05C5F±01
F15799
C52361
DLC3:CG
Tc
F40045
Normal Code
0.25 sec.
0.25 sec.
ON
OFF
ON
OFF 0.5 sec.
0.5 sec.
Codes 21 and 22
1.5 sec.2.5 sec.
Code 21
Code 22
4 sec.0.5 sec.
±
DIAGNOSTICS ELECTRONIC MOTOR POWER STEERING SYSTEM
05±1045
AVENSIS REPAIR MANUAL (RM1018E)
PRE±CHECK
1.DIAGNOSIS SYSTEM
(a)Check the PS warning light.
(1)When the ignition switch is turned ON, check thatthe PS warning light goes on for 2 seconds.
HINT:
If the indicator check result is not normal, proceed to trouble-
shooting for the PS warning light circuit (See page 05±1082).
2.DTC CHECK (USING SST CHECK WIRE)
(a)Checking DTCs using a SST check wire. SST09843±18040
(1)Using SST, connect terminals Tc and CG of theDLC3.
(2)Turn the ignition switch to ON.
(3)Read and record any DTCs from the P/S warning light on the combination meter. Refer to the chart on
the left for examples of a normal code and codes 21
and 22.
HINT:
If the P/S warning light does not blink any DTC codes or
the normal code, inspect the circuit shown in the charts
below.
Trouble Area
Tc Terminal Circuit05±1084
P/S Warning Light Circuit05±1082
If 2 or more malfunctions are detected at the same time,
DTC will be displayed in the ascending order.
(4)Refer to the Diagnostic Trouble Code Chart (See page 05±1054) for DTC information.
C52361
DLC3:
CGTs 05±1046
± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
(b) Clearing the DTCs using the SST check wire.
SST 09843±18040
(1) Using SST, connect terminals Ts and CG of the
DLC3.
(2) Turn the ignition switch to ON.
(3) Disconnect and connect the SST check wire from
the CG terminal 4 times or more in 8 seconds end-
ing with it connected.
(4) Check that the P/S warning light blinks a normal
code.
(5) Turn the ignition switch to OFF.
(6) Remove the SST from the DLC3.
SST 09843±18040
3. DTC CHECK (USING HAND±HELD TESTER)
(a) Checking DTCs using the hand±held tester.
(1) Connect the hand±held tester to the DLC3.
(2) Turn the ignition switch to ON.
(3) Read the DTCs by following the prompts on the tes-
ter screen.
HINT:
Refer to the hand±held tester operator's manual for further de-
tails.
(b) Clearing the DTCs using the hand±held tester.
(1) Connect the hand±held tester to the DLC3.
(2) Turn the ignition switch to ON.
(3) Clear the DTCs by following the prompts on the tes-
ter screen.
HINT:
Refer to the hand±held tester operator's manual for further de-
tails.
4. DATA LIST AND FREEZE FRAME DATA
HINT:
Ignition switch must be turned ON, and the vehicle should be placed on a leveled ground to observe data
by using a hand±held tester.
Data List (*: with freeze frame data):
ItemMeasurement Item / Range (Dis-
play)Normal ConditionDiagnostic Note
TRQ1 (*)
Show the output states in the
torque sensor /
Min.: 0 V, Max.: 5 V
Steering wheel center position:
2.3 to 2.7 V
Steering wheel right turned:
2.5 to 4.7 V
Steering wheel left turned:
0.3 to 2.5 V
±
TRQ2 (*)
Show the output states in the
torque sensor /
Min.: 0 V, Max.: 5 V
Steering wheel center position:
2.3 to 2.7 V
Steering wheel right turned:
2.5 to 4.7 V
Steering wheel left turned:
0.3 to 2.5 V
±
± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
05±1047
AVENSIS REPAIR MANUAL (RM1018E)ItemDiagnostic Note Normal Condition Measurement Item / Range (Dis-
play)
TRQ3 (*)
Show the output states in the
torque sensor /
Min.: 0 V, Max.: 5 V
Steering wheel center position:
2.3 to 2.7 V
Steering wheel right turned:
2.5 to 4.7 V
Steering wheel left turned:
0.3 to 2.5 V
±
SPD (*)
Show the vehicle speed on the
speedometer /
Min.: 0 km/h (0 mph),
Max.: 255 km/h (158 mph)
Actual vehicle speedVehicle speed indicated on
speedometer
ENGINE REV (*)
Show the engine revolution /
Min.: 0 rpm
Max.: 8,192 rpm
Actual engine speed±
MOTOR ACTUAL (*)Show the current flowing motor /
Min.: ±128 A, Max.: 128 A0 to 65 A±
COMMAND VALUE (*)Show the specified current value /
Min.: ±128 A, Max.: 128 A0 to 65 A±
THERMISTOR TEMP (*)
Show the temperature of the
thermistor /
Min.: ±50 C, Max.: 205 C
±±
PIG SUPPLY (*)
Show the power supply voltage for
driving motor /
Min.: 0 V, Max.: 25 V
10 to 16 VWhile power steering operated
IG SUPPLY (*)Show the power supply condition /
Min.: 0 V, Max.: 25 V10 to 16 V±
TRQ1 ZERO VAL (*)Show the torque sensor/
Min.: 0 V, Max.: 5 VSteering wheel center position:
2.3 to 2.7 V±
TRQ2 ZERO VAL (*)Show the torque sensor/
Min.: 0 V, Max.: 5 VSteering wheel center position:
2.3 to 2.7 V±
TRQ3 ZERO VAL (*)Show the torque sensor/
Min.: 0 V, Max.: 5 VSteering wheel center position:
2.3 to 2.7 V±
MTR OVERHEAT
Record of continuous overheat
preventive control /
record or un±record
Un±record±
MTR LOW POWERRecord of low motor power supply
voltage / record or un±recordUn±record±
MTR HIGH POWERRecord of high motor power sup-
ply voltage / record or un±recordUn±record
#CODESNumber of DTC recorded /
Min.: 0, Max.: 255Min.: 0, Max.: XX±
ASSIST MAPShow the selected condition of the
assist map / 01, 02, 03, 11 or 12±±
ECU IDShow the identified information of
ECU / 01, 02, 03, 04 or 05±±
TEST MODE STATTest mode status / NORMAL or
TESTNORMAL: Normal mode
TEST: During test mode±
C52361
DLC3:CGTs
Tc
F42646
Malfunction Code (Example Code 73)
7 3
ON
OFF
0.5 sec.
0.5 sec.
0.5 sec. 4 sec.
Repeat
0.5 sec.
ON
OFF
0.25 sec.
0.25 sec.
Normal Code
A Cycle 1.5 sec.
05±1048
±
DIAGNOSTICS ELECTRONIC MOTOR POWER STEERING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
5.INPUT SIGNAL CHECK (TEST MODE) (USING SST CHECK WIRE)
(a)Check the input signal using a SST check wire.
(1)Using SST, connect terminals Ts and CG of DLC3.
SST09843±18040
(2)Turn the ignition switch to ON.
(3)Check that the PS warning light shows the normalcode.
(4)Check that the PS warning light goes off while driv- ing the vehicle more than 10 km/h (6 mph) and the
engine speed more than 300 rpm.
HINT:
If the PS warning light goes off during driving, the sensor is
judged to be normal.
(5)Stop the vehicle.
(6)Using SST, connect terminals Tc and CG of DLC3.
SST09843±18040
(7)Read the number of blinks of the PS warning light.
HINT:
See the list of DTC shown in the table below.
Even if a sensor is normal, it output codes 71 and 73 dur-
ing test mode.
DTC of input signal check function:
Code No.
(See page)DiagnosisTrouble Area
C1571/71
(05±1067)Speed sensor signal check 1 (Test mode)
Speed sensor
Speed sensor circuit
Skid control ECU assy
Combination meter assy
Power steering ECU assy
C1573/73
(05±1070)Engine revolution signal check (Test mode)
Engine revolution signal circuit
ECM
Power steering ECU assy
(8) After checking, disconnect the SST from the termi-
nal Ts and CG, Tc and CG of DLC3, and turn the
ignition switch to OFF.
SST 09843±18040
C52361
DLC3:CGTs
Tc
±
DIAGNOSTICS ELECTRONIC MOTOR POWER STEERING SYSTEM
05±1049
AVENSIS REPAIR MANUAL (RM1018E)
6.INPUT SIGNAL CHECK (TEST MODE)
(USING HAND±HELD TESTER)
(a)Check the input signal using the hand±held tester.
(1)Connect the hand±held tester to the DLC3.
(2)Check that the warning light goes off with driving thevehicle more than 10 km/h (6 mph) and engine
speed more than 300 rpm.
(3)Read the DTC by following the prompts on the tes- ter screen.
HINT:
Refer to the hand±held tester operator's manual for fur-
ther details.
See the list of DTC shown in the table below.
Even if a sensor is normal, it outputs codes C1571/71 and
C1573/73 during test mode.
DTC of input signal check function:
Code No.
(See page)DiagnosisTrouble Area
C1571/71
(05±1067)Speed sensor signal check 1 (Test mode)
Speed sensor
Speed sensor circuit
Skid control ECU assy
Combination meter assy
Power steering ECU assy
C1573/73
(05±1070)Engine revolution signal check (Test mode)
Engine revolution signal circuit
ECM
Power steering ECU assy
7. CALIBRATION OF TORQUE SENSOR ZERO POINT
(USING SST CHECK WIRE)
HINT:
Perform this operation in the following cases.
When removing and installing ºsteering wheel assemblyº,
ºtilt steering column assemblyº and ºsteering gear assem-
blyº.
When replacing power steering ECU assy.
(a) Place front wheels and steering wheel facing straight ahead.
(b) Perform the torque sensor zero point initialization.
HINT:
If the power steering ECU assy is replaced, initialization is not
necessary. (1) Stop the vehicle and turn the ignition switch OFF.
(2) Using SST, connect terminals Ts and CG of DLC3.
SST 09843±18040
(3) Using SST, connect terminals Tc and CG of DLC3.
SST 09843±18040
(4) Turn the ignition switch ON.
050Y7±04
Inspector 's
Name:
Customer 's Name
Date Vehicle
Brought InLicence No.
Odometer Reading/ /
/ /
Date Problem First Occurred
Frequency Problem Occurs
ContinuousIntermittent ( times a day)
Steering operation is heavy.
Steering force to the right and left differs, or steering force is uneven.
PS Warning Light
AbnormalRemains ONDoes not come on
DTC Check1st Time
2nd TimeNormal Code
Malfunction Code (Code )
Normal CodeMalfunction Code (Code )
Symptomskm
miles
EMPS Check Sheet
While running, the steering force does not alter corresponding the vehicle
speed.
Vibration or strange sound comes from the steering column assy.
A malfunction code is outputed at the first time, record the freeze frame data as well (as the DTCs). Freeze Frame Data
When a trouble happens
(
During turningDuring vehicle stopAlways)
OthersCooled Warmed up
/ /Engine() Vehicle Model
The steering returns unwell.
Production Date VIN 05±1044
± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
CUSTOMER PROBLEM ANALYSIS CHECK
050Y2±04
05±1042
±
DIAGNOSTICS ELECTRONIC MOTOR POWER STEERING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
ELECTRONIC MOTOR POWER STEERING SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Perform troubleshooting in accordance with the procedure on the following pages\
.
HINT:
See the indicated pages for detailed explanation.
The hand±held tester can be used at step 3, 6, 9, 12.
1VEHICLE BROUGHT TO WORKSHOP
2CUSTOMER PROBLEM ANALYSIS(See page 05±1044)
3 CHECK AND CLEAR DTCS AND FREEZE FRAME DATA
(a)After the completion of the DTC and freeze frame data check, clear the DTCs (See page 05±1045).
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±1045)
NORMAL CODE(Go to step 7)
MALFUNCTION CODE(Go to step 8)
7PROBLEM SYMPTOMS TABLE(See page 05±1058)
8DTC CHART(See page 05±1054)
050TJ±13
05±1094
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
If malfunction code is displayed during the DTC check (sensor check), ch\
eck the circuit listed for the code
in the table below (Proceed to the page given for that circuit).
DTC No.
(See Page)Detection ItemTrouble AreaMemory
00Normal±±
11 *1
(05±1102)
Room temperature sensor circuit
(open/short) Cooler thermistor (room temp. sensor)
Harness or connector between cooler thermistor (room
temp. sensor) and A/C amplifier assy
A/C amplifier assy
(8.5 min. or more)
12 *2
Ambient temperature sensor circuit
(open/short) Thermistor assy (ambient temp. sensor)
Harness or connector between thermistor assy (ambient
temp. sensor) and combination meter
Combination meter12
(05±1106) Combination meter
Harness or connector between combination meter and A/C
amplifier assy
A/C amplifier assy
(8.5 min. or more)
13
(05±1109)
Evaporator temperature sensor circuit
(open/short) Cooler thermistor No.1 (evaporator temp. sensor)
Harness or connector between cooler thermistor No.1
(evaporator temp. sensor) and A/C amplifier assy
A/C amplifier assy
(8.5 min. or more)
21 *3
Solar sensor circuit (open) (Passenger
side) Automatic light control sensor (solar sensor)
Harness or connector between automatic light control sen-
( l ) d A/C lifi
(8.5 min. or more)
21
(05±1113)
Solar sensor circuit (short) (Passenger
side)sor (solar sensor) and A/C amplifier assy
A/C amplifier assy
±
23
(05±1116)
Pressure sensor circuit A/C tube assy (pressure sensor)
Harness or connector between A/C tube assy (pressure
sensor) and A/C amplifier assy
A/C amplifier assy
±
24 *3
Solar sensor circuit (open)
(Driver side)Automatic light control sensor (solar sensor)
Harness or connector between automatic light control sen-
( l ) d A/C lifi
(8.5 min. or more)
24
(05±1119)
Solar sensor circuit (short)
(Driver side)sor (solar sensor) and A/C amplifier assy
A/C amplifier assy
±
31
(05±1122)
Air mix damper position sensor circuit
(Passenger side) Air mix damper servo sub±assy (air mix damper position
sensor)
Harness or connector between air mix damper servo sub±
assy (air mix damper position sensor) and A/C amplifier
assy
A/C amplifier assy
(1 min. or more)
33
(05±1126)
Air outlet damper position sensor circuit Mode damper servo sub±assy (mode damper position sen-
sor)
Harness or connector between mode damper servo sub±
assy (mode damper position sensor) and A/C amplifier assy
A/C amplifier assy
(1 min. or more)
36
(05±1129)
Air mix damper position sensor circuit
(Driver side) Air mix damper servo sub±assy (Air mix damper position
sensor)
Harness or connector between air mix damper servo sub±
assy (air mix damper position sensor) and A/C amplifier
assy
A/C amplifier assy
(1 min. or more)
41
(05±1133)
Air mix damper control servomotor
(Passenger side) Air mix damper servo sub±assy (air mix damper control)
Harness or connector between air mix damper servo sub±
assy (air mix damper control) and A/C amplifier assy
A/C amplifier assy
(15 sec.)