Pinpoint Test B: DTC B1600
Anti-Theft
Pinpoint Tests
Pinpoint Test B: DTC B1600
Normal Operation
During each vehicle start sequence, when the key is turned to the START or ON position, the Passive Anti-Theft System (PATS) transceiver reads the PATS key identification code and sends the data to the Instrument Cluster (IC).
- DTC B1600 ( PATS Ignition Key Transponder Signal Is Not Received) - is a continuous and on-demand DTC that sets when no PATS key has been read by the IC.
This pinpoint test is intended to diagnose the following:
- PATS key
- PATS transceiver
- IC
PINPOINT TEST B: DTC B1600
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 vehicle starting concerns 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 key 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: This vehicle uses a Huf Integrated Keyhead Transmitter (IKT) key. If replacing an IKT key for any of these vehicles, it is recommended that the original Huf IKT key be replaced with another Huf IKT key. There are minor visual differences both externally and internally between the Huf IKT key and IKT keys used on other Ford, Lincoln, and Mercury vehicles that may be noticed by the customer. These visual differences will not affect the IKT key functionality in any way. Rotunda should supply a Huf IKT key when ordering replacement/new keys for this vehicle. The Owner's Literature may provide additional information concerning these differences. If replacing an IKT key (or adding another key) with a standard PATS key (not an IKT key), any of the brands (Ford, Rotunda, Strattec or Huf) will operate the system.
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B1 RETRIEVE THE IC DTCs
- Ignition ON.
- Clear the IC DTCs.
- Ignition OFF.
- Ignition ON.
- Retrieve the IC DTCs.
- Is DTC B1600 retrieved?
Yes
GO to B2.
No
If DTCs other than PATS IC DTCs are retrieved, REFER to Multifunction Electronic Modules Testing and Inspection.
If no PATS IC DTCs are retrieved, the system is OK.
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B2 CHECK BOTH PATS KEYS
NOTE: Check to make sure the new PATS keys are approved Ford encoded PATS keys. Unapproved PATS keys do not always operate correctly over various temperature ranges (PATS keys from Ford, Rotunda, Strattec or Huf are approved Ford PATS key).
- NOTE: Follow this procedure using both PATS keys (using one at a time).
- 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 Integrated Keyhead Transmitter (IKT) Key Programming Using Diagnostic Equipment.
- If it is necessary to cut a new PATS key, program the new PATS key. Refer to Integrated Keyhead Transmitter (IKT) Key Programming Using Diagnostic Equipment Integrated Keyhead Transmitter (IKT) Key Programming Using Diagnostic Equipment.
- Ignition ON.
- Clear the IC DTCs.
- Ignition OFF.
- Ignition ON.
- Retrieve the IC DTCs.
- Using all existing keys, then the newly programmed key (if necessary), is DTC B1600 present?
Yes
If DTC B1600 was present for all keys, GO to B3.
If DTC B1600 was not present for all keys, one of the original keys may be damaged and should be replaced. CUT a new key to replace the damaged key. REFER to Integrated Keyhead Transmitter (IKT) Key Programming Using Diagnostic Equipment Integrated Keyhead Transmitter (IKT) Key Programming Using Diagnostic Equipment. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.
No
If DTCs other than PATS IC DTCs are retrieved, REFER to Multifunction Electronic Modules Testing and Inspection.
If no PATS IC DTCs are retrieved, the system is OK.
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B3 INSTALL A NEW PATS TRANSCEIVER
NOTE: Replacement of the PATS transceiver does not require the PATS keys to be programmed into the IC again.
NOTE: Do not use the PATS key that may have been programmed in Step B2.
- Ignition OFF.
- Install a new PATS transceiver. Refer to Passive Anti-Theft System (PATS) Transceiver Service and Repair.
- Ignition ON.
- Clear the IC DTCs.
- Ignition OFF.
- Turn the key to the ON position using an existing customer PATS key.
- Retrieve the IC DTCs.
- Is DTC B1600 retrieved?
Yes
GO to B4.
No
The system is OK.
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B4 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 Instrument Cluster (IC). RESET the parameters in both the IC and the PCM. REFER to Passive Anti-Theft System (PATS) Parameter Reset 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 Integrated Keyhead Transmitter (IKT) Key Programming Using Diagnostic Equipment. CYCLE the ignition. 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.
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