Fault Symptoms

+B missing when +15 is on

Fault symptoms
Interior lighting does not come on when the key is removed from the ignition and no doors are opened.

Conditions
+B missing when +15 is on

Diagnostic help
+B can be read with the scan tool.

Check wiring harness.
Jiggle the wiring harness at several points and in different directions to reveal intermittent breaks and short-circuits in the leads.
Observe the multimeter, test lamp or diagnostic instrument during the test.