Step 4 - Readout of Stored Trouble Codes

Self-Diagnosis Step 4 - Readout Of Trouble Codes Stored In Memory:

Self-Diagnosis Step 4 - Con't:

PURPOSE

The stored codes section of self-diagnosis can help a technician fix a problem. The system can store up to seven trouble codes (one code for each sensor in the system).


OPERATION

Each time the HI switch is pressed, the code number advances by one number. After it reaches "6", it will return to "0". Each time the LO switch is pressed, the code number reduces by one. After it reaches "0", it will return to "6".

If a sensor becomes inoperative, the code for that sensor and the number of engine starts/stops occuring since the last time the problem was detected will be displayed in the AMB section. Also displayed will be a vertical bar which represents an open circuit or a horizontal bar which represents a short circuit.

ATC System Trouble Code Explanation:

TROUBLE CODE TABLE