Air Conditioning System (For Manual Air Conditioning System) Idle Up Switch Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
READ VALUE USING INTELLIGENT TESTER (IDLE UP SWITCH)
INSPECT IDLE UP SWITCH
CHECK HARNESS AND CONNECTOR (IDLE UP SWITCH - AIR CONDITIONING AMPLIFIER AND BODY GROUND)
AIR CONDITIONING SYSTEM (for Manual Air Conditioning System) - Idle Up Switch Circuit |
DESCRIPTION
When the idle up switch is pushed, the air conditioning amplifier assembly outputs the engine idle up signal. If engine idle up does not occur when the idle up switch is pushed, there may be a problem in the circuit shown below.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.READ VALUE USING INTELLIGENT TESTER (IDLE UP SWITCH) |
Use the Data List to check if the idle up switch is functioning properly (LandCruiser RM000002LIV041X.html).
Air ConditionerTester Display
| Measurement Item/Range
| Normal Condition
| Diagnostic Note
|
IDLE UP/PWR HEAT Switch
| Idle up switch / ON or OFF
| ON: Idle up switch on
OFF: Idle up switch off
| -
|
- OK:
- The display is as specified in the normal condition column.
Remove the idle up switch (LandCruiser RM000003SAI02TX.html).
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
|
6 (SW) - 3 (E)
| Idle up switch on
| Below 1 Ω
|
6 (SW) - 3 (E)
| Idle up switch off
| 10 kΩ or higher
|
| 3.CHECK HARNESS AND CONNECTOR (IDLE UP SWITCH - AIR CONDITIONING AMPLIFIER AND BODY GROUND) |
Disconnect the G20 switch connector.
Disconnect the G25 amplifier connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
G20-6 (SW) - G25-36 (SWVC)
| Always
| Below 1 Ω
|
G20-3 (E) - Body ground
| Always
| Below 1 Ω
|
G25-36 (SWVC) - Body ground
| Always
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
