Normal Operation

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

When the key is inserted into the ignition lock cylinder, the key-in-ignition switch (part of the ignition switch) closes and routes a voltage signal to the instrument cluster (IC) through circuit 1414 (LG/VT). The voltage signal indicates to the instrument cluster (IC) the key is inserted into the ignition lock cylinder. If the instrument cluster (IC) detects that the ignition switch is in the OFF or ACC position with the key inserted in the ignition lock cylinder and the driver door is ajar, the key-in-ignition warning chime (located in the instrument cluster [IC]) sounds.

DTC B1353 (Ignition Key-In Chime Circuit Open) - is a continuous and on-demand DTC that sets in the instrument cluster (IC) if the instrument cluster (IC) detects a run/start input on circuit 489 (PK/BK) with no key-in-ignition input on circuit 1414 (LG/VT).

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Key-in-ignition switch (part of the ignition switch)
Instrument cluster (IC)