensor circuit

Engine coolant temperature sensor

ECM

P0118
(05±351)Engine Coolant Temperature Cir-
cuit High Input
Open in engine coolant temperature sensor circuit

Engine coolant temperature sensor

ECM

P0120
(05±356)Throttle/Pedal Position Sensor/
Switch ºAº Circuit
Throttle position sensor (built in throttle body)

ECM
P0121
(05±362)Throttle/Pedal Position Sensor/
Switch ºAº Circuit Range/Perfor-
mance Problem

Throttle position sensor (built in throttle body)
P0122
(05±356)Throttle/Pedal Position Sensor/
Switch ºAº Circuit Low Input

Throttle position sensor (built in throttle body)

VTA1 circuit short

VC circuit open

ECM

P0123
(05±356)Throttle/Pedal Position Sensor/
Switch ºAº Circuit High Input

Throttle position sensor (built in throttle body)

VTA1 circuit open

E2 circuit open

VC and VTA1 circuit are short±circuited

ECM

P0130 *3
(05±363)
Oxygen Sensor Circuit (Bank 1
Sensor 1)

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

Heated oxygen sensor heater

EFI relay

Air induction system

Fuel pressure

Injector

ECM

P0133 *3
(05±374)
Oxygen Sensor Circuit Slow Re-
sponse (Bank 1 Sensor 1)

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

Heated oxygen sensor heater

EFI relay

Air induction system

Fuel pressure

Injector

ECM