CHECK AT ENGINE-ECU TERMINAL


<4G6>




Terminal No.
 Terminal code
 Inspection Item
 Check condition (Engine condition)
 Normal condition
74
 AC/T
 Fin thermo sensor
 Evaporator surface temperature: 25°C (1.5 kΩ)
 1.1 - 1.3 V
88
 AC/S
 A/C switch <Cooler, Manual A/C>
  • Ignition switch: ON
  • Blower switch: Other than OFF

 A/C switch: OFF
 System voltage
A/C switch: ON
 0 - 3 V
104
 AC/R
 A/C compressor relay
  • Engine: Idle operation
  • A/C switch: OFF → ON
    (when the compressor is active)

 Battery voltage → 1 V or less
108
 F/L0
 A/C condenser fan relay <Vehicles with A/C condenser fan>
 A/C condenser fan inactive state
 System voltage
A/C condenser fan rotation state
 1 V or less

<4D5, 4N1>




Terminal No.
 Terminal code
 Check item
 Inspection condition (engine status)
 Normal condition:
7
 AC/S
 A/C switch
 Engine: Idle speed (after warning up)
 A/C switch: OFF
 1 V or less
A/C switch: ON (A/C compressor in operation)
 System voltage
9
 BFAN
 Blower fan switch
 Engine: Idle speed (after warning up)
 Blower fan switch: OFF
 1 V or less
Blower fan switch mode: 3
 System voltage
19
 AC/R
 A/C compressor relay
 Engine: Idle speed (after warning up)
 A/C switch: OFF
 System voltage
A/C switch: ON (A/C compressor in operation)
 1 V or less
21
 F/LO
 Condenser fan relay <Vehicles with A/C condenser fan>
 Engine: Idling after warming up the engine
 A/C switch: OFF
 System voltage
A/C switch: ON
 1 V or less <=> System voltage (Changes repeatedly)
61
 AC/T
 A/C fin thermo sensor
 Ignition switch: ON
 2.1 - 2.7 V