Reading and Clearing Diagnostic Trouble Codes

INTRODUCTION AND GENERAL DESCRIPTION
The self-diagnostic system diagnoses sensors, door motors, blower motor, etc. by system line. Refer to applicable sections (items) for details. Shifting from normal control to the self-diagnostic system is accomplished by starting the engine (turning the ignition switch from "OFF" to "ON") and pressing "OFF" switch for at least 5 seconds. The "ON" switch must be pressed within 5 seconds after starting the engine (ignition switch is turned "ON"). This system will be canceled by either pressing (AUTO) switch or turning the ignition switch "OFF". Shifting from one step to another is accomplished by means of pushing (HOT) or (COLD) switch, as required.

Additionally shifting from STEP 5 to AUXILIARY MECHANISM is accomplished by means of pushing (fan) UP switch.


STEP-BY-STEP PROCEDURE

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Step 5:

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AUXILIARY MECHANISM: TEMPERATURE SETTING TRIMMER
The trimmer compensates for differences in range of ±3 °C (±6 °F) between temperature setting (displayed digitally) and temperature felt by driver.
Operating procedures for this trimmer are as follows:
- Begin Self-diagnosis STEP 5 mode.
- Press (fan) UP switch to set system in auxiliary mode.
- Display shows "61" in auxiliary mechanism. It takes approximately 3 seconds.




- Press either (HOT) or (COLD) switch as desired. Temperature will change at a rate of 0.5 °C (1 °F) each time a switch is pressed.

When battery cable is disconnected, trimmer operation is canceled. Temperature set becomes that of initial condition, i.e. 0 °C (0 °F).