Normal Operation
WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. 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 warning switch (part of the ignition lock cylinder) grounds circuit 158 (BK/PK). The ground input signals the instrument cluster (IC) the key is inserted. 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 sounds.
- DTC B1352 - is a continuous and on-demand DTC that sets if the instrument cluster (IC) detects that the vehicle is in the RUN or START position without a ground applied to the key-in-ignition input, circuit 158 (BK/PK).
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Key-in-ignition warning switch (part of the ignition lock cylinder)
- Instrument cluster (IC)