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Pinpoint Test B: DTC B1600




Anti-Theft

Pinpoint Tests

Pinpoint Test B: DTC B1600

Normal Operation

- DTC B1600 (Passive Anti-Theft System (PATS) Ignition Key Transponder Signal Is Not Received) - sets when no PATS key has been read by the Instrument Cluster (IC).

This pinpoint test is intended to diagnose the following:

- PATS transceiver
- PATS ignition key
- 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 ignition key can cause vehicle starting issues and record DTCs under certain conditions. If a fault cannot be identified, examine the customer's key ring for such objects or devices. If present, inform the customer that they need to keep these objects from touching the PATS ignition key while starting the engine. These objects and devices cannot damage the PATS ignition 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 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 ignition key used by the customer is a Ford approved PATS key (PATS keys from Ford, Rotunda, Strattec, Huf are approved Ford PATS keys).

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B1 RETRIEVE THE DTCs


- Ignition OFF.
- Connect the scan tool.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Clear the IC DTCs.
- Ignition OFF.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Retrieve the IC DTCs.
- Is DTC B1600 retrieved?

Yes
GO to B2.

No
If DTCs other than PATS DTCs are retrieved, REFER to Body Control Systems.

If other PATS DTCs are retrieved, REFER to DTC Charts. Anti-Theft - Passive Anti-Theft System (PATS)

If no DTCs are retrieved, the system is OK.

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B2 CHECK BOTH PATS KEYS


NOTE: 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, Huf are approved Ford PATS keys).

- Obtain both PATS keys from the customer and follow the procedure using one PATS key, then the other. If the customer only has one PATS key, it is necessary to cut a new PATS key.
- If it is necessary to cut a new PATS key, program the new PATS key. Refer to Key Programming Using Diagnostic Equipment Using Diagnostic Equipment.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Clear the IC DTCs.
- Ignition OFF.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Retrieve the IC DTCs.
- Using all existing keys, then the newly programmed key (if present), is DTC B1600 present?

Yes
If DTC B1600 was present for both existing keys and the new key, GO to B3.

If DTC B1600 was not present for all keys, the key may be damaged and should be replaced. CUT a new key to replace the damaged key (if necessary). REFER to Key Programming Using Diagnostic Equipment 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 DTCs are retrieved, REFER to Body Control Systems.

If other PATS DTCs are retrieved, REFER to DTC Charts. Anti-Theft - Passive Anti-Theft System (PATS)

If no 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.
- Enter the following diagnostic mode on the scan tool: Clear the IC DTCs.
- Ignition OFF.
- Turn the key to the ON position using an existing customer PATS key.
- Enter the following diagnostic mode on the scan tool: 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 Instrument Panel, Gauges and Warning Indicators. 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 Key Programming Using Diagnostic Equipment 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.

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