Test H: The Demand Lighting Is Inoperative

PINPOINT TEST H: THE DEMAND LIGHTING IS INOPERATIVE

Normal Operation
During the demand lighting function, the instrument cluster (IC) provides a ground for the battery saver relay through circuit 1005 (VT/OG). The battery saver relay provides power to circuit 54 (LG/YE). Circuit 54 (LG/YE) provides power to each demand lamp switch and when activated, provides power to the selected demand lamp. The demand lamps are grounded through circuit 57 (BK).

- DTC B1315 (Battery Saver Relay Coil Circuit Short To Battery) - is a continuous and on-demand DTC that sets when the IC detects a short to voltage on the battery saver relay driver output circuit.

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Battery saver relay
- IC

H1-H4:

H5-H7:

H8-H9: