Normal Mode
- Before retrieving trouble code(s), verify MIL on instrument panel illuminates with ignition on and engine off. The MIL should go off when engine is started.
- If MIL remains on, self-diagnostic system has detected a malfunction or abnormality. Ensure battery voltage is greater than 11 volts and charging system is okay. Warm engine to normal operating temperature.
- Apply parking brake. Shift the transmission/transaxle into Neutral (M/T) or Park (A/T). Turn A/C and all accessories off. Ensure throttle is in idle position.
- Turn ignition on with engine off. Install a jumper wire between terminals TE1 and E1 in Data Link Connector (DLC). See Figure for DLC1 terminal illustration.
NOTE:
DLC No. 1 is used. See Figure for DLC location.
- Count number of flashes from MIL on instrument panel. If system is operating properly (with no trouble codes), MIL will flash continuously and evenly. See Fig 1.
- If MIL will not flash, check TE1 and E1 wiring circuit. See wiring diagram in the WIRING DIAGRAMS
article.
- If trouble code exists, digits of trouble code will be flashed at approximately 1/2-second intervals. A 1 1/2-second pause separates first and second digits of code. See Fig 1.
- If more than one trouble code is stored, a 2 1/2-second pause will occur before next trouble code is flashed. Once all trouble codes are displayed, a 4 1/2-second pause will occur, then trouble code(s) will be repeated.
- Trouble codes are displayed in order of smallest to largest number. After trouble codes are retrieved, remove jumper wire to exit Normal Mode.
- To repair failure causing trouble code, refer to DIAGNOSTIC TESTING . Once repairs for trouble code completed, trouble code must be cleared from ECM memory. See CLEARING TROUBLE CODES .
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002