Pinpoint Test C: DTC B1601

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

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, and Huf are approved Ford PATS keys).

C1 RETRIEVE THE DTCs
- If only one key is available, cut a new key and program the keys. Refer to INTEGRATED KEYHEAD TRANSMITTER (IKT) KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT .
- If both keys are available, program the keys. Refer to INTEGRATED KEYHEAD TRANSMITTER (IKT) KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT .
- Ignition OFF.
- Connect the scan tool.
- Ignition ON.
- Clear the IC DTCs.
- Ignition OFF.
- Ignition ON.
- Retrieve the IC DTCs.
- Is DTC B1601 retrieved for either of the PATS keys?
- Yes: If DTC B1601 is retrieved for one PATS key, REPLACE that key and PROGRAM all the keys. REFER to INTEGRATED KEYHEAD TRANSMITTER (IKT) KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT . CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. If DTC B1601 is retrieved for both PATS keys, GO to C2 .
- No: The system is OK. CHECK all the customer PATS keys by attempting to start the vehicle with each key to verify all other PATS keys are programmed.
C2 CHECK FOR CORRECT IC OPERATION
- Disconnect the IC connector.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect the IC connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes: INSTALL a new IC . REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . RESET the parameters in both the IC and the PCM. REFER to PASSIVE ANTI-THEFT SYSTEM (PATS) PARAMETER RESET . PROGRAM the PATS keys into the new IC . REFER to INTEGRATED KEYHEAD TRANSMITTER (IKT) KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT . REPEAT the self-test.
- No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test.