Pinpoint Test G: DTC P1602, U0100, 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.

G1 CHECK THE BATTERY STATE OF CHARGE
- Ignition OFF.
- Check the battery state of charge with the battery condition test. Refer to INSPECTION AND VERIFICATION .
- Does the battery pass the battery condition test?
- Yes: GO to G2 .
- No: INSTALL a new battery. REFER to REMOVAL AND INSTALLATION . TEST the system for normal operation.
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 PINPOINT TESTS 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 in the splices and connections (connectors) 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 POWERTRAIN CONTROL MODULE (PCM) or POWERTRAIN CONTROL MODULE (PCM) . 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 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 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.