Pinpoint Test C: DTC B1601
Anti-Theft
Pinpoint Test C: DTC B1601
Normal Operation
- DTC B1601 (PATS Received Incorrect Key-Code From Ignition Key Transponder) - sets when there is an unprogrammed PATS key. There is no concern with the PATS key itself, but the key must be programmed into the PATS memory (unless the maximum number of keys are already programmed).
This pinpoint test is intended to diagnose the following:
- PATS key
- IC
PINPOINT TEST C: DTC B1601
NOTE: Large metallic objects, electronic devices on the key ring that can be used to purchase gasoline or similar items, or a second key on the same key ring as the PATS key may cause a vehicle starting concern and record DTCs under certain conditions. If a fault cannot be identified, examine the customer key ring for such objects or devices. If present, inform the customer that they need to keep these objects from touching the PATS key while starting the engine. These objects and devices cannot damage the PATS key, but can cause a momentary concern if they are too close to the key during engine start. If a concern occurs, turn the ignition switch off and restart the engine with all other objects on the key ring held away from the ignition key. Check to make sure the PATS key used by the customer is an approved Ford PATS key. (PATS keys from Ford, Rotunda, Strattec, or Huf are approved Ford PATS keys.)
NOTE: Only 8 PATS keys can be programmed into the IC using the Key Programming Using Diagnostic Equipment procedure unless the unlimited key mode is active. If the N_KEYCODE (number of keys programmed) PID reads more than 2, the concern may be the PATS key being used is an unprogrammed key. Verify this by also viewing the MASTERKEY (verifies if the key is programmed) PID. It must read PRESNT for the key to be valid.
