Self-Diagnosis For TAC Module
SELF-DIAGNOSIS PROCEDURE
HOW TO READ SELF-DIAGNOSTIC RESULTS (Malfunction codes)
- Count the number of Throttle Actuator Control (TAC) module LED flashes (ten digits and unit digits). If multiple troubles occur, their corresponding trouble code numbers will be stored in the memory. For indication pattern, start code number 12 will be indicated first. Following start code number 12, trouble code numbers will be indicated in numerical order, one at a time, and will be repeated.
- If there is no trouble, only trouble code 55 will be repeatedly indicated.
HOW TO ERASE SELF-DIAGNOSTIC RESULTS (Malfunction codes)
- With accelerator pedal fully depressed (full-open throttle), turn neutral position switch "OFF", and place shift lever in any position other than "P" or "N".
- After turning ignition switch "ON" (engine off), turn neutral position switch "ON", and place shift lever in "P" or "N". Release accelerator pedal (full-closed throttle).
- Items indicated in the following table can be erased as per conditions without using erasure procedures outlined above. These items are erased under conditions outlined in the table.
- After the erase operation is completed, it is necessary to rerun the self-diagnostic mode to verify that malfunction codes no longer appear. Only the Code No. 55 should be indicated when erase operation is completed and system is functioning normally.
If the system becomes inoperative, the Traction Control System (TCS) function will be suspended. The fail-safe system will then activate, illuminating the SLIP indicator and TCS OFF indicator. The motor throttle valve will act as one similar to a vehicle which is not equipped with a TCS.
CAUTION:
- If the motor throttle control system becomes inoperative, only the TCS function will be suspended. The ABS function will activate properly.
- If the Transmission Control Module (TCM) fail-safe system activates, the self-diagnostic procedure must be performed first on the ABS/TCS control system.
TCM FAIL SAFE
