DTC Troubleshooting: P1031 (183)
  1. Check for continuity between ECM connector No. 1 terminal No. 37 and body ground.
Is there continuity?
YES -
Go to Step 15 .
NO -
Repair open in the wire between the under-hood fuse/relay box and ECM connector No. 1 terminal No. 37, then go to Step 18 .