2005 TOYOTA AVENSIS Service Repair Manual

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TOYOTA AVENSIS 2005  Service Repair Manual 05±394
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL   (RM1018E)
DTC P0171 SYSTEM TOO LEAN (BANK 1)
DTC P0172 SYSTEM TOO RICH (BANK 1)
DTC P0174 SYSTEM TOO LEAN (BANK 2)
DTC P0175 SYSTEM

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TOYOTA AVENSIS 2005  Service Repair Manual ±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±395
AVENSIS REPAIR MANUAL   (RM1018E)
If the total of the short±term fuel trim value and long±term fuel tri\
m value is within   25 % (Engine cool-
ant temp

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TOYOTA AVENSIS 2005  Service Repair Manual +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 oxy

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TOYOTA AVENSIS 2005  Service Repair Manual ±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±397
AVENSIS REPAIR MANUAL   (RM1018E)
1CHECK OTHER DTC OUTPUT(IN ADDITION TO DTC P0171, P0172, P0174
AND/OR P0175)
(a)Read the DTC using the hand±held tester.

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TOYOTA AVENSIS 2005  Service Repair Manual A60548
32 1 4 5
±20 0 20 40 60 80 100 0.1 0.2 0.3 0.51 2 3 5 10 20 30
TEMPERATUREC(F)
RESISTANCE k
(±4) (32) (80) (140)(104) (212)(176)
Air
VG
E2G+B
THA E2
Acceptable
05±398
± DIAGNOSTICSSFI SY

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TOYOTA AVENSIS 2005  Service Repair Manual 
3020
10
5
3
02040
0.1 1
0.3 0.2
0.5 2
6080100
±20
(±4)(104)(140)(176) (32)(68)(212)
30
20
10
5
3
02040
0.1 1
0.3 0.2
0.5 2
6080100
±20
(±4)(104)(140)(176) (32)(68)(212)
A8

Page 535 of 5135

TOYOTA AVENSIS 2005  Service Repair Manual 05±400
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL   (RM1018E)
9CHECK FOR EXHAUST GAS LEAKAGE
NGREPAIR OR REPLACE EXHAUST GAS LEAKAGE POINT (See page 15±6)
OK
10 CONFIRM IF ANY MISFIRI

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TOYOTA AVENSIS 2005  Service Repair Manual P18349
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±401
AVENSIS REPAIR MANUAL   (RM1018E)
14READ VALUE OF HAND±HELD TESTER(OUTPUT VOLTAGE OF HEATED OXYGEN
SENSOR (BANK 1, 2 SENSOR 1))
(a)Warm up the heate