DTC Check / Clear

If compressor lock occurs during A/C operation, the A/C switch indicator on the A/C control assembly starts blinking.

When this occurs, check for compressor lock (DTC 22) using diagnostic trouble code check, and then proceed to inspect the circuit or the component.

Compressor circuit (see COMPRESSOR CIRCUIT  ).

Fig 1: Diagnostic Trouble Code - Blinking Pattern

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Turn the ignition switch ON while pressing the A/C control AUTO switch and R/F switch simultaneously.
   Fig 2: Identifying AUTO Switch And R/F Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check that all the indicators light up and go off 4 times in succession at 1 second intervals.

   HINT:

   • After the indicator check ends, the diagnostic trouble code check begins automatically.
   • Press the OFF switch (when desiring) to cancel the check mode.
     Fig 3: Identifying Blinking Pattern Of A/C Switch Indicator

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Perform an indicator check. After the indicator check is completed, the system enters the DTC check mode automatically.
2. Read the DTC displayed on the panel. Refer to the list of DTCs on page (DIAGNOSTIC TROUBLE CODE CHART  ) when reading the DTCs.

   If the slower display is desired, press the DEF switch and change it to step operation. Every time the DEF switch is pressed, the display changes by 1 step.

1. Pull out the ACC fuse in the cowl side junction block LH for 10 seconds or longer to clear the DTCs memory.
2. After reinserting the fuse, check that the normal code is output.