2005 TOYOTA AVENSIS diagnostic

05±472
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand±held tester. Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, it is useful for determi\
ning whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lea\
n or rich, etc. at the time of the mal-
function.
1READ VALUE OF HAND±HELD TESTER(STARTER SIGNAL)
(a)Connect the hand±held tester to the DLC3.
(b)Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(c)Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / STARTER SIGº and read its value dis- played on the hand±held tester.
Result:
Ignition Switch PositionONSTART
STA SignalOFFON
OKCHECK AND REPLACE ECM (See page 01±32)
NG
2INSPECT PARK/NEUTRAL POSITION SWITCH ASSY
(a)Inspect the park/neutral position switch (A/T) (See page 05±938). NGREPLACE PARK/NEUTRAL POSITION SWITCHASSY (See page 40±8) (GO TO NEXT STEP 3 AF-
TER THE REPLACEMENT)
OK
3READ VALUE OF HAND±HELD TESTER(STARTER SIGNAL)
(a)Connect the hand±held tester to the DLC3.
(b)Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(c)Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / STARTER SIGº and read its value dis- played on the hand±held tester.
Result:
Ignition Switch PositionONSTART
STA SignalOFFON
OKSYSTEM OK
NG
4INSPECT IGNITION OR STARTER SWITCH ASSY (See page 80±2)
NG REPLACE IGNITION OR STARTER SWITCH ASSY (GO TO NEXT STEP 5 AFTER THE RE-
PLACEMENT)
OK

± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±473
AVENSIS REPAIR MANUAL (RM1018E)
5 READ VALUE OF HAND±HELD TESTER(STARTER SIGNAL)
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON and push the hand±held tester main switch ON.
(c) Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / STARTER SIGº and read its value dis-
played on the hand±held tester.
Result:
Ignition Switch PositionONSTART
STA SignalOFFON
OK SYSTEM OK
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR

05±470
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0604INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR
DTCP0606ECM/PCM PROCESSOR
DTCP0607CONTROL MODULE PERFORMANCE
DTCP0657ACTUATOR SUPPLY VOLTAGE CIRCUIT/OPEN
CIRCUIT DESCRIPTION
DTC No.DTC Detection ConditionTrouble Area
P0604
P0606
P0607
P0657
ECM inside error
ECM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand±held tester. Freeze frame data records the engine conditions when
a malfunction is detected, when troubleshooting it is useful for determi\
ning whether the vehicle was running
or stopped, the engine warmed up or not, the air±fuel ratio lean or ric\
h, etc. at the time of the malfunction.
REPAIR OR REPLACE ECM (See page 01±32)
05CJA±01

A76869
Engine Room J/B No. 1 and
Engine Room R/B No. 1
E9
E11 B±GECM
B±Y
BATT
Battery FL MAINEFI
1 4B1
BR
EEE1 3
BR 1A
B±GEngine Room
J/B No. 4 1 4A2 1 1
1IE37
IO17
(LHD)(RHD)B±Y
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±467
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0560 SYSTEM VOLTAGE
CIRCUIT DESCRIPTION
While the ignition switch is OFF, the battery positive voltage is supplied to terminal BATT of the ECM for the
DTCs memory and air±fuel ratio adaptive control value memory, etc.
DTC No.DTC Detection ConditionTrouble Area
P0560Open in back±up power source circuit
Open in back±up power source circuit

ECM
HINT:
If DTC P0560 is present, the ECM is unable to store other DTCs.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand±held tester. Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lean or rich, etc. at the time of the mal-
function.
05CK3±01

A66054
EFI Fuse
Engine Room R/B No. 1
A67446
BATT (+)
E9E11
E1 (±)ECM Connector
05±468
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
1CHECK FUSE(EFI FUSE)
(a)Remove the EFI fuse from the engine room R/B No. 1.
(b)Check for continuity in the EFI fuse. Standard: Continuity
NGCHECK FOR SHORT IN ALL HARNESS AND COMPONENTS CONNECTED EFI FUSE
OK
2INSPECT ECM(BATT VOLTAGE)
(a)Measure the voltage between the specified terminals of the E9 and E11 ECM connectors.
Standard:
Symbols (Terminal No.)Specified condition
BATT (E9±3) ± E1 (E11±1)9 to 14 V
NGGo to step 3
OK
CHECK AND REPLACE ECM (See page 01±32)


A79078
Engine Room R/B No. 1
EFI Fuse
2
1
A67445
BATT
E9
ECM Connector
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±469
AVENSIS REPAIR MANUAL (RM1018E)
3 CHECK HARNESS AND CONNECTOR(ECM ± EFI FUSE, EFI FUSE ± BATTERY)
(a) Check the harness and connector between the EFI fuse
and ECM.
(1) Remove the EFI fuse from the engine room R/B
No.1.
(2) Disconnect the E9 ECM connector.
(3) Check for continuity between the wire harness side
connectors.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
EFI fuse (2) ± BATT (E9±3)Continuity
Standard (Check for short):
Symbols (Terminal No.)Specified condition
EFI fuse (2) or BATT (E9±3) ± Body groundNo continuity
(b) Check the harness and connector between the EFI fuse
and battery.
(1) Remove the EFI fuse from the engine room R/B
No.1.
(2) Disconnect the battery positive terminal.
(3) Check for continuity between the wire harness side
connectors.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
Battery positive terminal ± EFI fuse (1)Continuity
Standard (Check for short):
Symbols (Terminal No.)Specified condition
Battery positive terminal or EFI fuse (1) ± Body groundNo continuity
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
CHECK AND REPLACE ENGINE ROOM RELAY BLOCK

A81711
ECMManifold Absolute
Pressure Sensor
Brake Booster
Air Cleaner Case
Throttle
Valve
To Cylinder
Intake Manifold Check ValveBrake Booster
Pressure Sensor
05±462
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0556BRAKE BOOSTER PRESSURE SENSOR CIRCUIT RANGE/PERFORMANCE
CIRCUIT DESCRIPTION
Refer to DTC P0555 on page 05±459.
DTC No.DTC Detection ConditionTrouble Area
P0556
When either one of the following conditions (a), (b), (c) or (d)\
is
satisfied (1 trip detection logic):
(a) If pressure inside the intake manifold is low, the brake
booster internal pressure is 38 kPa (285 mmHg, 11.2
in.Hg) or more higher than the intake manifold internal
pressure and this condition remains for more than 10
sec. (Pressure leaks caused by hose disconnection, etc).
(b) Pressure inside the brake booster stays low or at fixed lev- el, despite the vehicle has driven and stopped 10 times
(Vacuum stuck caused by hose clogged, etc).
(c) While the brake pedal is released, the pressure inside the brake booster is 32 kPa (240 mmHg, 9.4 in.Hg) or more
higher than the intake manifold internal pressure and this
condition remains for more than 1 sec. (Pressure leaks).
(d) After running the engine for more than 100 sec. with the brake pedal released and the negative pressure (vacuum)
has accumulated in the brake booster, the following two
conditions are satisfied despite depressing the brake
pedal for more than 1 sec. (Vacuum stuck):

Internal pressure of the brake booster does not increase

Internal pressure of the brake booster is 32 kPa (240 mmHg,
9.4 in.Hg) or more lower than the internal pressure of the
intake manifold

Vacuum hose (between the brake booster and intake man-
ifold, the brake booster and brake booster pressure sensor,
and the intake manifold and manifold absolute pressure
sensor)

Open or short in brake booster pressure sensor circuit

Brake booster pressure sensor

Manifold absolute pressure sensor

Brake booster

Open or short in stop light switch circuit

Stop light switch

ECM
WIRING DIAGRAM
Refer to DTC P0555 on page 05±459.
05CKO±01

±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±463
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using
\b\b
\b 
\f
reeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, it is useful for determi\
ning whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lea\
n or rich, etc. at the time of the mal-
function.
1CHECK OTHER DTC OUTPUT(IN ADDITION TO P0556)
(a)Read the DTC using the hand±held tester. Result :
DisplayProceed to
Only ºP0556º is output.A
ºP0556º and other DTCs are output.B
HINT:
If any other codes besides ºP0556º are output, perform the troublesh\
ooting for those DTCs first.
BGO TO RELEVANT DTC CHART(See page 05±309)
A
2 READ VALUE OF HAND±HELD TESTER(INTAKE MANIFOLD ABSOLUTE PRESSURE)
(a) Connect the hand±held tester to the DLC3.
(b) Warm up the engine.
(c) Push the hand±held tester main switch ON.
(d) Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / MAPº and read its value displayed on
the hand±held tester with the shift lever is the ºNº position.
Standard :
ConditionIntake Manifold Absolute Pressure
Ignition switch ON (do not start engine)70 to 110 kPa (525 to 825 mmHg, 20.7 to 32.5 in.Hg)
Running without load (2,500 rpm)20 to 35 kPa (150 to 263 mmHg, 5.9 to 10.4 in.Hg)
NG Go to step 7
OK
3 READ VALUE OF HAND±HELD TESTER(STOP LIGHT SWITCH)
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(c) Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / STOP LIGHT SWº and read its value displayed on the hand±held tester.
Result :
Brake PedalSTP Signal
DepressedON
ReleasedOFF