B1525

B1525
+15 missing when +54 is ON






Fault symptoms
If a fuse is missing, then SID and MIU are "black" and Trionic is shown as being a fused unit. Communication for diagnostics is still possible, however, even though a fuse is missing.

Conditions
+15 missing when +54 is ON

Diagnostic help
+15 can be read with 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.