READ FAULTS Mode

This allows technician to read and erase DTCs. Trouble code message counter will appear along with trouble code messages displayed on DRB. For example, DRB will display 1 OF 2 FAULTS. PCM will store up to 8 trouble code messages.

Trouble code messages are numbered in reverse order of setting. Most recent trouble code message to occur will be number one. Vehicles without A/C will always have A/C CLUTCH RELAY CKT (circuit) stored in memory. This message will always be number one if vehicle is not equipped with A/C. If no trouble code messages are stored, DRB will display NO FAULTS DETECTED and start counter will show 0 STARTS SINCE ERS.

A start counter will appear below DRB trouble code message counter display. Start counter counts the number of times vehicle is started since trouble code messages were last set, erased or battery was disconnected. This helps determine if problem is intermittent.

Memory space limits start counter to first 3 trouble code messages. Start counter of zero equals a hard DTC. Start counter of more than zero indicates an intermittent failure. Start counter will count up to 255 starts. If no trouble code messages are stored, DRB will display NO FAULTS DETECTED and start counter will show 0 STARTS SINCE ERS.