2006 TOYOTA RAV4 Service Repair Manual

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Page 1617 of 2000

TOYOTA RAV4 2006 Service Repair Manual POWER STEERING – ELECTRONIC POWER STEERING SYSTEMPS–17
PS
DATA LIST / ACTIVE TEST
1. READ DATA LIST
HINT:
Using the intelligent tester's DATA LIST allows switch,
sensor, actuator and other

POWER STEERING – ELECTRONIC POWER STEERING SYSTEMPS–17
PS
DATA LIST / ACTIVE TEST
1. READ DATA LIST
HINT:
Using the intelligent tester's DATA LIST allows switch,
sensor, actuator and other item values to be read without
removing any parts. Reading the DATA LIST early in
troubleshooting is one way to save time.
(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the ignition switch ON and press the intelligent
tester main switch ON.
(c) Read the DATA LIST by following the directions on
the tester screen.
Tester Display Measurement Item/Range Normal Condition Reference Value
BATTERY VOLTAGE Battery voltage:
Min.: 0 V
Max.: 25.5 V- 10 to 14 V
SPD Vehicle speed from meter:
Min.: 0 km/h (0 mph)
Max.: 300 km/h (187.5 mph)Vehicle stopped 0 km/h (0 mph)
Vehicle driven at constant speed No significant fluctuation
SPD SIG INVALID Record of vehicle speed signal
invalid:
REC or UNREC- UNREC
ENGINE REV Show the engine revolution:
Min.: 0 rpm
Max.: 12800 rpmEngine is running at a constant
speedNo significant fluctuation
ENG REV INTER Record of engine revolution
signal interruption
REC or UNREC- UNREC
MOTOR ACTUAL Amount of current to motor:
Min.: -327.68 A
Max.: 327.67 APower steering is in operation Value changes in proportion to
steering effort
COMMAND VALUE Demanded amount of current to
motor:
Min.: -327.68 A
Max.: 327.68 APower steering is in operation Value changes in proportion to
steering effort
STR ANGL VEL Steering angle speed:
Min.: -32768
/sec.
Max.: 32767
/sec.Steering wheel is turned Value changes in proportion to
steering effort
STEERING TORQUE Steering wheel torque:
Min.: -7 Nm
Max.: 7 Nm--
THERMISTOR TEMP ECU substrate temperature:
Min.: -40
C
Max.: 150
CIgnition switch ON -
PIG SUPPLY Power source voltage to activate
motor:
Min.: 0 V
Max.: 20.1531 VPower steering in operation 10 to 14 V
IG SUPPLY ECU power source voltage:
Min.: 0 V
Max.: 20.1531 VIgnition switch ON 10 to 14 V
MTR OVERHEAT Continuous overheat prevention
control record:
REC or UNREC- UNREC
MTR LOW POWER PIG power source voltage drop
record:
REC or UNREC- UNREC

Page 1618 of 2000

TOYOTA RAV4 2006 Service Repair Manual PS–18POWER STEERING – ELECTRONIC POWER STEERING SYSTEM
PS
2. PERFORM ACTIVE TEST
HINT:
Performing the intelligent tester's ACTIVE TEST allows
relays, the VSV, actuators and other items to b

PS–18POWER STEERING – ELECTRONIC POWER STEERING SYSTEM
PS
2. PERFORM ACTIVE TEST
HINT:
Performing the intelligent tester's ACTIVE TEST allows
relays, the VSV, actuators and other items to be
operated without removing any parts. Performing the
ACTIVE TEST early in troubleshooting is one way to
save time. The DATA LIST can be displayed in the
ACTIVE TEST.
(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the ignition switch ON and turn the intelligent
tester ON.
(c) Perform the ACTIVE TEST by following the prompts
on the tester.
Combination meter
MOTOR ROTATE Motor rotation angle:
Min.: 0
Max.: 360
Power steering in operation During steering operation, motor
rotation angle value changes from
0 to 360
MOTOR VOLTAGE Motor power supply voltage:
0 V
Max.: 45.955 VPower steering in operation -
MTR TERMINAL(U) Motor terminal voltage (U phase):
Min.: 0 V
Max.: 46.667 VSteering wheel is turned While turning the steering wheel,
a value within the range of 1 V to
approximately 0.7 V less than the
battery voltage is displayed. (The
value changes according to the
steering load.)
MTR TERMINAL(V) Motor terminal voltage (V phase):
Min.: 0 V
Max.: 46.667 VSteering wheel is turned While turning the steering wheel,
a value within the range of 1 V to
approximately 0.7 V less than the
battery voltage is displayed. (The
value changes according to the
steering load.)
MTR TERMINAL(W) Motor Terminal voltage (W
phase):
Min.: 0 V
Max.: 46.667 VSteering wheel is turned While turning the steering wheel,
a value within the range of 1 V to
approximately 0.7 V less than the
battery voltage is displayed. (The
value changes according to the
steering load.)
IG ON/OFF TIMES Ignition switch ON/OFF number
of times after fail detection:
Min.: 0 times
Max.: 65535 times--
# CODES Number of detected DTCs when
freeze frame data stored:
Min.: 0
Max.: 255 --
PS ASSIST SIG Power steering assist signal:
ON or OFF-- Tester Display Measurement Item/Range Normal Condition Reference Value
Tester Display Test Part Control Range
EPS INDIC P/S indicator
ON/OFFConfirm that vehicle is stopped, engine idling

Page 1619 of 2000

TOYOTA RAV4 2006 Service Repair Manual POWER STEERING – ELECTRONIC POWER STEERING SYSTEMPS–19
PS
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If any DTCs are displayed during the DTC check, inspect the
circuit listed for these DTCs. For deta

POWER STEERING – ELECTRONIC POWER STEERING SYSTEMPS–19
PS
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If any DTCs are displayed during the DTC check, inspect the
circuit listed for these DTCs. For details of each DTC, refer to
the page indicated in the DTC chart.
Electric Power Steering System
DTC No. Detection Item Trouble Area Normal Function
Return ConditionP/S Warning Light See page
C1511/11 Torque Sensor 1
Malfunction- Steering column
assembly (Torque
sensor)
- Power steering ECUIgnition switch ON
again
PS-18
C1512/11 Torque Sensor 2
Malfunction- Steering column
assembly (Torque
sensor)
- Power steering ECUIgnition switch ON
again
PS-18
C1513/11 Torque Sensor
Deviation Excessive- Steering column
assembly (Torque
sensor)
- Power steering ECUIgnition switch ON
again
PS-18
C1514/11 Torque Sensor Power
Supply Voltage
Malfunction- Steering column
assembly (Torque
sensor)
- Power steering ECUIgnition switch ON
again
PS-18
C1521/25 Short in Motor Circuit - Power steering ECU Ignition switch ON
again
PS-21
C1524/24 Motor Terminal
Voltage Malfunction- Steering column
assembly (Torque
sensor)
- Power steering ECUIgnition switch ON
again
PS-22
C1528/12 Motor Rotation Angle
Sensor Malfunction- Steering column
assembly (Torque
sensor)
- Power steering ECUIgnition switch ON
again
PS-24
C1531/25 ECU Malfunction - Power steering ECU Ignition switch ON
again
PS-26
C1532/25 ECU Malfunction - Power steering ECU Ignition switch ON
again
PS-26
C1533/25 Temperature Sensor
Circuit is Low or High- Power steering ECU Ignition switch ON
again or after normal
confirmation
PS-26
C1534/25 EEPROM
Malfunction- Power steering ECU Ignition switch ON
again
PS-26
C1551/25 IG Power Supply
Voltage Malfunction- ECU-IG1 fuse
- IG power source
circuit
- Power steering ECUIgnition switch ON
again or after normal
confirmation
PS-27
C1552/22 PIG Power Supply
Voltage Malfunction- PIG power source
circuit
- Power steering ECUIgnition switch ON
again or after normal
confirmation
PS-29
C1554/23 Power Supply Relay
Failure- PIG power source
circuit
- Power steering ECUIgnition switch ON
again
PS-31
C1555/25 Motor Relay Welding
Failure- Power steering ECU Ignition switch ON
again
PS-31
C1581/26 Assist Map Number
Un-Writing- Power steering ECU Assist map write or
ignition switch ON
again
PS-32
U0073/49 Control Module
Communication Bus
Off- CAN
communication
systemIgnition switch ON
again
PS-34

Page 1620 of 2000

TOYOTA RAV4 2006 Service Repair Manual PS–20POWER STEERING – ELECTRONIC POWER STEERING SYSTEM
PS
HINT:
: Warning light comes on
X: Warning light turns off (normal reset)
U0105/41 Lost Communication
with Fuel Injector
Control Module

Page 1621 of 2000

TOYOTA RAV4 2006 Service Repair Manual POWER STEERING – ELECTRONIC POWER STEERING SYSTEMPS–21
PS
DESCRIPTION
The torque sensor converts the rotation torque input from the steering wheel into electric signals and
sends them to the po

Page 1622 of 2000

TOYOTA RAV4 2006 Service Repair Manual PS–22POWER STEERING – ELECTRONIC POWER STEERING SYSTEM
PS
INSPECTION PROCEDURE
(a) Check the installation condition of the torque sensor
connector.
OK:
Torque sensor connector is securely insta

Page 1623 of 2000

TOYOTA RAV4 2006 Service Repair Manual POWER STEERING – ELECTRONIC POWER STEERING SYSTEMPS–23
PS
NG
OK
2 (TRQ2) - 1 (TRQG) Steering wheel not
turned (without load)2.3 to 2.7 V
Steering wheel turned
to right with vehicle
stopped0.9

Page 1624 of 2000

TOYOTA RAV4 2006 Service Repair Manual PS–24POWER STEERING – ELECTRONIC POWER STEERING SYSTEM
PS
DESCRIPTION
The power steering ECU supplies current to the power steering motor through this circuit.
INSPECTION PROCEDURE
(a) Check for

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