Individual Component Inspections

In-Vehicle Sensor
1. Disconnect the in-vehicle sensor connector (B-21).
2. Measure resistance between the in-vehicle sensor side terminal No.B2103 and B21-4.




Solar Sensor
1. Disconnect the solar sensor connector (C-36).
2. Measure the current value on the solar sensor when placed approximately 15cm away from the 60W incandescent lamp.




Ambient Sensor
1. Disconnect the connector (C-15) on the ambient sensor.
2. Measure resistance between the ambient sensor side terminals.




Power Transistor
1. Remove the power transistor connector (B-25) from the evaporator assembly.
2. Check the conduction between the power transistor side terminals.




MAX HI Relay
1. Remove the MAX-HI relay connector (B-26) from the blower assembly.
2. Check the conduction between the MAX-HI relay side terminals.

In-Vehicle Sensor
1. Turn on the ignition switch (the engine is started).
2. Make sure that the in-vehicle sensor suctions cigarette smoke, etc.




3. Dismount the in vehicle sensor from the automatic heater/air conditioner control unit. Connect the positive (+) end and the negative (-) end of the battery to the aspirator motor side terminals No.B21-1 and B21-2, respectively, then check if the motor runs normally.




Heater (X-6), Thermostat (X-5), and Compressor (X-10) Relay
1. Disconnect relays and check for continuity and resistance between terminals. For handling of these relays, refer to Heater Relay.





Triple Pressure Switch (V6, A/T)
1. Disconnect the connector and check for continuity between pressure switch side connector terminals (1) and (2).
2. Reconnect the connector to activate the A/C switch, and check to see if there si continuity between the chassis side connector terminal (3) and (4) and the fan operation.