TERMINALS OF ECU
CHECK MILLIMETER WAVE RADAR SENSOR
(a) Measure the voltage and resistance according to the value(s) in the table below.
HINT:
If the result is not as specified, there may be a malfunction on the wire harness side.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
A2-8 (IGB) - A2-1 (SGND) |
B - W-B |
Power source |
Ignition switch ON |
11 to 14 V |
A2-1 (SGND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
(b) Check for pulses according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
A2-3 (CA2H) - A2-1 (SGND) |
G - W-B |
CAN communication signal |
Ignition switch ON |
Pulse generation (See waveform 1) |
A2-2 (CA2L) - A2-1 (SGND) |
GR - W-B |
CAN communication signal |
Ignition switch ON |
Pulse generation (See waveform 2) |
A2-5 (CA1P) - A2-1 (SGND) |
G - W-B |
CAN communication signal |
Ignition switch ON |
Pulse generation (See waveform 1) |
A2-6 (CA1N) - A2-1 (SGND) |
R - W-B |
CAN communication signal |
Ignition switch ON |
Pulse generation (See waveform 2) |
(c) WAVEFORM 1
(1) CAN communication signal
Item |
Content |
---|---|
Terminal Name |
Between A2-3 (CA2H) and A2-1 (SGND) Between A2-5 (CA1P) and A2-1 (SGND) |
Tester Range |
1 V/DIV., 10 μsec./DIV. |
Condition |
Ignition switch ON |
HINT:
The waveform varies depending on the CAN communication signal.
(d) WAVEFORM 2
(1) CAN communication signal
Item |
Content |
---|---|
Terminal Name |
Between A2-2 (CA2L) and A2-1 (SGND) Between A2-6 (CA1N) and A2-1 (SGND) |
Tester Range |
1 V/DIV., 10 μsec./DIV. |
Condition |
Ignition switch ON |
HINT:
The waveform varies depending on the CAN communication signal.
CHECK FORWARD RECOGNITION CAMERA
(a) Measure the voltage and resistance according to the value(s) in the table below.
HINT:
If the result is not as specified, there may be a malfunction on the wire harness side.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
R5-8 (BZ) - R5-10 (GND) |
B - W-B |
Pre-collision city buzzer |
Ignition switch ON, pre-collision city buzzer not operating |
11 to 14 V |
Ignition switch ON, pre-collision city buzzer operating |
0 to 1.5 V |
|||
R5-3 (LKSW) - R5-10 (GND) |
R - W-B |
Pre-collision system cancel switch assembly |
Pre-collision system cancel switch assembly being pressed |
Below 1 Ω |
Pre-collision system cancel switch assembly not being pressed |
100 kΩ or higher |
|||
R5-7 (IGB) - R5-10 (GND) |
B - W-B |
Power source |
Ignition switch ON |
11 to 14 V |
Ignition switch off |
Below 1 V |
|||
R5-10 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
(b) Check for pulses according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
R5-5 (CA1P) - R5-10 (GND) |
R - W-B |
CAN communication signal |
Ignition switch ON |
Pulse generation (See waveform 1) |
R5-6 (CANH) - R5-10 (GND) |
G - W-B |
CAN communication signal |
Ignition switch ON |
Pulse generation (See waveform 1) |
R5-11 (CA1N) - R5-10 (GND) |
GR - W-B |
CAN communication signal |
Ignition switch ON |
Pulse generation (See waveform 2) |
R5-12 (CANL) - R5-10 (GND) |
R - W-B |
CAN communication signal |
Ignition switch ON |
Pulse generation (See waveform 2) |
(c) WAVEFORM 1
(1) CAN communication signal
Item |
Content |
---|---|
Terminal Name |
Between R5-5 (CA1P) - R5-10 (GND) Between R5-6 (CANH) - R5-10 (GND) |
Tester Range |
1 V/DIV., 10 μsec./DIV. |
Condition |
Ignition switch ON |
HINT:
The waveform varies depending on the CAN communication signal.
(d) WAVEFORM 2
(1) CAN communication signal
Item |
Content |
---|---|
Terminal Name |
Between R5-11 (CA1N) - R5-10 (GND) Between R5-12 (CANL) - R5-10 (GND) |
Tester Range |
1 V/DIV., 10 μsec./DIV. |
Condition |
Ignition switch ON |
HINT:
The waveform varies depending on the CAN communication signal.
Toyota CH-R Service Manual > Wireless Door Lock Control System(w/ Smart Key System): System Description
SYSTEM DESCRIPTION
WIRELESS DOOR LOCK CONTROL SYSTEM
The wireless door lock control system can be used to lock and unlock all doors
from a distance. The system is controlled by an electrical key transmitter sub-assembly
which sends radio waves to the electrical key and TPMS receiver assembly. ...
Toyota CH-R Service Manual > Continuously Variable Transaxle System: Acceleration Sensor Learning Value (P1589)
DESCRIPTION
The ECM stores DTC P1589 if deceleration sensor zero point calibration is not
performed or failed after system components such as the ECM are replaced.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
MIL
Me ...