Self-Diagnosis Functions

SELF-DIAGNOSIS FUNCTIONS

1. Memorization of self-diagnosis code
The self-diagnosis code indicated will be memorized in EEPROM with in the ECM. Accordingly even if the starter switch turns off or the ECM is removed from the vehicle, the memorized self-diagnosis code will not be eliminated
- Unless an elimination procedure is taken, the self-diagnosis code will remain in memory. (The memory will be eliminated only by a memory clear switch.)

2. Elimination of self-diagnosis code
The self-diagnosis code memorized in the EEPROM with in the ECM can be eliminated only by Scan Tool or the operation of the memory clear switch
The elimination method memory clear switch will be described below:

1. Turn OFF ignition switch.
2. Use 4.7 kohms resistance and make short circuit on memory clear switch.
3. Turn ON ignition switch. The indication lamp turn on (lighting) continuously after three seconds flashing the indication lamp.
4. Turn OFF ignition switch.
5. Remove shortage resistance from memory clear switch

Location of the memory clear switch







How to read flashing of the indicator lamp:
The two-digit self-diagnosis code flashes starting from ten's figure to indicate the self-diagnosis code. Please read the self-diagnosis code from the flashing. If the plural self-diagnosis codes are indicated, the same self-diagnosis code is flashed repeatedly in steps of three times.
Please read it correctly.
- DTC outputting is done in decreasingly order of DTC number.
- Indication is changed over on completion of output DTC indication.
- DTC indicator is stopped with diagnostic switch being off.
- When there is no DTC output, "1" is outputted in normal DTC code.
- After indicating 3 times pear 1 DTC, shift is conducted to the next DTC. (After making a round, the indications are repeated again.)
- In case of the same diagnostic code, it is used 1 DTC (3 times indication.)