Intermittent Symptom
- If symptom is intermittent, check for a loose No. 33 ECU/PCM (10-amp) fuse located in underhood fuse/relay box. Check for loose No. 1 BACK UP, LIGHTS, METER LIGHTS, TURN SIGNALS (10-amp) fuse located in underdash fuse/relay box. Check for a loose No. 2 FUEL PUMP (15-amp) fuse located in underdash fuse/relay box.
- Check for an intermittent short in Blue wire between PCM 32-pin connector "A" terminal A18 and gauge assembly 10-pin Blue connector terminal No. 7. Check for an intermittent short in Yellow/Red wire between PCM 31-pin connector "C" terminal C19 and MAP sensor. Check for an intermittent short in Yellow/Blue wire between PCM 31-pin connector "C" terminal C28 and the Throttle Position (TP) sensor, EGR valve lift sensor, and/or the Fuel Tank Pressure (FTP) sensor. See WIRING DIAGRAMS article. Check the PGM-FI relay. See «SYSTEM/COMPONENT TESTS»(ref-16351) article.