Troubleshooting Hints

1. CHECK condition of CTSY Fuse 3. If fuse is open, LOCATE and REPAIR cause of overload and REPLACE fuse.
2. CHECK that Ground G201 is clean and tight. For Upfitter Provisions vehicles, CHECK also that Ground G200 is clean and tight.
^ CHECK for a broken (or partially broken) wire inside the insulation which could cause system malfunction but prove GOOD in a Continuity/Voltage check with a system disconnected. These Circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a Voltage drop with the system operational (under load).
^ CHECK for proper installation of aftermarket electronic equipment which may affect the integrity of other systems (Refer Troubleshooting Procedures). Diagnostic Aids