Pinpoint Test G: DTC P1602, U0100 Or U2511

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

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

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

G1 CHECK THE BATTERY STATE OF CHARGE
- Ignition OFF.
- Check the battery state of charge with the battery condition test. Refer to BATTERY, MOUNTING AND CABLES .
- Does the battery pass the battery condition test?
- Yes: GO to G2 .
- No: REFER to CHARGING SYSTEM to diagnose the low battery voltage condition.
G2 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 unable to communicate with any of the modules on the HS-CAN?
- Yes: REFER to MODULE COMMUNICATIONS NETWORK to diagnose the module that is not communicating with the scan tool.
- No: GO to G3 .
G3 INSPECT THE HS-CAN CIRCUITRY
- Ignition OFF.
- Inspect all of the HS-CAN circuitry, including the pin crimps, connector fit, corroded/bent/pushed-out/damaged pins and splice integrity between the PCM and the IC .
- Does the HS-CAN circuitry pass the component inspection?
- Yes: GO to G4 .
- 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
- 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?
- Yes: INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS . 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 .
- 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
- 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?
- Yes: INSTALL a new IC . REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . 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 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. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.