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6-2
SUGGESTIONS ON DIAGNOSIS
IMPORTANT:
1. Check harness connectors for good con-
tact.
2. Before replacing any component verify,
whenever possible, that the component
has proper continuity or resistance values.
There must be proper power to operate the
component.
Display Shows Error Codes
• If error codes “C”, “d” or “CF” show in the
display, refer to the “User Interface Failure
Feedback” and “Component Testing” charts
and check out the appropriate compo-
nent(s).
Display Is Normal
• Disconnect power for 10 seconds and re-
connect power. If error code is displayed
after 3 minutes, refer to the “User Interface
Failure Feedback” and “Component Test-
ing” charts, and check out the appropriate
component(s).
• If no error codes display and a malfunction
is occurring, check or troubleshoot the fol
-
lowing appropriate areas. Also refer to the
“Component Testing” and “Troubleshooting”
charts.
- Electrical system
- Restricted or lack of proper airflow
- Defrost system
- Unusual noises
- Cooling system
Display Is Blank
• Refer to “User Interface Failure Feedback”
and “Troubleshooting” charts.