TERMINALS OF ECU
1. AIR CONDITIONING AMPLIFIER
(a) Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F87-9 (ROUT) - Body ground |
LG - Body ground |
Output climate control signal (Front passenger side) |
Engine switch on (IG) Refreshing seat switch RH blower side level 3 |
Pulse generation (see waveform 1) |
F87-10 (LOUT) - Body ground |
L - Body ground |
Output climate control signal (Driver side) |
Engine switch on (IG) Refreshing seat switch LH blower side level 3 |
Pulse generation (see waveform 1) |
F87-15 (SW 5) - Body ground |
W - Body ground |
Input climate control signal (Front passenger side) |
Engine switch on (IG) Refreshing seat switch RH level 0 |
4.5 to 5.5 V |
Engine switch on (IG) Refreshing seat switch RH blower side level 3 |
Below 1 V |
|||
F87-16 (SW 4) - Body ground |
V - Body ground |
Input climate control signal (Driver side) |
Engine switch on (IG) Refreshing seat switch LH level 0 |
4.5 to 5.5 V |
Engine switch on (IG) Refreshing seat switch LH blower side level 3 |
Below 1 V |
|||
F42-31 (S5-4) - Body ground |
V - Body ground |
Power supply |
Engine switch on (IG) |
4.5 to 5.5 V |
F42-35 (SG-4) - Body ground |
SB - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, the air conditioning amplifier may have a malfunction.
(1) Using an oscilloscope, check waveform 1.
Item |
Content |
---|---|
Terminal No. (Symbol) |
F87-9 (ROUT) - Body ground F87-10 (LOUT) - Body ground |
Tool Setting |
2 V/DIV., 500 μsec/DIV. |
Condition |
Engine switch on (IG) Refreshing seat switch blower side level 3 |
SFR Solenoid Circuit (C0226,C0236,C0246,C0256,C1225-C1228)
DESCRIPTION
The solenoid turns on when signals are received from the skid control ECU and
controls the pressure acting on the wheel cylinders, thus controlling braking force.
DTC Code
DTC Detection Condition
Trouble Area
...
Skid Control ECU Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
Brake Actuator (Skid Control ECU) Communication Stop Mode
Either condition is met:
"Skid Control (ABS/VSC/TRAC)" is not displa ...