Pinpoint Test F: DTC B1602 - Passive Anti-Theft System (Pats) Received Invalid Format Of Key-Code From Pats Key Transponder (Partial Key Read)
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Large metallic objects, electronic debit transponder devices, or a 2nd key on the same key ring as the passive anti-theft system (PATS) key may cause vehicle starting problems and record DTCs under certain conditions. If a fault cannot be identified, examine the customer's key 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 problem if they are too close to the key during engine start.
If a problem occurs, turn the ignition switch OFF and restart the engine with all other objects on the key ring held away from the PATS key.
Check to ensure the PATS key used by the customer is an approved Ford PATS key (PATS keys from Rotunda, Huf or Strattec are approved Ford PATS keys).
- F1 USE THE DTCS FROM THE POWERTRAIN CONTROL MODULE (PCM) SELF-TEST
- Use the recorded PCM continuous and on-demand self-test DTCs.
- Is DTC B1602 retrieved?
Yes : GO to F2.
No : The system is OK. CHECK all customer PATS keys with PCM self-test to verify all other PATS keys are programmed.
- F2 OBTAIN A NEW PATS KEY
- Key in the OFF position for a minimum of 3 seconds.
- Cut a new PATS key.
- Key in ON position.
- Program a new PATS key. Refer to KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT in this article.
- Carry out the PCM self-test.
- Is DTC B1602 retrieved?
Yes : GO to F3.
No : The system is OK.
- F3 INSTALL A NEW PATS TRANSCEIVER
- Key in the OFF position for a minimum of 3 seconds.
- Install a new PATS transceiver. Refer to PASSIVE ANTI-THEFT SYSTEM (PATS) TRANSCEIVER in this article.
- Key in ON position.
- Enter the following diagnostic mode on the diagnostic tool: CLEAR DTCs.
- Are any DTCs retrieved?
Yes : REFER to the PASSIVE ANTI-THEFT SYSTEM (PATS) - DIAGNOSTIC TROUBLE CODES (DTC) INDEX .
No : The system is OK.