Component Tests and General Diagnostics
1. CHECK that Grounds G105, G200, and G400 are clean and tight.2. CHECK the GAGE Fuse by observing the Instrument Cluster Gages.
3. CHECK CIG LTR Fuse by operating the CIGAR LIGHTER.
4. CHECK condition of PWR ACCY Circuit Breaker for an open condition. If breaker is open, LOCATE and REPAIR source of overload.
5. Always check Terminal contact before replacing any Component.
^ CHECK for a broken (or partially broken) wire inside of the insulation which could cause system failure 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 Fuse 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 to "Troubleshooting Procedures"). Diagnostic Aids
6. If a second Transmitter is available, try it. If it works, change the Batteries in the first Transmitter and try again. If it still doesn't work, it is defective.
7. CHECK Portable Transmitter Battery Terminals. They should be clean and make good contacts with the Battery.
8. If in doubt as to the condition of the Transmitter Batteries, REPLACE them with new ones. CHECK Battery Voltage with a DMM may give results. CHECK for a broken (or partially broken) wire inside of the insulation which could cause system failure but prove "GOOD" in Continuity/Voltage check (Refer to "Troubleshooting Procedure").