Page 1777 of 5135
05±1698
±
DIAGNOSTICS CRUISE CONTROL SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
10TERMINAL OF ECM (See page 05±1707) 11 INDEMNIFICATION OF PROBLEM
12 REPAIR OR REPLACE
13 CONFIRMATION TEST
END
HINT:
Step 3, 6, 9, 13:
Diagnostic steps permit the use of the hand±held tester.
Page 1778 of 5135
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
05±1693
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1271 COMBINATION METER ECU
COMMUNICATION STOP
CIRCUIT DESCRIPTION
DTC B1271 is output when communication between the combination meter and integration relay stops for
more than 10 seconds.
DTC No.DTC Detection ConditionTrouble Area
B1271No communication from Combination meter ECU for more
than 10 secondsCombination meter assy (Combination meter ECU)
Wire harness
05C5T±01
Page 1779 of 5135
B67809
Battery113
31 MPX1P
Theft Warning ECU Assy
E10 18
H 22
J/C
+B
W±B*
5
T6 I14
MainW±R*
5
AIC1BEAN
(EFI)
B*
3
POWER
EARTH
3
Instrument Panel J/B Assy
(Integration Relay)
ECMCombination Meter Assy
(Combination Meter ECU)
E9 E923 20
C10
BEAN
(BODY) 14
C10 P±B P±B
BEAN
(SECURITY) 15
C10 P±L*
4
MPX2
MPX
20
C11
C1017 J11 J26 J10
J26F F
F
W±R*
6
W±R
6
6
12DOME
B±W IE4
IP14*
5
5*6
B±W
1
1 2
1A
B±G*
1,
2
B±G*1,
2B*3
3
1
1 4B 4A
W±B*6
A
J16
J/CJ17
J/C
IK
IO*
1,
2,
5
*1: 1AZ±FSE
*2: 1AZ±FE, 1ZZ±FE, 3ZZ±FE
*
3: 1CD±FTV
*
4: w/ Theft Deterrent System
*5: LHD
*
6: RHD *
1*2*3
Engine Room R/BFuse Block Assy
Engine Room J/B No. 4*1,
2Engine Room R/B No. 3*3
DCC
1
AA
W±B*
6
W±BA
J15
J/C
IL*
3,
5
05±1694
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
Page 1780 of 5135
B68156
C10
Combination Meter Assy
(Combination Meter ECU) Wire Harness Side
T6
Theft Warning ECU AssyE10
*1
ECM
E9
*2,
3
ECM
I14
Instrument Panel J/B Assy
(Integration Relay)
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
05±1695
AVENSIS REPAIR MANUAL (RM1018E)
1 CHECK RESISTANCE OF COMMUNICATION LINE
(a) Disconnect the C10, E10 or E9, T6 and I14 connectors.
(b) Check the resistance between wire harness side connec-
tors.
Standard:
Tester ConnectionSpecified Condition
*1
C10±13 (BEAN) (EFI) ±
E10±18 (MPX1)
*2
C10±13 (BEAN) (EFI) ±
E9±23 (MPX1)
*3
C10±13 (BEAN) (EFI) ±
E9±20 (MPX1)Below 1
C10±14 (BEAN) (BODY) ±
I14±22 (MPX2)
C10±15 (BEAN) (SECURITY) ±
T6±31 (MPX)
HINT:
*
1: 1AZ±FSE
*
2: 1AZ±FE, 1ZZ±FE, 3ZZ±FE
*
3: 1CD±FTV
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
Page 1781 of 5135
B67965
Wire Harness SideC11
Combination Meter Assy
(Combination Meter ECU)
B68158
Wire Harness SideC10
Combination Meter Assy
(Combination Meter ECU)
05±1696
±
DIAGNOSTICS MULTIPLEX COMMUNICATION SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
2 CHECK COMBINATION METER ASSY (COMBINATION METER ECU) (POWER SOURCE)
(a) Disconnect the C11 ECU connector.
(b) Check the voltage between the wire harness side con-
nector and the body ground.
Standard:
Tester ConnectionSpecified Condition
C11±20 (+B) ± Body ground10 to 14 V
NG REPAIR OR REPLACE HARNESS AND CONNECTOR
OK
3 CHECK COMBINATION METER ASSY (COMBINATION METER ECU) (GROUND)
(a) Disconnect the C10 ECU connector.
(b) Check the resistance between the wire harness side con-
nector and the body ground.
Standard:
Tester ConnectionSpecified Condition
C10±17 (POWER EARTH) ±
Body groundBelow 1
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE COMBINATION METER ASSY (COMBINATION METER ECU) (See page 05±1509)
Page 1782 of 5135
100FH±01
A778975 Claws
A77902
A77872
10±26
±
ENGINE CONTROL SYSTEM THROTTLE BODY ASSY(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
Removal & Installation and Disassembly & Reassembly
1.REMOVE ENGINE ROOM COVER SIDE
(a)Remove the retainer and 4 clips.
(b)Unfasten the 5 claws and remove the radiator support opening cover.
2.REMOVE RADIATOR SUPPORT OPENING COVER
(a)Remove the 2 clips, and then remove the engine room cover side.
3.DRAIN ENGINE COOLANT (See page 16±19)
4. REMOVE ENGINE COVER SUB±ASSY NO.1
(a) Remove the 2 nuts, and then remove the engine cover No. 1.
Page 1783 of 5135
A77873
(a)
(c)
(b)
(d)
(h)
(i)
(g)
(g)
(f)
(e)
Air cleaner clamp
(c)
A77874
± ENGINE CONTROL SYSTEMTHROTTLE BODY ASSY (1AZ±FE)
10±27
AVENSIS REPAIR MANUAL (RM1018E)
5. REMOVE AIR CLEANER CAP SUB±ASSY
(a) Disconnect the mass air flow meter connector.
(b) Disconnect the VSV connector.
(c) Remove the 2 wire harness clamps.
(d) Disconnect the ventilation hose.
(e) Disconnect the fuel vapor feed hose No. 1.
(f) Disconnect the fuel vapor feed hose N0. 2.
(g) Remove the fuel vapor feed hose No. 2 from 2 clamps of
the air cleaner hose.
(h) Lock the hose clamp as shown in the illustration.
(i) Raise the air cleaner clamp up, slide it to the air cleaner
cap.
(j) Remove the air cleaner cap together with air cleaner hose
No. 1.
6. SEPARATE ACCELERATOR CONTROL CABLE ASSY
(a) Loosen the nut and separate the accelerator control
cable.
Page 1784 of 5135
A77875
(a)
(b)
(c)
(d)
(e)
A81619
A77876
A77877
A77878
10±28
± ENGINE CONTROL SYSTEMTHROTTLE BODY ASSY (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
7. REMOVE THROTTLE BODY ASSY
(a) Disconnect the throttle position sensor connector.
(b) Disconnect the ISC valve connector.
(c) Disconnect the water by±pass hose No. 2.
(d) Disconnect the water by±pass hose.
(e) Remove the fuel tube from the fuel pipe support.
(f) Remove the 3 bolts, and then remove the fuel pipe sup-
port and the throttle body.
(g) Remove the gasket from the intake manifold.
8. REMOVE FUEL VAPOR FEED HOSE NO.2
(a) Remove the fuel vapor feed hose No. 2 from the throttle
body.
9. REMOVE ISC VALVE
(a) Remove the 3 screws, and then remove the ISC valve.
(b) Remove the gasket from the throttle body.
10. REMOVE THROTTLE POSITION SENSOR
(a) Remove the 2 screws, and then remove the throttle posi-
tion sensor.