TERMINALS OF ECU
1. CHECK CLEARANCE WARNING ECU
(a) Disconnect the F95 clearance warning ECU assembly connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F95-1 (IG) - F95-22 (E) |
L - W-B |
Back sonar or clearance sonar switch assembly power source signal |
Ignition switch ON, back sonar or clearance sonar switch assembly on |
11 to 14 V |
Ignition switch ON, back sonar or clearance sonar switch assembly off |
Below 1 V |
|||
F95-22 (E) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
(c) Reconnect the F95 clearance warning ECU assembly connector.
(d) Measure the voltage and check for pulses according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F95-5 (SPD) - F95-22 (E) |
SB - W-B |
Vehicle speed signal |
Ignition switch ON, back sonar or clearance sonar switch on |
Alternating between 1.5 to 4.5 V |
F95-7 (PL) - F95-22 (E) |
L - W-B |
Shift position signal |
Ignition switch ON, shift lever in P |
11 to 14 V |
Ignition switch ON, shift lever not in P |
Below 1 V |
|||
F95-9 (L4) - F95-22 (E) |
B - W-B |
Front ultrasonic sensor indicator signal (Front right sensor) |
Clearance warning indicator for front right sensor illuminates |
Below 3 V |
F95-12 (E6) - F95-22 (E) |
W - W-B |
Front ultrasonic sensor ground (Front left sensor) |
Always |
Below 1 Ω |
F95-13 (S6) - F95-22 (E) |
B - W-B |
Front ultrasonic sensor indicator signal (Front left sensor) |
Ignition switch ON, back sonar or clearance sonar switch on, sensor detects obstacle |
Pulse generation (See waveform 1) |
F95-15 (E4) - F95-22 (E) |
LG - W-B |
Rear ultrasonic sensor ground (Rear center left sensor) |
Always |
Below 1 Ω |
F95-16 (S4) - F95-22 (E) |
L - W-B |
Rear ultrasonic sensor indicator signal (Rear center left sensor) |
Ignition switch ON, back sonar or clearance sonar switch on, shift lever in R |
Pulse generation (See waveform 1) |
F95-17 (E1) - F95-22 (E) |
R - W-B |
Rear ultrasonic sensor ground (Rear right sensor) |
Always |
Below 1 Ω |
F95-18 (S1) - F95-22 (E) |
W - W-B |
Rear ultrasonic sensor indicator signal (Rear right sensor) |
Ignition switch ON, back sonar or clearance sonar switch on, shift lever in R |
Pulse generation (See waveform 1) |
F95-19 (CBZ) - F95-22 (E) |
L - W-B |
No. 1 clearance warning buzzer signal |
Buzzer not sounding |
Below 1 V |
Sonar detecting obstacle (Buzzer sounding) |
11 to 14 V |
|||
F95-20 (FF) - F95-22 (E) |
P - W-B |
Clearance warning buzzer signal |
Buzzer sounding |
Pulse generation (See waveform 1) |
F95-23 (RL) - F95-22 (E) |
R - W-B |
Shift position signal |
Ignition switch ON, shift lever in R |
11 to 14 V |
Ignition switch ON, shift lever not in R |
Below 1 V |
|||
F95-24 (TL) - F95-22 (E) |
G - W-B |
Illumination signal |
Ignition switch ON, light control switch on |
11 to 14 V |
Ignition switch ON, light control switch off |
Below 1 V |
|||
F95-26 (L5) - F95-22 (E) |
P - W-B |
Ultrasonic sensor (front left sensor) indicator signal |
Clearance warning indicator for front left sensor illuminates |
Below 3 V |
F95-28 (L1) - F95-22 (E) |
Y - W-B |
Ultrasonic sensor (rear right sensor) indicator signal |
Clearance warning indicator for rear right sensor illuminates |
Below 3 V |
F95-29 (L2) - F95-22 (E) |
GR - W-B |
Ultrasonic sensor (rear left sensor) indicator signal |
Clearance warning indicator for rear left sensor illuminates |
Below 3 V |
F95-30 (L3) - F95-22 (E) |
SB - W-B |
Ultrasonic sensor (rear center right and left sensor) indicator signal |
Clearance warning indicator for back sensor illuminates |
Below 3 V |
F95-31 (L10) - F95-22 (E) |
LG - W-B |
Clearance warning ECU assembly signal |
Clearance warning indicator's operation indicator illuminates |
Below 3 V |
F95-33 (E5) - F95-22 (E) |
G - W-B |
Front ultrasonic sensor ground (Front right sensor) |
Always |
Below 1 Ω |
F95-34 (S5) - F95-22 (E) |
L - W-B |
Front ultrasonic sensor indicator signal (Front right sensor) |
Ignition switch ON, back sonar or clearance sonar switch on, sensor detects obstacle |
Pulse generation (See waveform 1) |
F95-37 (E2) - F95-22 (E) |
R - W-B |
Rear ultrasonic sensor ground (Rear left sensor) |
Always |
Below 1 Ω |
F95-38 (S2) - F95-22 (E) |
G - W-B |
Rear ultrasonic sensor communication signal (Rear left sensor) |
Ignition switch ON, back sonar or clearance sonar switch on, shift lever in R |
Pulse generation (See waveform 1) |
F95-39 (E3) - F95-22 (E) |
Y - W-B |
Rear ultrasonic sensor ground (Rear center right sensor) |
Always |
Below 1 Ω |
F95-40 (S3) - F95-22 (E) |
B - W-B |
Rear ultrasonic sensor communication signal (Rear center right sensor) |
Ignition switch ON, back sonar or clearance sonar switch on, shift lever in R |
Pulse generation (See waveform 1) |
(e) Using an oscilloscope, check waveform 1.
Item |
Content |
---|---|
Terminal No. (Symbol) |
F95-12 (E6) - F95-13 (S6) F95-15 (E4) - F95-16 (S4) F95-17 (E1) - F95-18 (S1) F95-33 (E5) - F95-34 (S5) F95-37 (E2) - F95-38 (S2) F95-39 (E3) - F95-40 (S3) |
Tool Setting |
2 V/DIV., 0.1 msec./DIV. |
Condition |
Ignition switch ON, back sonar or clearance sonar switch on, shift lever in R |
*a |
Ultrasonic sensor is normal |
*b |
Open circuit in ultrasonic sensor |
Lost Communication with ECM / PCM "A" (U0100,U0129,U0131,U0151)
DESCRIPTION
The combination meter assembly communicates with the ECM via the CAN communication
system (CAN No. 1 Bus).
DTC Code.
DTC Detection Condition
Trouble Area
U0100
IG voltage is 9.5 V or ...
Steering Angle Sensor Unusual Bank Angle Detected (C1440)
DESCRIPTION
If the skid control ECU determines that the vehicle is being driven at a steep
bank angle, the skid control ECU stores DTC C1440 while VSC operation is temporarily
disabled.
It is not a malfunction if the system and sensor circuits are normal ...