2006 TOYOTA RAV4 wiring

BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEMBC–47
BC
(d) Measure the voltage of the wire harness side
connector.
If the result is not as specified, the junction block
(ECU) may be a malfunction.
Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition
PKB (ID-4) - Body ground B - Body ground Parking brake switch input Parking brake switch ON Below 1 V
PKB (ID-4) - Body ground B - Body ground Parking brake switch input Parking brake switch OFF 10 to 14 V

POWER STEERING – ELECTRONIC POWER STEERING SYSTEMPS–9
PS
TERMINALS OF ECU
1. CHECK POWER STEERING ECU
HINT:
Measurements cannot be performed on the C connector
side of the power steering ECU.
(a) Measure the voltage and resistance of the
connectors.
F100917E04
Symbols Wiring Color Terminal Description
U W U phase motor output
V B V phase motor output
W W-R W phase motor output
Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition
PIG (A1-1) - PGND (A1-2) W-B - W-B Power source Always 10 to 14 V
IG (E18-5) - PGND (A1-2) L - W-B IG power source Ignition switch ON 10 to 14 V
TRQ1 (e1-6) - TRQG (e1-
1)G - B Torque sensor signal Ignition switch ON
Steering wheel not turned
(without load)2.3 to 2.7 V
Ignition switch ON
Steering wheel turned to
right with vehicle stopped2.5 to 4.04 V
Ignition switch ON
Steering wheel turned to
left with vehicle stopped0.95 to 2.5 V
TRQ2 (e1-2) - TRQG (e1-
1)Y - B Torque sensor signal Ignition switch ON
Steering wheel not turned
(without load)2.3 to 2.7 V
Ignition switch ON
Steering wheel turned to
right with vehicle stopped0.95 to 2.5 V
Ignition switch ON
Steering wheel turned to
left with vehicle stopped2.5 to 4.04 V
TRQF (e1-4) - TRQG (e1-
1)W - B Torque sensor reference
voltageIgnition switch ON 3.35 to 3.37 V
TRQV (e1-3) - TRQG (e1-
1)R - B Torque sensor voltage
sourceIgnition switch ON 8.5 to 10.5 V
TRQG (e1-1) - Body
groundB - Body ground Torque sensor ground Always Below 1

PS–10POWER STEERING – ELECTRONIC POWER STEERING SYSTEM
PS
If the result is not as specified, the ECU may have a
malfunction.
DIAGNOSIS SYSTEM
1. CHECK DLC3
(a) Check the DLC3:
The power steering ECU uses CAN (ISO11898-1)
and ISO9141-2 for communication protocol. The
terminal arrangement of the DLC3 complies with
SAE J1962 and matches the ISO9141-2 format.
NOTICE:
*: Before measuring the resistance, leave the
vehicle as is for at least 1 minute and do not
operate the ignition switch, other switches or
the doors.
If the result is not as specified, the DLC3 may have
a malfunction. Repair or replace the harness and
connector.
HINT:
Connect the cable of the intelligent tester to the
DLC3, turn the ignition switch ON and attempt to
use the tester. If the display indicates that a
communication error has occurred, there is a
problem either with the vehicle or with the tester.
PGND (A1-2) - Body
groundW-B - Body ground Power ground Always Below 1
C1 (e2-1) - PGND (A1-2) R - W-B Resolver signal Ignition switch ON
Steering wheel is turned0.68 to 4.42 V
C2 (e2-5) - PGND (A1-2) L - W-B Resolver signal Ignition switch ON
Steering wheel is turned0.68 to 4.42 V
S1 (e2-2) - PGND (A1-2) B - W-B Resolver signal Ignition switch ON
Steering wheel is turned0.68 to 4.42 V
S2 (e2-6) - PGND (A1-2) Y - W-B Resolver signal Ignition switch ON
Steering wheel is turned0.68 to 4.42 V
R1 (e2-4) - PGND (A1-2) W - W-B Resolver excitation signal Ignition switch ON
Steering wheel is turned2.9 to 5.1 V
R2 (e2-8) - PGND (A1-2) G - W-B Resolver excitation signal Ignition switch ON
Steering wheel is turned2.9 to 5.1 V
CANH (E18-2) - CANL
(E18-8)Y - W CAN communication line Ignition switch OFF 54 to 67
Symbols (Terminal No.) Wiring Color Terminal Description ConditionSpecified Condition
H100769E43
Symbols (Terminal No.) Terminal Description Condition Specified Condition
SIL (7) - SG (5) Bus [+] line During transmission Pulse generation
CG (4) - Body ground Chassis ground Always Below 1
SG (5) - Body ground Signal ground Always Below 1
BAT (16) -Body ground Battery positive Always 11 to 14 V
CANH (6) - CANL (14) HIGH-level CAN bus line Ignition switch OFF*54 to 67
CANH (6) - Battery positive HIGH-level CAN bus line Ignition switch OFF* 1 M or higher
CANH (6) - CG (4) HIGH-level CAN bus line Ignition switch OFF* 200
or higher
CANL (14) - Battery positive LOW-level CAN bus line Ignition switch OFF* 1 M
or higher
CANL (14) - CG (4) LOW-level CAN bus line Ignition switch OFF* 200
or higher

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–25
PS
DESCRIPTION
The power steering ECU supplies the current to the power steering motor through the motor circuit.
WIRING DIAGRAM
INSPECTION PROCEDURE
(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) Select the items "MTR TERMINAL(U)", "MTR
TERMINAL(V)", "MTR TERMINAL(W)" in the DATA LIST
and read the value displayed on the intelligent tester.
Power steering ECU
DTC C1524/24 Motor Terminal Voltage Malfunction
DTC No. DTC Detection Condition Trouble Area
C1524/24 Short (or open) in motor circuit or abnormal
voltage or current in motor circuit• Steering column assembly
• Power steering ECU
1READ VALUE OF INTELLIGENT TESTER (MOTOR VOLTAGE)
C128932E01
Item Item Description: Range
(Display)Inspection Condition Reference Value
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.)

POWER STEERING – ELECTRONIC POWER STEERING SYSTEMPS–27
PS
DESCRIPTION
The motor rotation angle sensor detects the motor rotation angle and sends this information to the power
steering ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Check the installation condition of the motor rotation
angle sensor connector.
OK:
Motor rotation angle sensor connector is securely
connected to the power steering ECU.
Result
DTC C1528/12 Motor Rotation Angle Sensor Malfunction
DTC No. DTC Detection Condition Trouble Area
C1528/12 Motor rotation angle sensor malfunction • Steering column assembly
• Power steering ECU
1CHECK CONNECTOR CONNECTION CONDITION
C128934E01
Result Proceed to
NG A
OK B

PS–30POWER STEERING – ELECTRONIC POWER STEERING SYSTEM
PS
DESCRIPTION
The power steering ECU distinguishes the ignition switch status as ON or OFF through the IG power
source circuit.
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the ignition switch ON.
(c) Select the item "IG SUPPLY" in the DATA LIST and read
the value displayed on the intelligent tester.
Power steering ECU
OK
NG
DTC C1551/25 IG Power Supply Voltage Malfunction
DTC No. Detection Condition Trouble Area
C1551/25 IG power source circuit malfunction inside
ECU• ECU-IG1 fuse
• IG power source circuit
• Power steering ECU
1READ VALUE OF INTELLIGENT TESTER (IG POWER SUPPLY)
B128053E03
Item Item Description: Range
(Display)Inspection Condition Specified Condition
IG SUPPLY IG power supply:
Min.: 0 V
Max.: 20.1531 VIgnition switch ON 10 to 14 V
CHECK INTERMITTENT PROBLEMS

PS–32POWER STEERING – ELECTRONIC POWER STEERING SYSTEM
PS
DESCRIPTION
When a problem occurs in the system, the power source relay circuit is shut off to stop the power assist.
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the ignition switch ON.
(c) Select the item "PIG SUPPLY" in the DATA LIST and
read the value displayed on the intelligent tester.
Power steering ECU
OK
NG
DTC C1552/22 PIG Power Supply Voltage Malfunction
DTC No. DTC Detection Condition Trouble Area
C1552/22 PIG power source circuit malfunction inside
ECU• PIG power source circuit
• Power steering ECU
1READ VALUE OF INTELLIGENT TESTER (PIG POWER SUPPLY)
B128054E05
Item Item Description: Range
(Display)Inspection Condition Specified Condition
PIG SUPPLY PIG power supply:
Min.: 0 V
Max.: 20.1531 VPower steering in operation 10 to 14 V
CHECK INTERMITTENT PROBLEMS