Toyota Tacoma (2015-2018) Service Manual: Terminals Of Ecu
TERMINALS OF ECU
1. CLEARANCE WARNING ECU ASSEMBLY
(a) Disconnect the C30 connector from the clearance warning ECU assembly.
(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 |
|---|---|---|---|---|
|
C30-9 (CLSW) - C30-30 (E) |
Y - 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 |
|
C30-9 (CLSW) - C30-30 (E) |
Y - W-B |
Back sonar or clearance sonar switch assembly power source signal |
Ignition switch ON, back sonar or clearance sonar switch assembly off |
Below 1 V |
|
C30-1 (IG) - C30-30 (E) |
P - W-B |
IG power source signal |
Ignition switch off |
Below 1 V |
|
Ignition switch ON |
11 to 14 V |
|||
|
C30-30 (E) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
(c) Reconnect the C30 connector to the clearance warning ECU assembly.
(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 |
|---|---|---|---|---|
|
C30-22 (BOR) - C30-30 (E) |
BE - W-B |
Power source for rear sensor circuit |
Ignition switch off |
Below 1 V |
|
Ignition switch ON, back sonar or clearance sonar switch assembly on |
7.2 to 8.8 V |
|||
|
C30-13 (ER) - C30-30 (E) |
R - W-B |
Clearance warning buzzer signal |
Buzzer sounding |
Pulse generation (See waveform 1) |
|
C30-23 (E1) - C30-30 (E) |
B - W-B |
Ground for rear clearance sonar |
Always |
Below 1 V |
|
C30-24 (SOR) - C30-30 (E) |
V - W-B |
Rear sensor communication signal (Rear clearance sonar sensor) |
Ignition switch ON, back sonar or clearance sonar switch assembly on, shift lever in R |
Pulse generation (See waveform 2) |
(e) Using an oscilloscope, check waveform 1.
(1) Waveform 1 (Reference)
|
Item |
Content |
|---|---|
|
Terminal No. (Symbol) |
C30-13 (ER) - C30-30 (E) |
|
Tool Setting |
2 V/DIV., 500 μsec./DIV. |
|
Vehicle Condition |
When sonar detects obstacle (buzzer sounds) |
|
Buzzer volume |
M2 (Medium volume) |
HINT:
The amplitude of the waveform changes according to the set volume.
(f) Using an oscilloscope, check waveform 2.
(1) Waveform 2 (Reference)
|
Item |
Content |
|---|---|
|
Terminal No. (Symbol) |
C30-24 (SOR) - C30-30 (E) |
|
Tool Setting |
5 V/DIV., 1 msec./DIV. |
|
Condition |
Ignition switch ON, back sonar or clearance sonar switch assembly on, shift lever in R |
HINT:
The waveforms for CH1 and CH2 are same.
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. DESCRIPTION
(a) When troubleshooting a vehicle with a diagnosis system, the only difference
from the usual troubleshooting procedure is connecting the Techstream to the vehicle ...
Other materials:
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a trouble code is output during the DTC check, inspect the trouble areas listed
for that code. For details of the code, refer to "See page" in the DTC chart.
Wireless Door Lock Control System
DTC Code
Detection Item
...
Parts Location
PARTS LOCATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)
(a) Disconnect the S50 sliding roof ECU (sliding roof drive gear sub-assembly)
connector.
(b) Measure the resistance and voltage according to the value(s) in the table
below.
HINT:
Measure the values on the ...
