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DTC P16F3 — LNP or LNQ

Diagnostic Instructions

    •  Preform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    •  Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P16F3 00: Control Module Redundant Memory Performance

Circuit/System Description

This diagnostic applies to internal microprocessor integrity conditions within the engine control module (ECM) and the throttle actuator control (TAC) system. This diagnostic also addresses if the ECM is not programmed.

The ECM monitors its ability to read and write to the memory. It also monitors a timing function. The ECM and the TAC processors are used to monitor the TAC system data. Both processors monitor the other processors data to verify that the indicated accelerator pedal position (APP) calculation is correct. The ECM performs an intrusive test in order to confirm that the APP signals are not shorted together. The ECM accomplishes this by pulling the APP sensor 2 low momentarily and looking for sensor 1 to also be pulled low.

Conditions for Running the DTC

    • The ignition is in the unlock, accessory, run, or crank position.
    • The system voltage is more than 5.23 V
    • DTCs P16F3 00 runs continuously when the above conditions are met.

Conditions for Setting the DTC

The ECM detects an internal malfunction or incomplete programming for more than 10 s.

Action Taken When the DTC Sets

DTC P16F3 00 is a Type C DTC

Conditions for Clearing the DTC

DTC P16F3 00 is a Type C DTC

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

  1. Test the K20 Engine Control Module voltage circuits at ECM connectors as listed below for a short to ground or an open/high resistance.
  2. • Terminal 1 X2
    • Terminal 3 X2
    • Terminal 5 X2
  3. Test the K20 Engine Control Module ground circuits at ECM connectors as listed below for an short to voltage or an open/high resistance.
  4. • Terminal 2 X2
    • Terminal 4 X2
    • Terminal 6 X2
  5. Observe the DTCs with the scan tool.
  6. If DTC P16F3 00 resets, replace the K20 Engine Control Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for control module replacement, programming and setup

   


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