Pinpoint Test I: DTC U0100, U0101, U2511

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

I1 CHECK THE BATTERY STATE OF CHARGE
- Ignition OFF.
- Check the battery state of charge with the battery condition test. Refer to PINPOINT TEST A: BATTERY CONDITION TEST .
- Does the battery pass the battery condition test?
- Yes: GO to I2 .
- No: REFER to CHARGING SYSTEM to diagnose the low battery voltage condition.
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 PINPOINT TEST T: NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING to diagnose the module that is not communicating with the scan tool.
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.
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 REMOVAL . RESET the parameters in both the IC and the TCM . REFER to 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.
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 CLUSTER (IC) . RESET the parameters in both the IC and the TCM . REFER to PASSIVE ANTI-THEFT SYSTEM (PATS) PARAMETER RESET . PROGRAM the PATS keys into the new IC . REFER to SPARE KEY PROGRAMMING - 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.