Electronic Spark Control (ESC) (Pickup & Rodeo 3.1L)
To test ESC system, proceed to CHART C-5 under DIAGNOSTIC CHARTS. On Pickup and Rodeo, ESC module is located on right side fenderwell and contains a 5-pin connector.
NOTE:
If a problem develops with ESC, ECM will set Code 43. For additional testing procedures, see appropriate TESTS W/CODES
article in the ENGINE PERFORMANCE Section.