EG–480 ENGINE – 2JZ–GE ENGINE TROUBLESHOOTING 2 Check voltage between terminal ACIS of engine control module connector and body ground. ON SST ECM B 39 ACIS BE6653 FI6896 P (1) Connect SST (check harness "A"). (See page EG–404) SST 09990–01000 (2) Turn ignition switch ON. C Measure voltage between terminal ACIS of en- gine control module connector and body ground. OK Voltage: 9 — 14 V NG OK Check for vacuum tank. (See page EG–230) 3 Check for open and short in harness and connector between EFI main relay and engine control module (See page IN–30). OK NG Repair or replace harness or connector. Check and replace engine control module.