
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.