[55A] HEATER, AIR CONDITIONER AND VENTILATION - - TROUBLESHOOTING - CHECK AT ECU TERMINAL | PRINT PAGE / INDEX / PRIOR / NEXT

CHECK AT ECU TERMINAL
Terminal No. | Check item | Checking requirement | Normal condition
--- | --- | --- | ---
1 | Rear window defogger switch | Rear window defogger switch: ON | 0 V
Rear window defogger switch: OFF | System voltage
2 | Inside/outside air changeover damper motor (outside air) | When the damper is moved to the inside air recirculation position | 0 V
When the damper is moved to the outside air inside air intake position | System voltage
3 | Inside/outside air changeover damper motor (inside air) | When the damper is moved to the inside air recirculation position | System voltage
When the damper is moved to the outside air inside air intake position | 0 V
4 | Output to the engine-A/T-ECU (A/C1) | A/C stopped | 0 V
A/C switch: ON Blower switch: ON | System voltage
5 | Output to the engine-A/T-ECU (A/C2) | When the A/C is under low load | System voltage
When the A/C is under high load | 0 V
6 | Power supply to the A/C illumination | Lighting switch: ON | System voltage
7 | - | - | -
8 | Blower switch (lo) | blower switch: lo | System voltage
9 | - | - | -
10 | Power supply to the ignition switch (IG2) | Ignition switch: ON | System voltage
11 | Earth to the A/C illumination | Always | 0 V
12 | Earth | Always | 0 V
13 | Air thermo sensor (outlet side) | Sensor probe temperature 25°C (1.5k ohm) | 2.2 V
14 | Air thermo sensor (inlet side) | Sensor probe temperature 25°C (1.5k ohm) | 2.2 V
15 | - | - | -
16 | Earth to the air thermo sensor | Always | 0 V

[55A] HEATER, AIR CONDITIONER AND VENTILATION - - TROUBLESHOOTING - CHECK AT ECU TERMINAL | PRINT PAGE / INDEX / PRIOR / NEXT

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