| Circuit Diagram |

Components 1. SET - switch2. RES + switch3. SCC switch4. CANCEL switch5. CRUISE switch
Removal 1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the air-bag module from the steering wheel. (Refer to Restraint - "Driver Airbag (DAB) Module and Clock Spring") 3.
Removal 1. If the compressor is marginally operable, run the engine at idle speed, and let the air conditioning work for a few minutes, then shut the engine off. 2. Disconnect the negative cable from the battery. 3. Recover the refrigerant with a recovery/charging station.
Inspection 1. Ignition "ON" 2. Using the scan tool. 3. Emit intensive light toward photo sensor using a lamp, and check the output voltage change. 4. The voltage will rise with higher intensive light and reduce with lower intensive light.