2005 TOYOTA AVENSIS Circuit

A66053
Engine Room R/B No.4EFI Relay



A79066
Engine Room R/B No.4EFI No.1 Fuse
1
2
A54396Mass Air Flow Meter Connector
Wire Harness Side
+B
A6
A18294
EVG
ECM Connector E12
05±28
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
5CHECK HARNESS AND CONNECTOR(EFI RELAY ± MASS AIR FLOW METER)
(a)Remove the EFI relay from the engine room R/B No.4.
(b)Remove the EFI No.1 fuse from the engine room R/B No.4.
(c)Disconnect the mass air flow meter connector.
(d)Check for continuity between the wire harness side con- nectors.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
EFI relay (3) ± EFI No.1 fuse (1)ContinuityEFI No.1 fuse (2) ± +B (A6±1)Continuity
Standard (Check for short):
Symbols (Terminal No.)Specified condition
EFI relay (3) or EFI No.1 fuse (1) ± Body groundNocontinuityEFI No.1 fuse (2) or +B (A6±1) ± Body groundNo continuity
NOTICE:
Do not insert the tester leads hard in the procedure (c), the
holder may be damaged.
NGREPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK ECM POWER SOURCE CIRCUIT (See page 05±124)
6INSPECT ECM
(a)Check for continuity between the terminal of the E12 ECM connector and the body ground.
Standard:
Symbols (Terminal No.)Specified condition
EVG (E12±32) ± Body groundContinuity
NGCHECK AND REPLACE ECM (See page 01±32)
OK

0505L±04
05±22
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
When the malfunction code is not confirmed in the diagnostic trouble code check and the problem still can\
not be confirmed in the basic inspection, proceed to this problem symptoms \
tables and troubleshoot accord-
ing to the numbered order given below.
SymptomSuspect AreaSee page
Engine does not crank (Does not start)1. Starter and starter relay
2. Neutral start switch circuit*19±1

No initial combustion (Does not start)
1. ECM power source circuit
2. Ignition coil (w/ Igniter) circuit
3. Fuel pump control circuit
4. Fuel system05±124
05±103
05±131
11±1
No complete combustion (Does not start)
1. Fuel pump control circuit
2. Ignition coil (w/ Igniter) circuit
3. Fuel system05±131
05±103
11±1
Engine cranks normally (Difficult to start)
1. Starter signal circuit
2. ISC valve circuit
3. Fuel pump control circuit
4. Ignition coil (w/ Igniter)
5. Spark plug
6. Compression
7. Fuel system05±135
05±100
05±131
05±10318±3
14±111±1
Cold engine (Difficult to start)
1. Starter signal circuit
2. ISC valve circuit
3. Fuel pump control circuit
4. Fuel system
5. Ignition coil (w/ Igniter)
6. Spark plug05±135
05±100
05±131 11±1
05±103 18±3
Hot engine (Difficult to start)
1. Starter signal circuit
2. ISC valve circuit
3. Fuel pump control circuit
4. Fuel system
5. Ignition coil (w/ Igniter)
6. Spark plug05±135
05±100
05±131 11±1
05±103 18±3
Incorrect first idle (Poor idling)1. ISC valve circuit05±100
High engine idle speed (Poor idling)
1. ISC valve circuit
2. ECM power source circuit
3. Neutral start switch circuit*05±100
05±124

Low engine idle speed (Poor idling)
1. ISC valve circuit
2. Neutral start switch circuit*
3. Fuel pump control circuit
4. Fuel system05±100

05±131 11±1
Rough idling (Poor idling)
1. ISC valve circuit
2. ECM power source circuit
3. Fuel pump control circuit05±100
05±124
05±131
Hunting (Poor idling)
1. ISC valve circuit
2. ECM power source circuit
3. Fuel pump control circuit05±100
05±124
05±131
Hesitation/Poor acceleration (Poor drivability)
1. Fuel system
2. Fuel pump control circuit
3. Ignition coil (w/ Igniter) circuit11±1
05±131
05±103
Muffler explosion, after fire (Poor drivability)
1. Ignition coil (w/ Igniter) circuit
2. Spark plug
3. Fuel system05±103 18±3
11±1
Surging (Poor drivability)
1. Fuel pump control circuit
2. Spark plug
3. Fuel system05±131 18±3
11±1

±
DIAGNOSTICS SFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±23
AVENSIS REPAIR MANUAL (RM1018E)
Engine stall (Soon after starting)
1. Fuel pump control circuit
2. ISC valve circuit05±131
05±100
Engine stall (After accelerator pedal released)
1. Injector circuit
2. ISC valve circuit
3. ECM11±8
05±100
05±20
Engine stall (When shifting from N to D)1. Neutral start switch circuit
2. ISC valve circuit

05±100
*: A/T only.

05B3M±03
A79104
Fuel Pump
Circuit Opening Relay
ECM
DLC3
Camshaft Position
Sensor
Engine Coolant
Temperature Sensor
Camshaft Timig OIL
Control Valve Assy
Crankshaft
Position Sensor
Knock Sensor
Mass Air Flow Meter Assy
Heated Oxygen Sensor
(Bank 1 Sensor 1)
Engine Room R/B No.1
Heated Oxygen Sensor
(Bank 1 Sensor 2)
Engine Room R/B No.4
Ignition Coil and Igniter
Injector
Power Steering Oil
Pressure Switch
Idle Speed Control
Valve Assy
Throttle Position Sensor
Vacuum Switching Valve
(for ISC)
VSV for EVAP
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±19
AVENSIS REPAIR MANUAL (RM1018E)
LOCATION

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


±
DIAGNOSTICS SFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±17
AVENSIS REPAIR MANUAL (RM1018E)P0171*
3
(05±67)
System too Lean (Fuel Trim)
(Bank1)


Air induction system

Injector blockage

PCV hose

Mass air flow meter

Engine coolant temperature sensor

Fuel pressure

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

ECM

P0172*3
(05±67)
System too Rich (Fuel Trim)
(Bank1)

Injector leak, blockage

Mass air flow meter

Engine coolant temperature sensor

Ignition system

Fuel pressure

Open or short in heated oxygen sensor circuit

Gas leakage in exhaust system

Heated oxygen sensor

ECM

P0300*3
(05±73)
Random/Multiple Cylinder Misfire
Detected
Open or short in engine wire

Connector connection
Vac m hose connectionP0301*3
(05±73)Cylinder 1 Misfire Detected

Vacuum hose connection

PCV hose

Ignition system
P0302*3
(05±73)Cylinder 2 Misfire Detected

Injector

Fuel pressure

Mass air flow meter

P0303*3
(05±73)Cylinder 3 Misfire Detected

Mass air flow meter

Engine coolant temperature sensor

Compression pressure

Valve clearance
P0304*3
(05±73)Cylinder 4 Misfire Detected

Valve clearance

Valve timing

ECM
P0325
(05±81)Knock Sensor 1 Circuit Malfunc-
tion (Bank 1)
Open or short in knock sensor circuit

Knock sensor (under±torqued or loose)

ECM

P0335
(05±84)Crankshaft Position Sensor ºAº
Circuit Malfunction

Open or short in crankshaft position sensor circuit

Crankshaft position sensor

Crank angle sensor plate

ECM

P0340
(05±88)Camshaft Position Sensor Circuit
Malfunction

Open or short in camshaft position sensor circuit

Camshaft position sensor

Intake camshaft

Timing chain has jumped a tooth

ECM

P0420*3
(05±91)
Catalyst System Efficiency Be-
low Threshold (Bank 1)

Gas leakage in exhaust system

Heated oxygen sensor

Three±way catalytic converter

ECM

P0443
(05±94)Evaporative Emission Control
System Purge Control Vent Cir-
cuit Malfunction
Open or short in VSV for EVAP circuit

VSV for EVAP

ECM

P0500
(05±98)Vehicle Speed Sensor Malfunc-
tion

Open or short in speed sensor circuit

Speed sensor

Combination meter

ECM

Skid control ECU


05±18
±
DIAGNOSTICS SFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E) P0505*
3
(05±100)Idle Control System Malfunction


Open or short in ISC valve circuit

ISC valve is stuck or closed

PCV hose

A/C switch circuit

Air induction system

ECM

P1300
(05±103)Igniter Circuit Malfunction (No. 1)

Ignition system

Open or short in IGF or IGT1 circuit from No. 1 ignition coil
with igniter to ECM

No. 1 ignition coil with igniter

ECM

P1305
(05±103)Igniter Circuit Malfunction (No. 2)

Ignition system

Open or short in IGF or IGT2 circuit from No. 2 ignition coil
with igniter to ECM

No. 2 ignition coil with igniter

ECM

P1310
(05±103)Igniter Circuit Malfunction (No. 3)

Ignition system

Open or short in IGF or IGT3 circuit from No. 3 ignition coil
with igniter to ECM

No. 3 ignition coil with igniter

ECM

P1315
(05±103)Igniter Circuit Malfunction (No. 4)

Ignition system

Open or short in IGF or IGT4 circuit from No. 4 ignition coil
with igniter to ECM

No. 4 ignition coil with igniter

ECM

P1335
(05±84)Crankshaft Position Sensor Cir-
cuit Malfunction (During engine
running)
Open or short in crankshaft position sensor circuit

Crankshaft position sensor

Crank angle sensor plate

ECM


P1346
(05±111)VVT Sensor/Camshaft Position
Sensor Circuit Range/Perfor-
mance Problem (Bank 1)
Mechanical system (Timing chain has janped a tooth, chain
stretched)

ECM

P1349
(05±112)VVT System Malfunction (Bank
1)

Valve timing

OCV

VVT controller assembly

ECM

P1520*2
(05±115)
Stop Light Switch Circuit Mal-
function
Open or short in stop light switch signal circuit

Stop light switch

ECM

P1600
(05±119)ECM BATT Malfunction
Open in back up power source circuit

ECM
P1656
(05±122)OCV Circuit Malfunction (Bank
1)
Open or short in OCV circuit

OCV

ECM

*1:  ... CHK ENG is illuminated.
... CHK ENG is not illuminated.
*
2: Only for A/T models.
*
3: For European spec. only

05±2
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
9SYMPTOM SIMULATION
10DTC CHECK (See page 05±5)
AMalfunction code
BNo code
B GO TO STEP 12
A
11DTC CHART (See page 05±16)
GO TO STEP 14
12BASIC INSPECTION (See page 05±5)
AWrong parts not confirmed
BWrong parts confirmed
B GO TO STEP 17
A
13PROBLEM SYMPTOMS TABLE (See page 05±22)
AWrong circuit confirmed
BWrong parts confirmed
B GO TO STEP 17
A
14CHECK ECM POWER SOURCE CIRCUIT (See page 05±124)
15 CIRCUIT INSPECTION
AMalfunction not confirmed
BMalfunction confirmed
B GO TO STEP 18
A