Toyota 4Runner: System Diagram
SYSTEM DIAGRAM
Communication Table
|
Transmitter |
Receiver |
Signal |
Communication Line |
|---|---|---|---|
|
Air conditioning amplifier assembly |
ECM |
A/C idle up request signal |
CAN |
|
Heater idle up request signal |
|||
|
PTC heater control request signal* |
|||
|
Electricity load at low voltage state signal |
|||
|
Ambient temperature signal |
|||
|
Main body ECU |
Air conditioning amplifier assembly |
Main body request signal |
|
|
Combination meter assembly |
Air conditioning amplifier assembly |
Vehicle speed signal |
|
|
ECM |
Air conditioning amplifier assembly |
Engine coolant temperature signal |
|
|
Engine speed data |
|||
|
Engine type information signal |
|||
|
Heater control assembly |
Air conditioning amplifier assembly |
AUTO operation switch signal |
LIN |
|
OFF operation switch signal |
|||
|
A/C switch signal |
|||
|
Front defroster operation switch signal |
|||
|
Rear defogger operation switch signal |
|||
|
Mode operation switch signal |
|||
|
REC/FRS switch signal |
|||
|
Set temperature switch signal |
|||
|
Blower operation switch signal (up, down) |
- *: w/ PTC Heater
System Description
SYSTEM DESCRIPTION
1. GENERAL
(a) The air conditioning system has the following controls.
Control
Outline
Neural Network Control
This control is ca ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use these procedures to troubleshoot the air conditioning system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO W ...
Other materials about Toyota 4Runner:
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK
BODY ECU)
(a) Remove the main body ECU (multiplex network body ECU) (See page
).
(b) Measure the voltage and resistance according to the value(s) in the ...
Using the audio control function
Changing sound quality modes
Type A
Pressing selects the mode to be
changed in the following order:
“BAS”→“TRE”→“FAD”→“BAL”→“ASL”
Type B and C Press
.
Press
,
,
,
or
(type C only) as corresponds to
the desired mod ...
0.0268