JC4 - Check For C1 High at Coil Pack - KOEO

- Key On, Engine Off.

- Measure voltage between (+)J6 (C1C) and (-)J7 (B-) at breakout box.

- Is DC voltage reading greater than 10.0 volts?

YES -- Go to JC5. JC5 - Check For C2 High at Coil Pack - KOEO

NO -- C1 low fault. Go to JC16. JC16 - Check For C1 Short Low - Coil Disconnected - Key Off