Service Procedure: Prom: Installation
- Place PROM in clear carrier upside down on flat surface with pins facing up. Using a narrow blunt tool, press PROM body down on both sides of retainer bar so top of PROM is flush with top of carrier. Repeat procedure for PROM mounted in green carrier. See Fig 1.
- Position clear PROM carrier squarely over PROM socket in ECM. Firmly press down on top of carrier. While holding carrier down, press body of PROM down with a blunt tool. Alternately pressing down on either end will securely seat PROM. Repeat procedure for PROM mounted in green carrier.
- Install access cover on ECM and ensure it locks in place. Install ECM in vehicle. Start engine, enter diagnostics and check for code "51". If code "51" does not appear, PROM installation is correct. If code "51" is displayed, one or both PROMs are not fully seated, installed backwards, have bent pins or are defective.
- If pins are bent, straighten pins and reinstall PROM. If pins break or crack during straightening process, replace BOTH PROMs. If PROMs are installed backwards, replace BOTH PROMs.