Checking the power supply and ground for the climate control module (CCM)
- Ignition off
For information about fuse number and the number on the terminal pins, see the wiring diagram
Check the power supply cable for the climate control module (CCM). Check for an open-circuit. Check for a short-circuit to ground.
Check the fuse for the power supply relay for the climate control module (CCM). The relay is on the central electronic module (CEM). If the fuse is blown, check the circuit after the fuse for a short-circuit to ground before replacing the fuse. Then replace the fuse.
Check the function of the power supply relay by replacing it with a new one.
Check the ground cable between the climate control module (CCM) and the ground terminal. Check for an open-circuit. Also check the ground terminal. Check for contact resistance and oxidation.
Remedy as necessary.
Other information:
- To access or replace the control module:
For -2004 models:
For 2005- models:
- To connect the breakout box, see Connecting the breakout box
- For information about signals and connectors, see Signal description, climate control module (CCM), Connector A
- For information about checking wiring and terminals see Checking wiring and terminals .
- To access or replace the control module:
Was a fault detected?
- YES
Refer to Checking the function of the climate control module (CCM)
- NO
Refer to Signal missing