JC35 - Check For C4 High at Coil Pack - KOEO

- Key On, Engine Off.

- Measure voltage between (+)J18 (LC4C) and (-)J7 (B-) at the breakout box.

- Is DC voltage reading greater than 10.0 volts?

YES -- GO to JC36. JC36 - Check For C3 High at ICM - KOEO

NO -- C4 low fault. GO to JC44. JC44 - Check For C4 Short Low - Coil Disconnected - Key Off