X53 - Check Continuity of ACPSW to CCRM
- Key "OFF".
- AC Pressure Switch (ACPSW) disconnected.
- Constant Control Relay Module (CCRM) disconnected.
ACPSW View:
- Measure resistance between the A/C demand to CCRM pin at the ACPSW vehicle harness connector and Pin 21 of the CCRM vehicle harness connector.
- Is resistance less than 5.0 ohms?
Yes -- Reconnect CCRM. Go to Heating and Air Conditioning to check the operation of the ACPSW. After any service, reconnect all other components and re-evaluate symptom.
No -- Service open circuit. Reconnect all components. Re-evaluate symptom.