JC44 - Check For C4 Short Low - Coil Disconnected - Key Off

- Key Off.

- DVOM on 20K ohm scale.

- Disconnect coil from coil tee, leave EI diagnostic harness connected to vehicle harness coil connector.

- Measure resistance between J7 (B-) and J18 (LC4C) at breakout box.

- Is resistance reading less than 2K ohms?

YES -- GO to JC45. JC45 - Check For C4 Short Low - ICM and Coil Disconnected

NO -- REPLACE left coil pack. C4 open in coil. REMOVE all test equipment. RECONNECT all components. Clear continuous memory. Clearing Diagnostic Trouble Codes

Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes