Reading Diagnostic Trouble Codes
On-board Diagnostic System - Diagnostic Test Mode III
Self-diagnostic Results
Procedure
CAUTION:
During display of Diagnostic trouble code No. in on-board diagnostic system mode (Diagnostic Test Mode III). If another diagnostic test mode is to be performed, be sure to note the malfunction diagnostic trouble code No. before turning diagnostic test mode selector on ECM fully clockwise. When selecting an alternative, select the diagnosis mode after turning switch "OFF". Otherwise on-board diagnostic system information in the ECM memory will be lost.