JA2 - Check For Vehicle Start - Diagnostic Harness Installed

WARNING: NEVER CONNECT THE PCM TO THE EEC BREAKOUT BOX WHEN PERFORMING EI DIAGNOSTICS.

- Key Off.

- Install EI diagnostic harness to breakout box and ICM (Rotunda 007-00059). Do not connect CKP sensor tee or coil tee.

- Use EI (High Data Rate) 6 overlay.

- Connect EI diagnostic harness negative lead to battery, leave positive lead disconnected.

- Set EI diagnostic harness box type switch to "4/6" cylinder position.

- Will vehicle start and run?

YES -- Go to JA22. JA22 - Check CKP Circuit Resistance - ICM Disconnected

NO -- Go to JA3. JA3 - Check PWR GND to ICM - Key Off