2001 TOYOTA AVALON air condition
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B04941
- DIAGNOSTICSENGINE
DI-1 1
167 Author: Date:
2001 AVALON (RM808U)
OK
8 Check for spark.
PREPARATION:
(a) Remove the ignition coil from the spark plug.
(b) Remove the spark plug.
(c) Install the spark plug to the ignition coil.
(d) Disconnect the injector connector.
(e) Be sure to ground the screw of the spark plug securely.
CHECK:
Check if spark occurs while the engine is being cranked.
NOTICE:
Do not crash the electrode gap.
To prevent excess fuel being injected from the injec-
tors during this test, don't crank the engine for more
than 5 - 10 seconds at a time.
NG Proceed to page IG-1, and continue to trouble-
shoot.
OK
Proceed to problem symptoms table on page
DI-22.
7. ENGINE OPERATING CONDITION
NOTICE:
The values given below for ºNormal Conditionº are representative values, so a vehicle may still be
normal even if its value varies differ from those listed here. So do not decide whether a part is faulty
or not solely according to the ºNormal Conditionº here.
(a) CARB mandated signals.
TOYOTA hand-held tester displayMeasurement ItemNormal Condition*
FUEL SYS #1
Fuel System Bank 1
OPEN: Air-fuel ratio feedback stopped
CLOSED: Air-fuel ratio feedback operating
Idling after warming up: CLOSED
FUEL SYS #2
Fuel System Bank 2
OPEN: Air-fuel ratio feedback stopped
CLOSED: Air-fuel ratio feedback operating
Idling after warming up: CLOSED
CALC LOADCalculator Load: Current intake air volume as a
proportion of max. intake air volumeIdling: 13.1 - 18.7 %
Racing without load (2,500rpm): 11.7 - 17.3 %
COOLANT TEMPEngine Coolant Temp. Sensor ValueAfter warming up: 80 - 95°C (176 - 203°F)
SHORT FT #1Short-term Fuel Trim Bank 10 ± 20 %
LONG FT #1Long-term Fuel Trim Bank 10 ± 20 %
Page 1046 of 1897
DI-12
- DIAGNOSTICSENGINE
168 Author: Date:
2001 AVALON (RM808U)SHORT FT #2
Short-term Fuel Trim Bank 20 ± 20 %
LONG FT #2Long-term Fuel Trim Bank 20 ± 20 %
ENGINE SPDEngine SpeedIdling: 650 - 750 rpm
VEHICLE SPDVehicle SpeedVehicle stopped: 0 km/h (0 mph)
IGN ADVANCEIgnition Advance: Ignition Timing of Cylinder No.1Idling: BTDC 10 - 25.0°
INTAKE AIRIntake Air Temp. Sensor ValueEquivalent to Ambient Temp.
MAFAir Flow Rate Through Mass Air Flow Meter
Idling: 3.3 - 4.7 gm/sec.
Racing without load (2,500 rpm):
10.4 - 15.4 gm/sec.
THROTTLE POSVoltage Output of Throttle Position Sensor Calcu-
lated as a percentage: 0 V "0 %, 5 V "100 %Throttle valve fully closed: 7 - 11 %
Throttle valve fully open: 65 - 75 %
O2FT B1 S1Oxygen Sensor Fuel Trim Bank 1 Sensor 1
(Same as SHORT FT #1)0 ± 20 %
O2S B1 S2Voltage Output of Oxygen Sensor Bank 1 Sensor
2Driving 50 km/h (31 mph): 0.05 - 0.95 V
O2FT B2 S1Oxygen Sensor Fuel Trim Bank 2 Sensor 1
(Same as SHORT FT #2)0 ± 20 %
A/FS B1 S1Voltage Output of A/F Sensor Bank 1 Sensor 1Idling: 2.8 - 3.8 V
A/FS B2 S1Voltage Output of A/F Sensor Bank 2 Sensor 1Idling: 2.8 - 3.8 V
A/FFT B1 S1A/F Sensor Fuel Trim Bank 1 Sensor 1
(Same as SHORT FT #1)0 ± 20 %
A/FFT B2 S1A/F Sensor Fuel Trim Bank 2 Sensor 1
(Same as SHORT FT #1)0 ± 20 %
*: If no conditions are specifically stated for ºldlingº, it means the shift lever is at N or P position, the A/C switch
is OFF and all accessory switches are OFF.
(b) TOYOTA Enhanced Signals.
TOYOTA hand-held tester displayMeasurement ItemNormal Condition*
MISFIRE RPMEngine RPM for first misfire rangeMisfire 0: 0 rpm
MISFIRE LOADEngine load for first misfire rangeMisfire 0: 0 g/r
INJECTORFuel injection time for cylinder No.1Idling: 1.6 - 2.9 ms
IAC DUTY RATIOIntake Air Control Valve Duty Ratio
Opening ratio rotary solenoid type IAC valveIdling: 27 - 47 %
STARTER SIGStarter SignalCranking: ON
CTP SIGClosed Throttle Position SignalThrottle fully closed: ON
A/C SIGA/C Switch SignalA/C ON: ON
PNP SWPark/Neutral Position Switch SignalP or N position: ON
ELCTRCL LOAD SIGElectrical Load SignalDefogger switch ON: ON
STOP LIGHT SWStop Light Switch SignalStop light switch ON: ON
PS OIL PRESS SWPower Steering Oil Pressure Switch SignalTurn steering wheel: ON
FC IDLFuel Cut Idle: Fuel cut when throttle valve fully
closed, during decelerationFuel cut operating: ON
FC TAUFuel Cut TAU: Fuel cut during very light loadFuel cut operating: ON
CYL#1 - CYL#6Abnormal revolution variation for each cylinder0 %
IGNITIONTotal number of ignition for every 1,000 revolu-
tions0 - 3,000
INTAKE CTRL VSVIntake Air Control Valve VSV SignalVSV operating: ON
A/C CUT SIGA/C Cut SignalA/C S/W OFF: ON
FUEL PUMPFuel Pump SignalIdling: ON
Page 1049 of 1897
DI4DE-02
A02016
E6 E8E7
31 30 29 28 2717
19 20 21
22 23 24 25 2611 12
13 141 2 3 4 5 6 7 8 9
10
ECM Terminals
15 16
181 2 3 4 5 6 7
8 9 10 11 12 13 14 15 16
188
20 21 22 23 2417
191 2 3 4 5 6
7 9 10 11 12
13 14 15 16 171 2 3 4 5 6 7 8 9
10 12 11 13 14 15 16 17 18 19
20 21 23 22 24 26 25 27
281 2 3 4 5 6 7
8 9 10 11 12 13 14 15
16 17 18 19 20 21 22
E5 E4 DI-20
- DIAGNOSTICSENGINE
176 Author: Date:
2001 AVALON (RM808U)
TERMINALS OF ECM
Symbols (Terminal No.)Wiring ColorConditionSTD Voltage (V)
BATT (E8-1) - E1 (E5-17)B-R eBRAlways9 - 14
+B (E8-16) - E1 (E5-17)B-W e BRIG switch ON9 - 14
VC (E5-2) - E2 (E5-18)L-R e WIG switch ON4.5 - 5.5
VTA1 (E5 23) E2 (E5 18)LGWIG switch ON, Throttle valve fully closed0.3 - 1.0VTA1 (E5-23) - E2 (E5-18)LGe WIG switch ON, Throttle valve fully open2.7 - 5.2
VG (E5-10) - E2G (E5-19)R eR-BIdling, A/C switch OFF1.1 - 1.5
VV1+ (E4-10)
- NE- (E5-24)B-W eL
IdliPulse generation
VV2+ (E4-22)
- NE- (E5-24)B-W eL
IdlingPulse generation
(See page DI-124)
NE+ (E5-16) - NE- (E5-24)B-W eLIdlingPulse generation
(See page DI-124)
OC1+ (E4-6) - OC1- (E4-5)R-B e RPl tiOC2+ (E4-29)
- OC2- (E4-18)R-L eR-WIG switch ONPulse generation
(See page DI-127)
THA (E5-22) - E2 (E5-18)L-B eWIdling, Intake air temp. 20°C (68°F)0.5 - 3.4
THW (E5-14) - E2 (E5-18)G-Y eWIdling, Engine coolant temp. 80°C (176°F)0.2 - 1.0
STA (E8-7) - E1 (E5-17)B-R e BRCranking6.0 or more
#10 (E5-5) - E01 (E4-21)
#20 (E5-6) - E01 (E4-21)
#30 (E4 1) E01 (E4 21)
L eW-B
R eW-B
YWB
IG switch ON9 - 14
#30 (E4-1) - E01 (E4-21)
#40 (E4-2) - E01 (E4-21)
#50 (E4-3) - E01 (E4-21)
#60 (E4-4) - E01 (E4-21)Y eW-B
W eW-B
G eW-B
G eW-B
IdlingPulse generation
(See page DI-58)
IGT1 (E4-11) - E1 (E5-17)GR eBR
IGT2 (E4-12) - E1 (E5-17)B-R eBR
IGT3 (E4-13) - E1 (E5-17)LG-B eBRIdliPulse generation
IGT4 (E4-14) - E1 (E5-17)L-Y eBRIdlingPulse generation
(See page DI-1 17)
IGT5 (E4-15) - E1 (E5-17)L eBR
(g )
IGT6 (E4-16) - E1 (E5-17)LG eBR
IG switch ON4.5 - 5.5
IGF (E4-25) - E1 (E5-17)B-Y eBRIdlingPulse generation
(See page DI-1 17)
ACIS (E8-17) - E01 (E4-21)R-Y eW-BIG it h ON914ACI1 (E5-15) - E01 (E4-21)W-R eW-BIG switch ON9 - 14
FC (E8 3) E01 (E4 21)GBWBIG switch ON9 - 14FC (E8-3) - E01 (E4-21)G-B eW-BIdling0 - 3.0
Page 1089 of 1897
DI-512- DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)
668 Author: Date:
2001 AVALON (RM808U)
Driver 's seat reclining switch:
Switch positionTester connectionSpecified condition
FORWARD1 - 3Continuity
REAR1 - 2Continuity
Passenger 's slide switch:
Switch positionTester connectionSpecified condition
FRONT1 - 9Continuity
BACK1 - 6Continuity
Passenger 's front vertical switch:
Switch positionTester connectionSpecified condition
UP1 - 10Continuity
DOWN1 - 5Continuity
Passenger 's lifter switch:
Switch positionTester connectionSpecified condition
UP1 - 7Continuity
DOWN1 - 8Continuity
Passenger 's reclining switch:
Switch positionTester connectionSpecified condition
FORWARD1 - 3Continuity
REAR1 - 2Continuity
NG Replace power seat control switch.
OK
3 Check harness and connectors between Seat Position Control ECU and power
seat control switch (See page IN-30).
NG Repair or replace harness or connector.
OK
Check and replace Seat Position Control
ECU.
Page 1098 of 1897
DI4CK-03
H01451
Y-B
D+ C6 14Airbag Sensor Assembly
13
C6D- Y 1
2
Spiral
Cable D Squib DI-362
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
518 Author: Date:
2001 AVALON (RM808U)
CIRCUIT INSPECTION
DTC B0100/13 Short in D Squib Circuit
CIRCUIT DESCRIPTION
The D squib circuit consists of the airbag sensor assembly, spiral cable and steering wheel pad.
It causes the airbag to deploy when the airbag deployment conditions are satisfied.
For details of the function of each component, see OPERATION on page RS-3.
DTC B0100/13 is recorded when a short is detected in the D squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0100/13
Short circuit between D+ wire harness and D- wire har-
ness of squib
D squib malfunction
Spiral cable malfunction
Airbag sensor assembly malfunctionSteering wheel pad (D squib)
Spiral cable
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
Page 1103 of 1897
R14286H01001H01139
D SquibSpiral
Cable
Airbag
Sensor
Assembly
D+ u"
(-) (+)D-
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-367
523 Author: Date:
2001 AVALON (RM808U)
DTC B0101/14 Open in D Squib Circuit
CIRCUIT DESCRIPTION
The D squib circuit consists of the airbag sensor assembly, spiral cable and steering wheel pad.
It causes the airbag to deploy when the airbag deployment conditions are satisfied.
For details of the function of each components, see OPERATION on page RS-3.
DTC B0101/14 is recorded when an open is detected in the D squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0101/14
Open circuit in D+ wire harness or D- wire harness of
squib
D squib malfunction
Spiral cable malfunction
Airbag sensor assembly malfunctionSteering wheel pad (D squib)
Spiral cable
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
See page DI-362.
INSPECTION PROCEDURE
1 Prepare for inspection. (See step 1 on page DI-475)
2 Check D squib circuit.
CHECK:
For the connector (on the spiral cable side) between the spiral
cable and the steering wheel pad, measure the resistance be-
tween D+ and D-.
OK:
Resistance: Below 1 W
NG Go to step 5.
OK
DI4CL-02
Page 1107 of 1897
H01001H02145H02198
D SquibSpiral
Cable
Airbag
Sensor
Assembly
D+
(-) (+)
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-371
527 Author: Date:
2001 AVALON (RM808U)
DTC B0102/11 Short in D Squib Circuit (to Ground)
CIRCUIT DESCRIPTION
The D squib circuit consists of the airbag sensor assembly, spiral cable and steering wheel pad.
It causes the SRS to deploy when the SRS deployment conditions are satisfied.
For details of the function of each component, see OPERATION on page RS-3.
DTC B0102/11 is recorded when a ground short is detected in the D squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0102/11
Short circuit in D squib wire harness (to ground)
D squib malfunction
Spiral cable malfunction
Airbag sensor assembly malfunctionSteering wheel pad (D squib)
Spiral cable
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
See page DI-362.
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-475).
2 Check D squib circuit.
CHECK:
For the connector (on the spiral cable side) between the spiral
cable and the steering wheel pad, measure the resistance be-
tween D+ and body ground.
OK:
Resistance: 1 MW or Higher
NG Go to step 5.
OK
DI4DM-02
Page 1111 of 1897
H01001H02146
AB0119
H11570
D SquibSpiral
Cable
Airbag
Sensor
Assembly
D+
(-) (+)
ON
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-375
531 Author: Date:
2001 AVALON (RM808U)
DTC B0103/12 Short in D Squib Circuit (to B+)
CIRCUIT DESCRIPTION
The D squib circuit consists of the airbag sensor assembly, spiral cable and steering wheel pad.
It causes the SRS to deploy when the SRS deployment conditions are satisfied.
For details of the function of each component, see OPERATION on page RS-3.
DTC B0103/12 is recorded when a B+ short is detected in the D squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0103/12
Short circuit in D squib wire harness (to B+)
D squib malfunction
Spiral cable malfunction
Airbag sensor assembly malfunctionSteering wheel pad (D squib)
Spiral cable
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
See page DI-362.
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-475).
2 Check D squib circuit.
CHECK:
(a) Turn ignition switch to ON.
(b) For the connector (on the spiral cable side) between the
spiral cable and the steering wheel pad, measure the volt-
age between D+ and body ground.
OK:
Voltage: 0 V
NG Go to step 5.
OK
DI4DN-02