2005 TOYOTA AVENSIS cruise control system
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± INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS01±25
AVENSIS REPAIR MANUAL (RM1018E)
SYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE
HINT:
The diagnostic system in AVENSIS has various functions. The first function is the Diagnostic Trouble
Code (DTC) Check, in which a malfunction in the signal circuits to the ECU is stored in code form in
the ECU memory. Another function is the Input Signal Check, which checks if the signals from various
switches are sent to the ECU correctly. By using these check functions, it is possible to quickly narrow
down potential problem areas and troubleshooting can be performed effectively. The diagnostic func-
tions are incorporated in the following systems in the AVENSIS.
SystemDiagnostic Trouble
Code CheckInput Signal Check
(Sensor Check)Diagnostic Test
Mode (Active Test)
SFI System (1AZ±FE/1AZ±FSE, 1ZZ±FE/3ZZ±FE)
(with Check Mode)
ECD System (1CD±FTV)
(with Check Mode)
ABS with EBD System
ABS with EBD & BA & TRC & VSC System
Electronically Controlled Automatic Transmission [ECT]
(with Check Mode)
Air Conditioning System
Supplemental Restraint System
Audio System
Power Door Lock Control System
Wireless Door Lock Control System
Key Reminder Warning System
Engine Immobiliser System
Theft Deterrent System
Multiplex Communication System
Cruise Control System
In the DTC check, it is very important to determine whether the problem indicated by the DTC is still
occurring or has occurred in the past but returned to normal at present. In addition during the problem
symptom check, it a check must be made on whether the malfunction indicated by the DTC is directly
related to the problem symptom or not. For this reason, the DTC should be checked before and after
symptom confirmation to determine the current conditions. If this is not done, it may, depending on the
case, result in unnecessary troubleshooting for systems that are operating normally. This would make
more difficult to detect the problem area or to try to repair irrelevant areas. Therefore, always follow
the procedures in the correct order and perform the DTC check.
A flow chart showing how to proceed with troubleshooting using the diagnostic trouble code (DTC)
check is shown the this page. This flow chart shows how to utilize the DTC check effectively. Then,
by carefully checking the results, this chart indicates how to proceed either to the DTC troubleshooting
or to the troubleshooting of the problem symptoms table.
1 DTC check
2 Make a note of DTCs displayed and then clear the memory
3 Symptom confirmation
Page 31 of 5135
010B6±13
±
INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS01±21
AVENSIS REPAIR MANUAL (RM1018E)
HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS
GENERAL INFORMATION
There are many ECU controlled systems used in the AVENSIS. In general, ECU controlled system are con-
sidered to be very intricate and require a high level of technical knowledge an\
d expert skill to troubleshoot.
The fact is, however, that if you proceed by inspecting the circuits one by one, troubleshoo\
ting of these sys-
tems is not complex. If you have adequate understanding of the system and ba\
sic knowledge of electricity,
the problem can be accurately diagnosed and fixed. This manual is design\
ed based on the above principle
to help service technicians perform accurate and effective troubleshooting, and is compiled for the following
major ECU controlled systems:
The troubleshooting procedures are described on the following pages.
SystemPage
1. SFI System [1ZZ±FE, 3ZZ±FE]05±1
2. SFI System [1AZ±FE]05±143
3. SFI System [1AZ±FSE]05±290
4. ECD System [1CD±FTV]05±523
5. ABS with EBD System05±696
6. ABS with EBD & BA & TRC & VSC System05±752
7. Electronic Controlled Automatic Transmission [ECT] [U241 (1AZ±FE)]05±856
8. Electronic Controlled Automatic Transmission [ECT] [U241 (1AZ±FSE)]05±915
9. Electronic Controlled Automatic Transmission [ECT] [U341]05±980
10.Electronic Motor Power Steering System05±1042
11. Air Conditioning System05±1088
12.Combustion Type Power Heater System05±1161
13.Supplemental Restraint System05±1181
14.Audio System05±1393
15.Navigation System05±1435
16.Combination Meter05±1497
17.Power Door Lock Control System05±1534
18.Wireless Door Lock Control System05±1568
19.Key Reminder Warning System05±1586
20.Engine Immobiliser System05±1599
21.Theft Deterrent System05±1627
22.Multiplex Communication System05±1654
23.Cruise Control System05±1697
FOR USING HAND±HELD TESTER
Before using the tester, the tester's operator manual should be read thoroughly.
If the tester cannot communicate with the ECU controlled systems when you \
have connected the cable
of tester to the DLC3, turned the ignition switch ON and operated the test\
er, there is a problem on the
vehicle side or tester side.
(1) If the communication is normal when the tester is connected to another veh\
icle, inspect the diag-
nosis data link line (Bus line) or ECU power circuit of the vehicle.
(2) If the communication is still impossible when the tester is connected to a\
nother vehicle, the prob- lem is probably in the tester itself, so perform the Self Test procedures outlined in the Tester Oper-
ator 's Manual.
Page 423 of 5135
05±314
±
DIAGNOSTICS SFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
\f
*
1
CHK ENG
\b
P0555
(05±459)Brake Booster Pressure Sensor
Circuit
Open or short in brake booster pressure sensor circuit
Brake booster pressure sensor
Vacuum hose
ECM
P0556
(05±462)Brake Booster Pressure Sensor
Circuit Range/Performance
Vacuum hose (between the brake booster and intake manifold,
the brake booster and brake booster pressure sensor, and the
intake manifold and manifold absolute pressure sensor)
Open or short in brake booster pressure sensor circuit
Brake booster pressure sensor
Manifold absolute pressure sensor
Brake booster
Open or short in stop light switch circuit
Stop light switch
ECM
P0557
(05±459)Brake Booster Pressure Sensor
Circuit Low Input Same as DTC No. P0555
P0558
(05±459)Brake Booster Pressure Sensor
Circuit High Input Same as DTC No. P0555
P0560
(05±467)System Voltage Open in back±up power source circuit
ECM
P0571
(05±1711)Brake Switch ºAº Circuit Cruise control system
P0604
(05±470)Internal Control Module Random
Access Memory (RAM) Error
P0606
(05±470)ECM/PCM Processor ECM
P0607
(05±470)Control Module Performance
P0617
(05±471)Starter Relay Circuit High
Short in park/neutral position switch (A/T)
Park/neutral position switch (A/T)
Ignition switch
ECM
P0657
(05±470)Actuator Supply Voltage Circuit /
Open ECM
P0705 *4
(05±474)
Transmission Range Sensor Cir-
cuit Malfunction (PRNDL Input)Short in park/neutral position switch circuit
Park/neutral position switch
ECM
P0710 *4
(05±941)
Transmission Fluid Temperature
Sensor ºAº circuitElectronic controlled automatic transmission (ECT)
P0711 *3,4
(05±943)
Transmission Fluid Temperature
Sensor ºAº PerformanceElectronic controlled automatic transmission (ECT)
P0712 *4
(05±941)
Transmission Fluid Temperature
Sensor ºAº Circuit Low InputElectronic controlled automatic transmission (ECT)
P0713 *4
(05±941)
Transmission Fluid Temperature
Sensor ºAº Circuit High InputElectronic controlled automatic transmission (ECT)
P0717 *4
(05±945)
Input/Turbine Speed Sensor ºAº
Circuit No SignalElectronic controlled automatic transmission (ECT)
P0724 *4
(05±947)Brake Switch ºBº Circuit High
Short in stop light switch signal circuit
Stop light switch
ECM
P0741 *3,4
(05±948)
Torque Converter Clutch Circuit
Performance or Stuck OffElectronic controlled automatic transmission (ECT)
P0743 *4
(05±951)
Torque Converter Clutch Circuit
ElectricalElectronic controlled automatic transmission (ECT)
Page 1742 of 5135
I35707
1AZ±FSE
D5
DLC3
TC
CG13
4W±L
W±B
W±B W±LW±L
W±BW±L
TC 20
E12 17 3
DB DC
CB CA36 DBB
B
A J21 J20J8
J8
J16
J/C
IOIP Center J/B Driver Side J/BECM
*2: RHD *1: LHD (*1)(*1)
(*1)(*2)
(*2)
(*2)
(*1) (*2)
(*2) J/B
A
W±B
± DIAGNOSTICSCRUISE CONTROL SYSTEM
05±1729
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSIS CIRCUIT
CIRCUIT DESCRIPTION
Making short circuit between terminal TC and CG of DLC3 will output DTC from the DLC3.
WIRING DIAGRAM
05C4V±01
Page 1743 of 5135
I35707
1CD±FTV
D5
DLC3
TC
CG13
4W±L
W±B
W±B W±LW±L
W±BW±L
TC 11
E12 17 3
DB DC
CB CA36 DBB
B
A J21 J20J8
J8
J16
J/C
ILIP Center J/B Driver Side J/BECM
*2: RHD *1: LHD (*1)(*1)
(*1)(*2)
(*2)
(*2)
(*1) (*2)
(*2) J/B
A
W±B
C52361
TC D5
DLC3
CG
05±1730
± DIAGNOSTICSCRUISE CONTROL SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 INSPECT DLC3(TC TERMINAL VOLTAGE)
(a) Turn the ignition switch to the ON position.
(b) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester ConnectionSpecified Condition
TC (D5 ± 13) ± CG (D5 ± 4)10 to 14 V
NG Go to step 3
OK
Page 1744 of 5135
C52361
TCD5
DLC3
C52361CG
D5
DLC3
±
DIAGNOSTICS CRUISE CONTROL SYSTEM
05±1731
AVENSIS REPAIR MANUAL (RM1018E)
2CHECK HARNESS AND CONNECTOR(DLC3 ± ECM)
(a)Disconnect the ECM connector.
(b)Measure the resistance according to the value(s) in the
table below.
Standard:
1AZ±FSE
Tester ConnectionSpecified Condition
TC (D5 ± 13) ± TC (E12 ± 20)1 or less
1CD±FTV
Tester ConnectionSpecified Condition
TC (D5 ± 13) ± TC (E12 ± 11)1 or less
(c)Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
TC (E12 ± 20) ± Body ground10 kor higher
TC (E12 ± 11) ± Body ground10 k or higher
NGREPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ECM (See page 01±32)
3 CHECK HARNESS AND CONNECTOR(DLC3 ± BODY GROUND)
(a) Disconnect the ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard:
Tester ConnectionSpecified Condition
CG (D5 ± 4) ± Body ground10 kor higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
Page 1745 of 5135
C52361
TCD5
DLC3
05±1732
±
DIAGNOSTICS CRUISE CONTROL SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
4CHECK HARNESS AND CONNECTOR(DLC3 ± ECM)
(a)Disconnect the ECM connector.
(b)Measure the resistance according to the value(s) in the table below.
Standard:
1AZ±FSE
Tester ConnectionSpecified Condition
TC (D5 ± 13) ± TC (E12 ± 20)1 or less
1CD±FTV
Tester ConnectionSpecified Condition
TC (D5 ± 13) ± TC (E12 ± 11)1 or less
(c)Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
TC (E12 ± 20) ± Body ground10 kor higher
TC (E12 ± 11) ± Body ground10 k or higher
NGREPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ECM (See page 01±32)
Page 1746 of 5135
I35709
C9
Clutch Start
SW Assy
R±W R±W
R±W R±W
R±W
W±B W±B LG±B
LG±BLG±B
LG±BLG±B
LG±B (*1)
(*2)12 9
515
6
21
568
610 J14
J/C
J19
J/C
DECM
E11
DD
6
IP CPU
CRUISEC11
C11CD
CKCE
CA Center J/B Combination Meter AssyIE2
IR1IE2
IR1 (*1) (*1) (*1) (*1)
CC
(*2)
(*2)(*2)
(*2)
*1: LHD
*2: RHD 1AZ±FSE (M/T) 05±1722
± DIAGNOSTICSCRUISE CONTROL SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
CRUISE MAIN INDICATOR LIGHT CIRCUIT
CIRCUIT DESCRIPTION
When the cruise control main switch is turned off, the cruise control does not operate.
WIRING DIAGRAM
05C4U±01