Pinpoint Test G: DTC U0100 - Lost Communication With ECM/Pcm, DTC U2511 - Can - Data Mis-Match (Receive Data Does Not Match Expected)

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

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

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

G1 CHECK THE BATTERY STATE OF CHARGE (SOC)
- Key in OFF position.
- Check the battery state of charge (SOC) with the battery condition test. Refer to BATTERY, MOUNTING AND CABLES article.
- Does the battery pass the battery condition test?
1. YES : Go to G2.
2. NO : REFER to CHARGING SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article to diagnose the low battery voltage condition.
G2 CHECK FOR MODULE COMMUNICATION ON THE HS-CAN
- Connect the diagnostic tool.
- Key in ON position.
- Carry out the network test using the scan tool.
- Is the scan tool unable to communicate with any of the modules on the HS-CAN?
1. YES : REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the module that is not communicating with the scan tool.
2. NO : Go to G3.
G3 INSPECT THE HS-CAN CIRCUITRY
- Key in OFF position.
- Inspect all of the HS-CAN network, including the pin crimps, connector fit, corroded/bent/pushed-out/damaged pins and splice integrity in the 4 splices and 10 connections (5 connectors) between the IC and the PCM. This includes:
  - C175B (gas, PCM)
  - C1381B (diesel, PCM)
  - C237
  - S228
  - S269
  - C237
  - S146
  - S148
  - C219
  - C220A (IC)
- Does the HS-CAN network pass the component inspection?
1. YES : Go to G4.
2. NO : REPAIR the HS-CAN circuitry as necessary. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.
G4 CHECK FOR CORRECT PCM OPERATION
NOTE: When a new PCM is installed, the PATS keys do not need to be programmed into the IC.

NOTE: When a new PCM is installed, the parameters must be reset in the IC and the PCM.
- Disconnect all the PCM connectors.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect all the PCM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
1. YES : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS - GASOLINE ENGINES article or ELECTRONIC ENGINE CONTROLS - DIESEL ENGINE article. RESET the parameters in both the IC and the PCM. 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 G5.
2. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.
G5 CHECK FOR CORRECT IC OPERATION
NOTE: When a new IC is installed, the PATS keys must be programmed into the new IC.

NOTE: When a new IC is installed, the parameters must be reset in the IC and the PCM.
- Disconnect all the IC connectors.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect all the IC connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
1. YES : INSTALL a new IC. REFER to INSTRUMENT CLUSTER (IC) AND WARNING CHIMES article. RESET the parameters in both the IC and the PCM. REFER to Passive Anti-Theft System (PATS) Parameter Reset . PROGRAM the PATS keys into the new IC. REFER to Key Programming Using Diagnostic Equipment . CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.
2. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.