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Home >> Ford Truck >> 2010 >> Explorer AWD V6-4.0L >> Repair and Diagnosis >> Accessories and Optional Equipment >> Antitheft and Alarm Systems >> Testing and Inspection >> Pinpoint Tests >> Pinpoint Test B: DTC B1600

Pinpoint Test B: DTC B1600




Anti-Theft

Pinpoint Tests

Pinpoint Test B: DTC B1600

Normal Operation

The Passive Anti-Theft System (PATS) transceiver communicates with the PATS key. During each vehicle start sequence, the PATS transceiver reads the PATS key identification code and sends the data to the Instrument Cluster (IC). The IC carries out all of the PATS functions such as receiving the identification code from the PATS key and sending a message to the PCM, which controls the engine enable. The IC initiates the key interrogation sequence when the key is turned to the ON or START position.

- DTC B1600 (PATS Ignition Key Transponder Signal is Not Received) - sets when no PATS key has been read by the IC.

This pinpoint test is intended to diagnose the following:

- PATS encoded ignition 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 ignition key may cause a vehicle starting concern 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 encoded ignition key used by the customer is a Ford approved PATS key (PATS keys from Ford, Rotunda, Strattec, and Huf are approved Ford PATS keys).

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B1 CHECK THE DTCs


- Clear the continuous IC DTCs.
- Ignition OFF.
- Ignition ON.
- Retrieve the IC DTCs.
- Is DTC B1600 retrieved?

Yes
GO to B2.

No
If DTCs other than PATS DTCs are retrieved, REFER to Instrument Panel, Gauges and Warning Indicators.

If no PATS DTCs are retrieved, the system is OK.

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B2 INSTALL A NEW PATS IGNITION KEY


NOTE: Check to make sure the customer and the new encoded PATS ignition keys (contains a transponder) are Ford approved PATS ignition keys. Unapproved PATS keys do not always operate correctly over different temperature ranges (Ford, Rotunda, Strattec, and Huf are the only approved PATS ignition keys).

- Cut a new ignition key.
- Program the new ignition key. Refer to Spare Key Programming - Using Diagnostic Equipment Using Diagnostic Equipment.
- Clear the continuous IC DTCs.
- Ignition OFF.
- Ignition ON.
- Retrieve the IC DTCs.
- Is DTC B1600 present?

Yes
GO to B3.

No
If no PATS DTCs are retrieved, one (or both) of the original PATS keys are damaged.
REPEAT the self-test with the original keys to determine if one (or both) keys are damaged.

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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 was 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 continuous 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
REMOVE the new transceiver and INSTALL the original transceiver. GO to B4.

No
The system is OK.

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B4 CHECK FOR CORRECT IC OPERATION


NOTE: When a new IC is installed, the PATS keys must be programmed into the IC.

NOTE: When a new IC is installed, the parameters must be reset in the IC and the PCM.

- 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. 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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