2006 TOYOTA RAV4 steering column

SR–18STEERING COLUMN – STEERING COLUMN ASSEMBLY
SR
5. INSPECT STEERING LOCK OPERATION
(a) Remove the key and check that the steering lock
function is activated.
(b) Insert the key, turn the ignition switch ON (ACC) and
check that the steering lock function is deactivated.
6. INSTALL STEERING COLUMN UPPER W/ SWITCH
BRACKET ASSEMBLY
(a) Fix the steering column assembly in a vise between
aluminum plates.
NOTICE:
Do not overtighten the vise.
(b) Install the steering column upper with switch bracket
and steering column clamp upper with new steering
lock set bolt, and then tighten the bolts until their
heads come off.
7. INSTALL TRANSPONDER KEY AMPLIFIER
(a) Attach the 2 claws and install the transponder key
amplifier onto the steering column upper with the
switch bracket.
C128817
C128818
C128819
C128820

STEERING COLUMN – STEERING COLUMN ASSEMBLYSR–19
SR
INSTALLATION
1. INSTALL STEERING COLUMN ASSEMBLY
(a) Install the steering column onto the instrument panel
reinforcement with the 3 bolts.
Torque: 25 N*m (255 kgf*cm, 18 ft.*lbf)
(b) Connect all the connectors and clamp the wire
harnesses onto the steering column bracket.
2. INSTALL BRAKE PEDAL SUPPORT ASSEMBLY
(a) Install the brake pedal support (see page BR-16).
3. INSTALL NO.2 STEERING INTERMEDIATE SHAFT
ASSEMBLY
(a) Align the matchmarks on steering intermediate shaft
and the steering sliding yoke and temporarily install
them with bolt B.
Torque: 35 N*m (360 kgf*cm, 26 ft.*lbf)
(b) Align the matchmarks on the steering sliding yoke
and steering gear and install them with bolt A.
Torque: 35 N*m (360 kgf*cm, 26 ft.*lbf)
4. INSTALL COLUMN HOLE COVER SILENCER SHEET
(a) Install the column hole cover plate with the 2 clips.
(b) Install the floor carpet.
5. INSTALL LOWER INSTRUMENT PANEL FINISH
PANEL (See page IP-25)
C128489
C128805E02
C128486

SR–20STEERING COLUMN – STEERING COLUMN ASSEMBLY
SR
6. CONNECT POWER STEERING ECU
(a) Connect the 2 steering column connectors to the
power steering ECU.
(b) Install the power steering motor wire harness and
torque sensor wire harness clamps onto the side of
the power steering ECU.
(c) Tilt the steering column assembly up and down to
make sure that the power steering motor wire
harness and torque sensor wire harness do not
interfere with any components.
7. INSTALL INSTRUMENT PANEL SUB-ASSEMBLY
(a) Install the instrument panel (see page IP-9).
8. INSTALL COMBINATION SWITCH ASSEMBLY
(a) Install the turn signal switch onto the steering
column with the clamp.
9. INSTALL SPIRAL CABLE SUB-ASSEMBLY
(a) Install the spiral cable onto the turn signal switch.
(b) Connect all the connectors to the turn signal switch
with spiral cable.
10. INSTALL STEERING COLUMN COVER
(a) Attach the claw to install the upper steering column
cover.
C128905E02
C128800
C128493E04
C128492

STEERING COLUMN – STEERING COLUMN ASSEMBLYSR–21
SR
(b) Attach the 4 claws to install the lower steering
column cover.
11. INSTALL STEERING WHEEL ASSEMBLY
(a) Align the matchmarks and install the steering wheel
onto the steering column.
(b) Install the nut.
Torque: 50 N*m (510 kgf*cm, 37 ft.*lbf)
(c) Connect all the connectors to the spiral cable.
12. INSTALL STEERING PAD (See page RS-336)
13. POSITION FRONT WHEELS FACING STRAIGHT
AHEAD
14. CONNECT CABLE TO NEGATIVE BATTERY
TERMINAL
15. INSPECT SRS WARNING LIGHT
(a) Inspect the SRS warning light (see page RS-52).
C128491
C132123E02

PS–8POWER STEERING – ELECTRONIC POWER STEERING SYSTEM
PS
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms are
listed in order of probability in the "Suspected area" column of
the table. Check each symptom by checking the suspected
areas in the order they are listed. Replace parts as
necessary.
Electronic power steering system
Symptom Suspected area See page
Heavy steering1. Front tires (improperly inflated, unevenly worn)TW-1
2. Front wheel alignment (incorrect)SP-3
3. Front suspension (lower ball joint)SP-27
4. Steering gear assemblyPS-42
5. Power steering motor PS-25
6. Power source voltage of power steering ECUPS-37
7. Power steering ECUPS-46
Steering effort differs between turning right and left, or
steering effort uneven1. Front tires (improperly inflated, unevenly worn)TW-1
2. Front wheel alignment (incorrect)SP-3
3. Front suspension (lower ball joint)SP-27
4. Steering gear assemblyPS-42
5. Torque sensor (built into steering column) PS-22
6. Steering column assemblySR-11
7. Power steering motor PS-25
8. Power steering ECUPS-46
While driving, steering effort does not change in
accordance with vehicle speed or steering wheel does
not return properly1. Front suspension (lower ball joint)SP-27
2. Speed sensorBC-28
3. Skid control ECUBC-41
4. Torque sensor (built into steering column) PS-22
5. Power steering motor PS-25
6. Power steering ECUPS-46
7. Controlling CAN communication systemCA-8
Friction occurs when turning steering wheel during low
speed driving1. Power steering motor PS-25
2. Steering column assemblySR-11
High-pitched sound (squeaking) occurs when turning
steering wheel slowly with vehicle stopped1. Power steering motor PS-25
Steering wheel vibrates and noise occurs when turning
steering wheel with vehicle stopped1. Power steering motor PS-25
2. Steering column assemblySR-11
P/S warning always indicated on combination meter1. Power source voltage of power steering ECUPS-37
2. Combination meterME-53
3. Power steering ECUPS-46

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

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 power steering ECU.
WIRING DIAGRAM
DTC C1511/11 Torque Sensor 1 Malfunction
DTC C1512/11 Torque Sensor 2 Malfunction
DTC C1513/11 Torque Sensor Deviation Excessive
DTC C1514/11Torque Sensor Power Supply Voltage Malfunc-
tion
DTC No. DTC Detection Condition Trouble Area
C1511/11 Torque sensor malfunction • Torque sensor (built into steering column
assembly)
• Power steering ECU
• Connector C1512/11
C1513/11
C1514/11
C128931E01

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
stopped0.95 to 2.5 V
Steering wheel turned
to left with vehicle
stopped2.5 to 4.04 V
4 (TRQF) - 1 (TRQG) Always 3.35 to 3.37 V
3 (TRQV) - 1 (TRQG) Always 8.5 to 10.5 V
REPLACE STEERING COLUMN ASSEMBLY
Tester Connection Condition Specified Condition
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE