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AIR CONDITIONING AMPLIFIER - INTELLIGENT SWING REGISTER RESISTANCE
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
Tester connectionConditionSpecified condition
A12-1 (DS1) - I18-3AlwaysBelow 1 ohms
A12-1 (DS1) - Body groundAlways10 kohms or higher
A12-2 (DS2) - I18-4AlwaysBelow 1 ohms
A12-2 (DS2) - Body groundAlways10 kohms or higher
A12-8 (DS3) - I18-5AlwaysBelow 1 ohms
A12-8 (DS3) - Body groundAlways10 kohms or higher
A12-9 (DS4) - I18-10AlwaysBelow 1 ohms
A12-9 (DS4) - Body groundAlways10 kohms or higher
A12-24 (PS+B) - I18-9AlwaysBelow 1 ohms
A12-24 (PS+B) - Body groundAlways10 kohms or higher
A12-3 (PS1) - I18-2AlwaysBelow 1 ohms
A12-3 (PS1) - Body groundAlways10 kohms or higher
A12-4 (PS2) - I18-1AlwaysBelow 1 ohms
A12-4 (PS2) - Body groundAlways10 kohms or higher
A12-5 (PS3) - I18-6AlwaysBelow 1 ohms
A12-5 (PS3) - Body groundAlways10 kohms or higher
A12-6 (PS4) - I18-7AlwaysBelow 1 ohms
A12-6 (PS4) - Body groundAlways10 kohms or higher
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Fig. 197: Checking Harness And Connector (Air Conditioning Amplifier - Intelligent Swing
Register)
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Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
OK: REPLACE AIR CONDITIONING AMPLIFIER (SEE REPLACEMENT
)
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SYSTEM REFERENCE
Fig. 1: Identifying DLC3 Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
System NameSee Procedure
Front Power Seat Control SystemINITIALIZATION
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If the vehicle is raised with its engine running, connect terminals OPB and CG of the DLC3 to stop
the vehicle height control operation of the suspension control ECU.
Do not operate the steering wheel if there is no air in the pneumatic cylinder.
HINT:
The pneumatic cylinder could be damaged if twisted without air in the cylinder.
In the case of lifting down the vehicle without air in the cylinder, make sure all the pipes are securely
connected.
HINT:
The pneumatic cylinder could be damaged if any pipe is disconnected while lifting down the vehicle.
Do not apply battery voltage to the compressor motor for more than 60 seconds to prevent damage to the
motor.
HINT:
When it is necessary to perform the operation by charging the battery for more than 60 seconds, for example
height recovery without air in the cylinder, proceed to the operation as follows: after 60 seconds have passed,
turn the ignition switch off once, and then turn the ignition switch to the ON position again for commencement
of operation.
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Fig. 2: Identifying Air Suspension System Components Location
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
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Fig. 3: Air Suspension System Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
1.AIR SUSPENSION SYSTEM DESCRIPTION
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a. The suspension control ECU operates the compressor & motor with the dryer and uses the solenoid
valves to control the vehicle height by analyzing the information based on the switches, sensors and
input signals.
b. Through the 4 height control sensors, the suspension control ECU detects the changes in the vehicle
height that results from the number of occupants or the amount of the load. Then, the suspension
control ECU controls the height control solenoid valves and the compressor & motor with the dryer
in order to automatically adjust the vehicle height to a constant (normal) level.
c. Furthermore, two vehicle heights can be selected by operating the height control switch: HI and
Normal.
d. In cases such as when the vehicle is jacked up, the auto leveling function is prohibited by turning
the ignition switch off.
If the vehicle is raised with its engine running, connect terminals OPB and CG of the DLC3 so the
vehicle height control is not carried out.
e. The absorber control switch selects the shock absorber damping force (normal or sport).
f. w/ Pre-collision safety system:
The suspension control ECU changes the stiffness of the suspension to the hardest setting by
receiving signals (collision unavoidable) from the cruise control ECU.
Function of Components