Retrieving Trouble Codes: Notes
WARNING: This page is about a different car, the 1990 Toyota Cressida and 1989 Toyota Cressida. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
DO NOT enter self-diagnostic system until all basic engine checks (engine, fuel and spark) have been performed. See BASIC TESTING
article in this section.
NOTE:
For 1989, Cressida has 2 types of diagnostic modes: normal and test. To prevent damage to ECU, only jumper terminals specified.