Operation CHARM: Car repair manuals for everyone.

B11 - Check Ground Circuit Continuity In CCRM



- Key "OFF".

- Constant Control Relay Module (CCRM) disconnected.

- Measure resistance of CCRM ground circuit by placing the Digital Volt/Ohm Meter (DVOM) (+) lead on Pin 9 and DVOM (-) lead on Pin 15 of the CCRM (specific DVOM (+/-) lead placement is due to diode in circuit).

- Is resistance less than 5.0 ohms?

Yes -- Service open ground circuit between CCRM and battery negative post. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

No -- Replace CCRM. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)