1. Check the condition of circuit breakers #6, #7, and #19. If any circuit breaker is open, locate and repair cause of overload. Replace the circuit breaker if necessary.

2. Check that G105 is clean and tight.

3. Check that the LH door jamb switch operates freely.

4. Check that the tail lamps are working properly. Refer to Cell 110 (Exterior Lighting) for diagnostics of the taillamps circuit.

5. 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 the 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).

6. Check for the proper installation of aftermarket electronic equipment which may affect the integrity of other systems. Refer to Checking Aftermarket Accessories .