Air Conditioning System (For Automatic Air Conditioning System) Cooling Box Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK HARNESS AND CONNECTOR (COOLING BOX - BATTERY AND BODY GROUND)
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - COOLING BOX)
INSPECT COOLER CONTROL SWITCH SUB-ASSEMBLY
INSPECT NO. 1 COOLER BLOWER MOTOR SUB-ASSEMBLY
INSPECT NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY
AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) - Cooling Box Circuit |
DESCRIPTION
When the cooler control switch sub-assembly is pushed, the No. 1 cooler blower motor sub-assembly and cooler magnet valve assembly controlled by the air conditioning amplifier assembly and air conditioning amplifier assembly (for the cooling box) operate. If the cooling box assembly does not operate when the cooler control switch sub-assembly is pushed, there may be a problem in the circuit shown below.
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
| 1.CHECK HARNESS AND CONNECTOR (COOLING BOX - BATTERY AND BODY GROUND) |
Disconnect the T6 cooling box connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Switch Condition
| Specified Condition
|
T6-3 (ILL+) - Body ground
| Headlight dimmer switch off
| Below 1 V
|
T6-3 (ILL+) - Body ground
| Headlight dimmer switch on
| 11 to 14 V
|
T6-2 (B) - Body ground
| Ignition switch off
| Below 1 V
|
T6-2 (B) - Body ground
| Ignition switch ON
| 11 to 14 V
|
T6-8 (+B) - Body ground
| Always
| 11 to 14 V
|
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
T6-9 (L) - Body ground
| Always
| Below 1 Ω
|
Text in Illustration*a
| Front view of wire harness connector
(to Cooling Box Assembly)
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 2.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - COOLING BOX) |
Disconnect the G25 and G24 amplifier connectors.
Disconnect the T6 cooling box connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
G25-15 (COOL) - T6-4 (COL1)
| Always
| Below 1 Ω
|
G24-12 (SWCB) - T6-5 (ACT)
| Always
| Below 1 Ω
|
G25-15 (COOL) - Body ground
| Always
| 10 kΩ or higher
|
G24-12 (SWCB) - Body ground
| Always
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 3.INSPECT COOLER CONTROL SWITCH SUB-ASSEMBLY |
Remove the cooler control switch sub-assembly (LandCruiser RM0000046MN00FX.html).
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
|
1 - 2
| Cooler control switch sub-assembly on
| Below 1 Ω
|
1 - 2
| Cooler control switch sub-assembly off
| 10 kΩ or higher
|
Apply battery voltage to the cooler control switch sub-assembly connector and check that the cooler control switch sub-assembly illuminates.
- OK:
Measurement Condition
| Specified Condition
|
Battery positive (+) → Terminal 3
Battery negative (-) → Terminal 4
| LED illuminates
|
Battery positive (+) → Terminal 5
Battery negative (-) → Terminal 6
| LED illuminates
|
| 4.INSPECT NO. 1 COOLER BLOWER MOTOR SUB-ASSEMBLY |
Remove the No. 1 cooler blower motor sub-assembly (LandCruiser RM0000046MN00FX.html).
Apply battery voltage to the No. 1 cooler blower motor sub-assembly and check that the No. 1 cooler blower motor sub-assembly operates smoothly.
- OK:
Measurement Condition
| Specified Condition
|
Battery positive (+) → Terminal 1
Battery negative (-) → Terminal 2
| No. 1 cooler blower motor sub-assembly operates smoothly
|
| 5.INSPECT NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY |
Remove the No. 1 cooler wiring harness sub-assembly (LandCruiser RM0000046MN00FX.html).
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
A-3 (ILL+) - B-5
| Always
| Below 1 Ω
|
A-2 (B) - E-2 (IG)
| Always
| Below 1 Ω
|
A-8 (+B) - E-1 (+B)
| Always
| Below 1 Ω
|
A-4 (COL1) - E-8 (CBT)
| Always
| Below 1 Ω
|
A-5 (ACT) - E-6 (CBI)
| Always
| Below 1 Ω
|
A-9 (L) - E-4 (GND)
| Always
| Below 1 Ω
|
A-9 (L) - B-6
| Always
| Below 1 Ω
|
A-2 (B) - B-3
| Always
| Below 1 Ω
|
B-4 - E-7 (LED)
| Always
| Below 1 Ω
|
B-2 - E-10 (SG)
| Always
| Below 1 Ω
|
B-1 - E-5 (SW)
| Always
| Below 1 Ω
|
A-2 (B) - C-1
| Always
| Below 1 Ω
|
C-2 - D-2
| Always
| Below 1 Ω
|
A-2 (B) - D-1
| Always
| Below 1 Ω
|
D-2 - E-9 (BLW)
| Always
| Below 1 Ω
|
Text in Illustration*a
| Front view of wire harness connector
(to Vehicle Harness)
|
*b
| Front view of wire harness connector
(to Cooler Control Switch Sub-assembly)
|
*c
| Front view of wire harness connector
(to Cooler Magnet Valve Assembly)
|
*d
| Front view of wire harness connector
(to No. 1 Cooler Blower Motor Sub-assembly)
|
*e
| Front view of wire harness connector
(to Air Conditioning Amplifier Assembly [for Cooling Box])
|
