2005 TOYOTA AVENSIS Service Repair Manual

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Page 665 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual 05±588
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0106MANIFOLD ABSOLUTE PRESSURE/ BAROMETRIC PRESSURE CIRCUIT RANGE/
PERFORMANCE PROBLEM
CIRCUIT DESCRIPTION
Refer to DT

Page 666 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A06532
1,900 4.5
1
13.3
100
kPa
mmHg
Air Pressure V
253.3
(3.9) (74.8) (in.Hg) 05±584
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0105 MANIFOLD ABSOLUTE
PRESSURE/BAROME

Page 667 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A81002
5V
W±R E13
3
2
1
VC
PIM
E2
T5
Manifold Absolute
Pressure Sensor
ECM
E2
PIM
VC
28 28 18
R±W
BR E12
E13
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
05±585
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DI

Page 668 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A66060
VC (+)
E2 (±)E13
ECM Connector
A66060
PIM (+)
E2 (±)
E12
ECM Connector
E13
05±586
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
2INSPECT ECM(VC VOLTAGE)
(a)Turn the i

Page 669 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A56992
E2
PIM
VC
T5
Wire Harness Side
Manifold Absolute
Pressure Sensor Connector
A81088
PIM
VC
E2E12ECM Connector
E13
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
05±587
AVENSIS REPAIR MANUAL (RM1018E)
4C

Page 670 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual
AB B+
Power Transistor
Platinum Hot Wire
(Heater)
Output
Voltage
Temperature
sensor
Platinum Hot Wire (Heater)
Temperature sensor
A53295
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
05±577
AVE

AB B+
Power Transistor
Platinum Hot Wire
(Heater)
Output
Voltage
Temperature
sensor
Platinum Hot Wire (Heater)
Temperature sensor
A53295
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
05±577
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0100 MASS OR VOLUME AIR FLOW CIRCUIT
DTC P0102 MASS OR VOLUME AIR FLOW CIRCUIT
LOW INPUT
DTC P0103 MASS OR VOLUME AIR FLOW CIRCUIT
HIGH INPUT
CIRCUIT DESCRIPTION
The mass air flow meter uses a platinum hot wire. The hot wire mass air flow meter consists of a platinum
hot wire, a temperature sensor and a control circuit installed in a plastic housing. The hot wire mass air flow
meter works on the principle that the hot wire and temperature sensor located in the intake air bypass of the
housing detect any changes in the intake air temperature.
The hot wire is maintained at the set temperature by controlling the current flow through the hot wire. This
current flow is then measured as the output voltage of the mass air flow meter.
The circuit is constructed so that the platinum hot wire and temperature sensor provide a bridge circuit, with
the power transistor controlled so that the potential of A and B remains equal to maintain the set temperature.
DTC No.DTC Detection ConditionTrouble Area
P0100
Open or short in mass air flow meter circuit for more than 3
sec. with engine speed 4,000 rpm or less (1 trip detection log-
ic)
Open or short in mass air flow meter circuit
P0102Open in mass air flow meter circuit for more than 3 sec. with
engine speed 4,000 rpm or less (1 trip detection logic)
Open or short in mass air flow meter circuit
Mass air flow meter
ECM
P0103Short in mass air flow meter circuit for more than 3 sec. with
engine speed 4,000 rpm or less (1 trip detection logic)
HINT:
After confirming DTC ºP0100, P0102 or P0103º, use the hand±held tester to confirm the mass air flow ratio
from the ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / MAFº.
Air Flow Value (gm/s)Malfunction
Approx. 0.0Mass air flow meter power source circuit open
VG circuit open or short
174.0 or moreEVG circuit open
05CPH±01

Page 671 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A76970
L±Y
3
4
A6
Mass Air Flow Meter
ECM
5 G
+B VG
E2G
From
EFI MAIN Relay B±W
VG
E12
EVG
24
32
E12
05±578
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
IN

Page 672 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A54396
+B (+)
Wire Harness Side
Mass Air Flow Meter Connector
A6
A66060
VG (+)
EVG (±)E12
ECM Connector
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
05±579
AVENSIS REPAIR MANUAL (RM1018E)
2INSPECT MASS AIR

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