TERMINALS OF ECU
CHECK ECM
HINT:
The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resistance and waveform for each pair of the terminals as displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.
Terminal No. (Symbols) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
E10-23 (VC) - E11-1 (E1)*2 |
LG - W-B |
Neutral position switch power supply |
Ignition switch ON |
4.5 to 5.5 V |
E11-1 (E1) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 V |
E11-22 (NPSW) - E9-23 (ETHW)*2 |
L - BR |
Neutral position switch signal |
Ignition switch ON, shift lever in neutral |
2.7 to 4.3 V |
Ignition switch ON, shift lever in any other than neutral |
0.7 to 1.9 V |
|||
E12-6 (+BM) - E11-1 (E1) |
GR - W-B |
Power source of throttle actuator |
Always |
11 to 14 V |
E12-27 (D) - E11-1 (E1)*1 |
R - W-B |
D shift position signal |
Ignition switch ON, shift lever in D |
11 to 14 V |
Ignition switch ON, shift lever not in D |
Below 1 V |
|||
E12-27 (D) - E11-1 (E1)*2 |
R - W-B |
Clutch switch input signal |
Ignition switch ON, clutch pedal depressed |
Below 1 V |
Ignition switch ON, clutch pedal released |
11 to 14 V |
|||
E13-7 (SFTD) - E11-1 (E1)*1 |
R - W-B |
Down-shift position switch signal |
Ignition switch ON and shift lever in S |
11 to 14 V |
Ignition switch ON and shift lever in "-" (Down-shift) |
Below 1 V |
|||
E13-8 (SFTU) - E11-1 (E1)*1 |
G - W-B |
Up-shift position switch signal |
Ignition switch ON and shift lever in S |
11 to 14 V |
Ignition switch ON and shift lever in "+" (Up-shift) |
Below 1 V |
|||
E13-15 (ST1-) - E11-1 (E1) |
V - W-B |
Stop light switch assembly signal |
Ignition switch ON, brake pedal depressed |
Below 1 V |
Ignition switch ON, brake pedal released |
11 to 14 V |
|||
E13-16 (STP) - E11-1 (E1) |
P - W-B |
Stop light switch input signal |
Brake pedal depressed |
11 to 14 V |
Brake pedal released |
Below 1 V |
|||
E13-17 (CCS) - E11-1 (E1) |
B - W-B |
Cruise control main switch output signal |
CANCEL switch ON |
1509 to 1571 Ω |
-SET switch ON |
617 to 643 Ω |
|||
+RES switch ON |
235 to 245 Ω |
|||
Cruise control main switch (ON-OFF button) not pushed |
1 MΩ or higher |
|||
Cruise control main switch (ON-OFF button) pushed |
Below 2.5 Ω |
|||
E13-32 (S) - E11-1 (E1)*1 |
P - W-B |
S shift position switch signal |
Ignition switch ON and shift lever in S, "+" or "-" |
11 to 14 V |
Ignition switch ON and shift lever not in S, "+" or "-" |
Below 1 V |
|||
E14-2 (BATT) - E11-1 (E1) |
L - W-B |
Battery (for measuring battery voltage and for ECM memory) |
Always |
11 to 14 V |
E14-20 (TC) - E11-1 (E1) |
G - W-B |
DTC output signal |
Ignition switch ON |
11 to 14 V |
Ignition switch ON, connect terminals TC and CG of DLC3 |
Below 2 V |
NOTICE:
Do not apply excessive force to the connector. If a force of 10 kg or more is applied, the connector may be broken.
CHECK FORWARD RECOGNITION CAMERA
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F46-8 (BZ) - F46-10 (GND) |
L - W-B |
Skid control buzzer output |
Ignition switch to ON, buzzer not sounding |
11 to 14 V |
Ignition switch to ON, buzzer sounding |
Below 1 V |
|||
F46-7 (IGB) - F46-10 (GND) |
BE - W-B |
Power source |
Ignition switch to ON |
11 to 14 V |
Ignition switch off |
Below 1 V |
|||
F46-5 (CA1P) - F46-10 (GND) |
L - W-B |
CAN communication signal |
Ignition switch to ON |
Pulse generation (See waveform 1) |
F46-11 (CA1N) - F46-10 (GND) |
W - W-B |
CAN communication signal |
Ignition switch to ON |
Pulse generation (See waveform 2) |
F46-6 (CANH) - F46-10 (GND) |
B - W-B |
CAN communication signal |
Ignition switch to ON |
Pulse generation (See waveform 1) |
F46-12 (CANL) - F46-10 (GND) |
W - W-B |
CAN communication signal |
Ignition switch to ON |
Pulse generation (See waveform 2) |
F46-3 (LKSW) - F46-10 (GND) |
GR - W-B |
Steering pad switch assembly signal (distance control signal) |
Ignition switch to ON, steering pad switch assembly (distance control switch) off |
4.75 to 5.25 V |
Ignition switch to ON, steering pad switch assembly (distance control switch) on |
Below 1 V |
|||
F46-10 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
(a) Waveform 1
(1) CAN communication signal
Item |
Content |
---|---|
Tester Connection |
|
Tool Setting |
1 V/DIV., 10 μsec./DIV. |
Condition |
Ignition switch to ON |
HINT:
The waveform varies depending on the CAN communication signal.
(b) Waveform 2
(1) CAN communication signal
Item |
Content |
---|---|
Tester Connection |
|
Tool Setting |
1 V/DIV., 10 μsec./DIV. |
Condition |
Ignition switch to ON |
HINT:
The waveform varies depending on the CAN communication signal.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
M8-1 (SGND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
M8-2 (CA2L) - M8-1 (SGND) |
W - W-B |
CAN communication signal |
Ignition switch to ON |
Pulse generation (See waveform 2) |
M8-3 (CA2H) - M8-1 (SGND) |
W-B - W-B |
CAN communication signal |
Ignition switch to ON |
Pulse generation (See waveform 1) |
M8-5 (CA1P) - M8-1 (SGND) |
B - W-B |
CAN communication signal |
Ignition switch to ON |
Pulse generation (See waveform 1) |
M8-6 (CA1N) - M8-1 (SGND) |
W - W-B |
CAN communication signal |
Ignition switch to ON |
Pulse generation (See waveform 2) |
M8-8 (IGB) - M8-1 (SGND) |
LG - W-B |
Power source |
Ignition switch to ON |
11 to 14 V |
CHECK MILLIMETER WAVE RADAR SENSOR
(a) Waveform 1
(1) CAN communication signal
Item |
Content |
---|---|
Tester Connection |
|
Tool Setting |
1 V/DIV., 10 μsec./DIV. |
Condition |
Ignition switch to ON |
HINT:
The waveform varies depending on the CAN communication signal.
(b) Waveform 2
(1) CAN communication signal
Item |
Content |
---|---|
Tester Connection |
|
Tool Setting |
1 V/DIV., 10 μsec./DIV. |
Condition |
Ignition switch to ON |
HINT:
The waveform varies depending on the CAN communication signal.
Software Incompatibility with Body Control Module "B" (U1331)
DESCRIPTION
This DTC is stored when the destination information of the main body ECU (multiplex
network body ECU) does not match that of the blind spot monitor sensors.
DTC Code
DTC Detection Condition
Trouble Area
U1331
Destination in ...
Installation
INSTALLATION
CAUTION / NOTICE / HINT
NOTICE:
When replacing the windshield glass of a vehicle equipped with a forward recognition
camera, make sure to use a Toyota genuine part. If a non-Toyota genuine part is
used, the forward recognition camera may not be able to be installed due to a missi ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT CAMSHAFT TIMING GEAR BOLT
(a) Remove the camshaft timing oil control solenoid assembly (See page
).
(b) Check that the plunger strokes when the plunger in the center of
the camshaft timing gear bolt is pressed.
Standard stroke:
4 ...