2005 TOYOTA AVENSIS Circuit

05±1714
± DIAGNOSTICSCRUISE CONTROL SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
HINT:
In case of using the hand±held tester, start the inspection from step1, and in case of not using the hand±held
tester, start from step 2.
1 READ VALUE OF HAND±HELD TESTER
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch to the ON position and turn the hand±held tester main switch ON.
(c) Select the item ºSTOP LIGHT SWº in the DATA LIST and read the displayed value.
ItemMeasurement Item /
Display (Range)Normal ConditionDiagnostic Note
STP LIGHT SW2 MStop lamp SW signal (Main CPU) /
ON or OFFON : Brake pedal depressed
OFF : Brake pedal released±
STP LIGHT SW2 SStop lamp SW signal (Sub CPU) /
ON or OFFON : Brake pedal depressed
OFF : Brake pedal released±
Standard:
Brake pedal depressed: OK
Brake pedal released: OFF
NG Go to step 2
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE
2 INSPECT STOP LAMP SWITCH OPERATION
(a) Check that the stop lamp lights up when brake pedal is depressed, and goes off when the brake pedal
is released.
NG INSPECT STOP LAMP SWITCH CIRCUIT
OK

05±1710
±
DIAGNOSTICS CRUISE CONTROL SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0500/21 VEHICLE SPEED SENSOR ºAº
DTC P0503/23 VEHICLE SPEED SENSOR ºAº INTERMITTENT/ERRATIC/HIGH
CIRCUIT DESCRIPTION
See page 05±453. (1AZ±FSE) See page 05±640. (1CD±FTV)
DTC No.DTC Detection ConditionTrouble Area
P0500/21
The malfunction code is output when the vehicle speed signal
from the vehicle speed sensor is cut for 0.14 sec. or more
while cruise control is in operation.

Combination meter

Vehicle speed sensor
P0503/23
Momentary interruption and noise malfunction codes are output
when a rapid change of vehicle speed occurs while cruise
control is in operation.
Vehicle s eed sensor

Vehicle speed sensor

ECM
WIRING DIAGRAM
See page 05±453. (1AZ±FSE) See page 05±640. (1CD±FTV)
INSPECTION PROCEDURE
See page 05±453. (1AZ±FSE) See page 05±640. (1CD±FTV)
05C4Q±01

056HK±05
±
DIAGNOSTICS CRUISE CONTROL SYSTEM
05±1709
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
If a normal code is displayed during the DTC check but the problem still o\
ccurs, check the circuits for each
problem symptom in the order given in the table below and proceed to the relate\
d troubleshooting page.
SymptomSuspect AreaSee page
Main switch cannot be turned ON.
(Cruise indicator light in combination meter is not lit.)1. Cruise control switch circuit
2. CRUISE MAIN indicator light circuit
3. ECM05±1718
05±1722
01±32
Setting of vehicle speed cannot be done.
(Although indicator light in combination meter is lit when the main
switch is turned ON, they go off when vehicle speed is set.)1. Cruise control switch circuit
2. ECM05±171801±32
Setting cannot be done.
(Indicator light in combination meter is lit when the main switch is
turned ON and they remain ON while setting.)1. Cruise control switch circuit
2. Stop lamp switch circuit
3. Combination meter system
4. ECM05±171805±1711 71±1
01±32
While the vehicle is driving with cruise control, the set control is
canceled.
(Indicator light and CRUISE remain ON.)
1. Cruise control switch circuit
2. Vehicle speed sensor circuit
3. Stop lamp switch circuit
4. CRUISE MAIN indicator light circuit
5. ECM05±1718
05±1710 05±1711
05±1722 01±32
Hunting
(Speed is not constant.)1. Vehicle speed sensor circuit
2. ECM05±1710
01±32
Setting cannot be cancelled.
(When Coast, Acceleration, Resume, Set speed change and Con-
trol switch are operated.)1. Cruise control switch circuit
2. CRUISE MAIN indicator light circuit
3. ECM05±1718
05±172201±32
DTC is not output, or is output when should not be.
1. Diagnosis circuit
2. CRUISE MAIN indicator light circuit
3. ECM05±1729
05±172201±32
CRUISE MAIN indicator light does not light up.
1. Cruise control switch circuit
2. CRUISE MAIN indicator light circuit
3. ECM
4. Combination meter05±1718
05±172201±3271±1

056HH±05
±
DIAGNOSTICS CRUISE CONTROL SYSTEM
05±1705
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is indicated during the DTC check, check the circuit\
listed for that code in the table
below, and proceed to the applicable page.
DTC No.
(See Page)Circuit InspectionTrouble Area
P0500/21
(05±1710)Vehicle Speed Sensor ºAº
Combination meter assy

Vehicle speed sensor
P0503/23
(05±1710)Vehicle Speed Sensor ºAº Intermittent/Erratic/High
Vehicle s eed sensor

Vehicle speed sensor circuit

ECM
P0571/52
(05±1711)Brake Switch ºAº Circuit

Stop lamp switch assy

Stop lamp switch assy circuit

ECM
P0607/54
(05±1717)Control Module Performance
ECM

I34749
BE4034
Indicator Light1.5 sec. 0.5 sec.
ON
OFF
C52361
DLC3 CG
TC
I03610
Normal Code
0.25 sec.
0.25 sec.
ON
OFF
ON
OFF
2.5 sec.
0.5 sec.1.5 sec.
Code 52
Code 52
0.5 sec.
±
DIAGNOSTICS CRUISE CONTROL SYSTEM
05±1701
AVENSIS REPAIR MANUAL (RM1018E)
(c)Check the indicator.
(1)Turn the ignition switch to the ON position.
(2)Check that the CRUISE MAIN indicator light comeson when the main switch is ON, and that the indica-
tor light goes off when the main switch is OFF.
HINT:
If there is a problem with the indicator, inspect the cruise main
indicator light circuit (See page 05±1722).
(d)Check the DTC.
HINT:
If a malfunction occurs in the vehicle speed sensors or stop
lamp switch assy, etc. during cruise control driving, the ECU ac-
tuates AUTO CANCEL of the cruise control and then the
CRUISE MAIN indicator light will start to blink, informing the
driver of a malfunction. At the same time, data of the malfunc-
tion is stored as a diagnostic trouble code, or DTC.
(e)Output of the DTC using diagnosis check wire. (1)Using SST, connect terminals TC and CG
of DLC3.
SST09843±18040
(2)Turn the ignition switch to the ON position.
(3)Read the DTC on the CRUISE MAIN indicator light.
HINT:
If the DTC is not output, inspect the cruise main indicator light
circuit (See page 05±1722) and diagnosis circuit (See page
05±1729).
For example, the normal blinking pattern and the blinking pat-
tern for code 52 are shown in the illustration.

05ADI±04
±
DIAGNOSTICS CRUISE CONTROL SYSTEM
05±1697
AVENSIS REPAIR MANUAL (RM1018E)
CRUISE CONTROL SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
1 VEHICLE BROUGHT TO WORK SHOP
2CUSTOMER PROBLEM ANALYSIS (See page 05±1699)
3CHECK AND CLEAR DTCS (See page 05±1700)
4 PROBLEM SYMPTOM CONFIRMATION
SYMPTOM DOES NOT OCCUR (GO TO STEP 5)
SYMPTOM OCCURS (GO TO STEP 6)
5SYMPTOM SIMULATION (See page 01±22)
6DTC CHECK (See page 05±1700)
MALFUNCTION CODE (GO TO STEP 7)
NORMAL CODE (GO TO STEP 8)
7DTC CHART (See page 05±1705)
GO TO STEP 9
8PROBLEM SYMPTOMS TABLE (See page 05±1709)
9CIRCUIT INSPECTION (See page 05±453)

± 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 seconds
Combination meter assy (Combination meter ECU)

Wire harness
05C5T±01

E34090
± ENGINE CONTROL SYSTEMSFI SYSTEM (1AZ±FE)
10±23
AVENSIS REPAIR MANUAL (RM1018E)
8. INSPECT CIRCUIT OPENING RELAY
(a) Inspect the relay continuity.
(1) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
Specified condition: Continuity
(2) Check that there is no continuity between terminals
3 and 5.
Specified condition: No continuity
(b) Inspect the relay operation.
(1) Apply battery voltage across terminals 1 and 2.
(2) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
Specified condition: Continuity