TERMINALS OF ECU
1. CLEARANCE WARNING ECU ASSEMBLY
(a) Disconnect the D79 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 |
---|---|---|---|---|
D79-9 (CLSW) - D79-30 (E) |
B - W |
Back sonar or clearance sonar switch assembly power source signal |
Engine switch on (IG), clearance sonar main switch on |
11 to 14 V |
D79-9 (CLSW) - D79-30 (E) |
B - W |
Back sonar or clearance sonar switch assembly power source signal |
Engine switch on (IG), clearance sonar main switch off |
Below 1 V |
D79-1 (IG) - D79-30 (E) |
GR - W |
IG power source signal |
Engine switch off |
Below 1 V |
Engine switch on (IG) |
11 to 14 V |
|||
D79-30 (E) - Body ground |
W - Body ground |
Ground |
Always |
Below 1 Ω |
(c) Reconnect the D79 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 |
---|---|---|---|---|
D79-22 (BOR) - D79-30 (E) |
V - W |
Power source for rear sensor circuit |
Engine switch off |
Below 1 V |
Engine switch on (IG), clearance sonar main switch on |
7.2 to 8.8 V |
|||
D79-8 (SOF) - D79-30 (E) |
LG - W |
Front sensor communication signal (Front clearance sonar sensor) |
Engine switch on (IG), clearance sonar main switch on, shift lever in R |
Pulse generation (See waveform 2) |
D79-13 (ER) - D79-30 (E) |
Y - W |
Clearance warning buzzer signal |
Buzzer sounding |
Pulse generation (See waveform 1) |
D79-23 (E1) - D79-30 (E) |
L - W |
Ground for rear clearance sonar |
Always |
Below 1 V |
D79-6 (E5) - D79-30 (E) |
BR - W |
Ground for front clearance sonar |
Always |
Below 1 V |
D79-4 (BOF) - D79-30 (E) |
W - W |
Power source for front sensor circuit |
Engine switch off |
Below 1 V |
Engine switch on (IG), clearance sonar main switch on |
7.2 to 8.8 V |
|||
D79-24 (SOR) - D79-30 (E) |
Y - W |
Rear sensor communication signal (Rear clearance sonar sensor) |
Engine switch on (IG), clearance sonar main switch 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) |
D79-13 (ER) - D79-30 (E) |
Tool Setting |
2 V/DIV., 500 μsec./DIV. |
Vehicle Condition |
When sonar detects obstacle (buzzer sounds) |
Buzzer volume |
Buzzer sounding |
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) |
|
Tool Setting |
5 V/DIV., 1 msec./DIV. |
Condition |
Engine switch on (IG), clearance sonar main switch on, shift lever in R |
HINT:
The waveforms for CH1 and CH2 are same.
Driver Side Door ECU Communication Stop (B2321)
DESCRIPTION
This DTC is stored when LIN communication between the power window regulator
motor assembly (for driver side) and main body ECU (driver side junction block assembly)
stops for more than 10 seconds.
DTC No.
DTC Detection ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT FUEL INJECTOR ASSEMBLY
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
Specified C ...
Portable Player cannot be Connected Manually/Automatically
CAUTION / NOTICE / HINT
HINT:
Some versions of "Bluetooth" compatible audio players may not function properly,
or the functions may be limited using the radio and display receiver assembly, even
if the portable audio player itself can play file ...