AC/Air Conditioning, page 21

AC–21

AIR CONDITIONING SYSTEM – TROUBLESHOOTING

Trouble Area | Memory*5 | See page

• Room temp. sensor
• Harness or connector between room temp. sensor and A/C amplifier
• A/C amplifier
(8.5 min. or more) | AC–28

• Ambient temp. sensor
• Harness or connector between ambient temp. sensor and A/C amplifier
• A/C amplifier
(8.5 min. or more) | AC–30

• Evaporator temp. sensor
• Harness or connector between evaporator temp. sensor and A/C amplifier
• A/C amplifier
(8.5 min. or more) | AC–32

• Engine coolant temp. sensor
• Harness or connector between coolant temp. sensor and A/C amplifier
• A/C amplifier
(8.5 min. or more) | AC–34

• Solar sensor
• Harness or connector between sensor and A/C amplifier
• A/C amplifier
(8.5 min. or more) | AC–36

• Compressor drive belt  • Compressor lock sensor  • Compressor
• Harness and connector between A/C amplifier and compressor, compressor lock sensor
• A/C amplifier
— | AC–38

• Pressure switch
• Harness or connector between pressure switch and A/C amplifier
• Refrigerant pipe line
• A/C amplifier
— | AC–40

• Air mix damper position sensor  • A/C amplifier
• Harness or connector between air mix damper position sensor and A/C amplifier
(1 min. or more) | AC–42

• Air outlet damper position sensor  • A/C amplifier
• Harness or connector between max cool damper position sensor and A/C amplifi-
(1 min. or more) | AC–48

• Air mix damper control servo motor  • Air mix damper position sensor
• Harness and connector between A/C amplifier and air mix position sensor
• Harness and connector between A/C amplifier and air mix damper control servo motor  • A/C amplifier
(15 secs. or more) | AC–42
AC–44

• Air outlet damper control servo motor  • Air outlet damper position sensor
• Harness and connector between A/C amplifier and air outlet position sensor
• Harness and connector between A/C amplifier and air outlet damper motor
• A/C amplifier
(15 secs. or more) | AC–48
AC–50

HINT:  *4  Compressor lock (A/C light blink) is indicated only for a current malfunction. (See page AC–38)

To confirm the trouble indication, perform the following steps.
(1) With the engine ON, enter the trouble code check mode.
(2) Press the R/F switch to enter actuator check mode, and set the operation to Step No. 3.
(3) Press the AUTO switch to return to diagnostic sensor check mode.
(4) The A/C light starts to blink after approx. 3 secs.

*5  The A/C amplifier memorizes the trouble code of the respective malfunction when it occurs for period of time indicated in the brackets.