Pinpoint Test I: DTC U0100, U0101, U2511
Anti-Theft
Pinpoint Tests
Pinpoint Test I: DTC U0100, U0101, U2511
Refer to Wiring Diagram Set 14 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Module Communications Network for schematic and connector information. Diagrams By Number
Normal Operation
The Passive Anti-Theft System (PATS) uses a visual anti-theft indicator located in the Instrument Cluster (IC). This anti-theft indicator proves out for 3 seconds when the key is turned to the ON or START position under normal operation. Retrieve DTCs from the IC and the Transmission Control Module (TCM) to determine if there are any PATS-related DTCs that can indicate the cause of the no-start.
Once the PATS key read matches with one of the key codes programmed into the IC, the IC sends its ID over the High Speed Controller Area Network (HS-CAN) to the TCM. The TCM sends a message back, indicating it has received the IC message (ID) and also sends its ID back to the IC. When the IC receives this data transfer, it requests the TCM to start the vehicle by sending a message over the HS-CAN to the TCM. This "handshake" is necessary before the vehicle starts.
If there is a PATS concern, the indicator either flashes rapidly or glows steadily (for more than 3 seconds) when the key is turned to the ON or START position. PATS also flashes the anti-theft indicator every 2 seconds at key off to act as a visual theft deterrent. The anti-theft indicator operation is controlled by the IC.
If DTC U2510 is present, refer to DTC Charts. Diagnostic Trouble Code Tests and Associated Procedures
- DTC U0100 (Lost Communication With ECM/PCM) - sets in continuous memory only when the IC loses communication with the PCM. The fault may not be present at the time of testing and only occurs during the PATS ID code reads. This DTC can be caused by an HS-CAN circuit concern or by the IC or the PCM.
- DTC U0101 (Lost Communication With TCM) - sets in continuous memory only when the IC loses communication with the TCM. The fault may not be present at the time of testing and only occurs during the PATS ID code reads. This DTC can be caused by an HS-CAN circuit concern or by the IC or the TCM.
- DTC U2511 (CAN - Data Mis-Match [Receive Data Does Not Match Expected]) - sets in continuous memory only when the IC does not receive the expected response from the TCM over the HS-CAN and the fault may not be present at the time of testing. The data sent by the TCM does not match the data expected by the IC and this DTC is set. This DTC can be caused by the HS-CAN circuits between the IC and the TCM or by either module. This DTC can also be set if the battery voltage is low.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Low battery state of charge
- IC
- TCM
PINPOINT TEST I: DTC U0100, U0101, U2511
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I1 CHECK THE BATTERY STATE OF CHARGE
- Ignition OFF.
- Check the battery state of charge with the battery condition test. Refer to Battery.
- Does the battery pass the battery condition test?
Yes
GO to I2.
No
REFER to Charging System to diagnose the low battery voltage condition.
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I2 CHECK FOR MODULE COMMUNICATION ON THE HS-CAN
- Connect the scan tool.
- Ignition ON.
- Carry out the network test using the scan tool.
- Is the scan tool able to communicate with all of the modules on the HS-CAN?
Yes
The fault is not currently present, GO to I3.
No
REFER to Information Bus to diagnose the module that is not communicating with the scan tool.
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I3 INSPECT THE HS-CAN CIRCUITRY
- Ignition OFF.
- Inspect all of the HS-CAN for a faulty or intermittent connection, including the pin crimps, connector fit, corroded/bent/pushed-out/damaged pins and splice integrity in the splices and connections (connectors) between the TCM and the IC.
- Does the HS-CAN circuitry pass the component inspection?
Yes
GO to I4.
No
REPAIR the HS-CAN circuitry as necessary. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.
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I4 CHECK FOR CORRECT TCM OPERATION
NOTE: When a new TCM is installed, the PATS keys do not need to be programmed into the IC.
- Disconnect all the TCM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the TCM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new TCM. REFER to Automatic Transmission/Transaxle &/or Transmission Control Systems. RESET the parameters in both the IC and the TCM. REFER to Passive Anti-Theft System (PATS) Parameter Reset Passive Anti-Theft System (PATS) Parameter Reset. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation. If the concern is still present, GO to I5.
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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I5 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 TCM. 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 Spare Key Programming - Using Diagnostic Equipment Using Diagnostic Equipment. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.
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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