Toyota Venza: Terminals Of Ecu
TERMINALS OF ECU
1. CHECK POWER STEERING ECU
HINT:
As connector z8 uses a lock lever, each terminal cannot be checked while the connector is still connected to the power steering ECU.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
|---|---|---|
|
z8-1 (V) |
W |
V phase motor output |
|
z8-2 (U) |
B |
U phase motor output |
|
z8-3 (W) |
R |
W phase motor output |
(a) Measure the voltage and resistance according to the value(s) in the table below.
NOTICE:
When the P/S warning light is illuminated during a malfunction, the fail-safe function may cause the voltage of the power steering ECU terminals to become 0 V.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
D19-1 (PIG) - D19-2 (PGND) |
R - B |
Power source |
Always |
11 to 14 V |
|
D19-2 (PGND) - Body ground |
B - Body ground |
Power ground |
Always |
Below 1 Ω |
|
D20-1 (CANH) - D20-7 (CANL) |
BR - W |
CAN communication line |
Ignition switch off |
54 to 69 Ω |
|
D20-6 (IG) - D19-2 (PGND) |
GR - B |
IG power source |
Ignition switch ON |
11 to 14 V |
|
z9-1 (RZV) - D19-2 (PGND) |
R - B |
Rotation angle sensor excitation output signal |
Engine running, steering wheel being turned |
-2.42 to 2.42 V |
|
z9-3 (RZG) - D19-2 (PGND) |
B - B |
Rotation angle sensor excitation circuit GND |
Always |
Below 1 Ω |
|
z9-5 (RZCS) - D19-2 (PGND) |
L - B |
Rotation angle sensor COS aspect output signal |
Engine running, steering wheel being turned |
-0.73 to 0.73 V |
|
z9-6 (RZSN) - D19-2 (PGND) |
Y - B |
Rotation angle sensor SIN aspect output signal |
Engine running, steering wheel being turned |
-0.73 to 0.73 V |
|
z10-5 (TRQ1) - z10-8 (TRQG) |
W - B |
Torque sensor signal |
Engine running, steering wheel not turned (without load) |
2.3 to 2.7 V |
|
Engine running, steering wheel turned to right with vehicle stopped |
2.5 to 3.8 V |
|||
|
Engine running, steering wheel turned to left with vehicle stopped |
1.2 to 2.5 V |
|||
|
z10-6 (TRQV) - z10-8 (TRQG) |
R - B |
Torque sensor voltage source |
Ignition switch ON |
4.5 to 5.5 V |
|
z10-7 (TRQ2) - z10-8 (TRQG) |
Y - B |
Torque sensor signal |
Engine running, steering wheel not turned (without load) |
2.3 to 2.7 V |
|
Engine running, steering wheel turned to right with vehicle stopped |
1.2 to 2.5 V |
|||
|
Engine running, steering wheel turned to left with vehicle stopped |
2.5 to 3.8 V |
|||
|
z10-8 (TRQG) - Body ground |
B - Body ground |
Torque sensor ground |
Always |
Below 1 Ω |
If the result is not as specified, the ECU may have a malfunction.
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are lis ...
Diagnosis System
DIAGNOSIS SYSTEM
1. CHECK DLC3
(a) Check the DLC3 (See page ).
2. FUNCTION OF P/S WARNING LIGHT
(a) When a malfunction is detected in the power steering system, the P/S warning
light on the acc ...
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Installation
INSTALLATION
PROCEDURE
1. INSTALL STUD BOLT (for LH Side)
(a) Install the stud bolt.
Torque:
17 N·m {173 kgf·cm, 13 ft·lbf}
2. INSTALL STUD BOLT (for RH Side)
HINT:
Perform the same proc ...
Short in Passenger Side Airbag Variable Vent Hole Squib Circuit (B181A/7A-B181D/7A)
DESCRIPTION
The passenger side airbag variable vent hole squib circuit consists of the center
airbag sensor assembly and front passenger airbag assembly.
The center airbag sensor assembly uses this circuit to deploy the airbag when
deployment conditions ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT NO. 1 ULTRASONIC SENSOR
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
Specified ...
0.134