DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT FUSE (PANEL, A/C IG, ECU-B1)
CHECK HARNESS AND CONNECTOR (NO. 1 COOLER WIRING HARNESS - BATTERY)
CHECK HARNESS AND CONNECTOR (NO. 1 COOLER WIRING HARNESS - BODY GROUND)
CHECK NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY (OPERATION)
INSPECT COOLER CONTROL SWITCH SUB-ASSEMBLY
AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) - Cooling Box Control Switch Circuit
DESCRIPTION
The cooler control switch is the activation switch for the cooling box. If the cooling box does not activate when the cooler control switch is pushed, there may be a malfunction in the circuit shown below.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.INSPECT FUSE (PANEL, A/C IG, ECU-B1) |
Remove the PANEL and A/C IG fuses from the cowl side junction block LH.
Remove the ECU-B1 fuse from the engine room relay block.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| PANEL fuse | Always | Below 1 Ω |
| ECU-B1 fuse | Always | Below 1 Ω |
| A/C IG fuse | Always | Below 1 Ω |
| 2.CHECK HARNESS AND CONNECTOR (NO. 1 COOLER WIRING HARNESS - BATTERY) |
Disconnect the No. 1 cooler wiring harness sub-assembly connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Condition | Specified Condition |
| 4 (+B) - Body ground | Always | 11 to 14 V |
| 1 (B) - Body ground | Engine switch off | Below 1 V |
| Engine switch on (IG) | 11 to 14 V |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 3.CHECK HARNESS AND CONNECTOR (NO. 1 COOLER WIRING HARNESS - BODY GROUND) |
Disconnect the No. 1 cooler wiring harness sub-assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 6 (L) - Body ground | Always | Below 1 Ω |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 4.CHECK NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY (OPERATION) |
Replace the No. 1 cooler wiring harness sub-assembly with a normal one and check that the condition returns to normal.
- OK:
- Same problem does not occur.
| OK | |
| |
| REPLACE NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY |
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| 5.INSPECT COOLER CONTROL SWITCH SUB-ASSEMBLY |
Remove the cooler control switch sub-assembly ().
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Switch Condition | Specified Condition |
| 1 - 2 | On | Below 1 Ω |
| 1 - 2 | Off | 10 kΩ or higher |
Apply battery voltage to the cooler control switch connector and check that the cooler control switch 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 |
| | REPLACE COOLER CONTROL SWITCH SUB-ASSEMBLY ()
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| OK | |
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| REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (for Cool Box) ()
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