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DTC P062D or P062E

DTC P062D or P062E

Diagnostic Instructions


• Perform 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 Descriptors

DTC P062D 00

Injector High Control Circuit Group 1 Malfunction

DTC P062E 00

Injector High Control Circuit Group 2 Malfunction

Circuit/System Description

The engine control module (ECM) supplies voltage to each fuel injector on the injector positive voltage control circuits. The ECM energizes each fuel injector by grounding the control circuit of that fuel injector. The ECM monitors the status of the injector positive voltage control circuits and the fuel injector control circuits.

When the ECM detects a fuel injector circuit malfunction, the fuel injectors in the affected group will be disabled.

Conditions for Running the DTC


• The engine is running.

• The ECM monitors for a condition once per camshaft revolution.


Conditions for Setting the DTC

The ECM detects an open, short to ground, or a short to voltage on the voltage supply circuit of the fuel injector.

Action Taken When the DTC Sets

DTCs P062D and P062E are Type A DTCs.

Conditions for Clearing the DTC

DTCs P062D and P062E are Type A DTCs.

Diagnostic Aids

The fuel injectors are separated into the following groups:


• Group 1 - DTC P062D with injectors 1 and 4

• Group 2 - DTC P062E with injectors 2 and 3


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 Verification


1. Ignition ON, check the diagnostic trouble code (DTC) information with a scan tool. DTC P062D or P062E must not be set.

2. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.


Circuit/System Testing


1. Ignition OFF, disconnect the harness connector at the appropriate fuel injector. Refer to Diagnostic Aids.

2. Verify a test lamp does not illuminate between any of the fuel injector circuits and B+.

3. If the test lamp illuminates, test the appropriate circuit for a short to ground. If the circuit tests normal, replace the K20 Engine Control Module.

4. Test for less than 1 V on all of the fuel injector circuits.

5. If greater than the specified range, test the circuit for a short to voltage. If the circuits test normal, replace the K20 Engine Control Module.

6. If all circuits test normal, test or replace the appropriate fuel injector.


Component Testing


Static Test

1. Disconnect the harness connector at the appropriate fuel injector.

2.
Note

The DMM and test leads must be calibrated to 0 Ω in order to prevent misdiagnosis.


Test for 0.3-0.7 Ω between the low control terminal 2 and the high control terminal 1.

3. If not within the specified range, replace the affected fuel injector.

4. Test for infinite resistance between each terminal of the fuel injector and ground.

5. If not the specified value, replace the affected fuel injector.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.


• Fuel Injector Replacement (LBY/A20DTR) Fuel Injector Replacement (LBS/A20DTH)

• Control Module References for ECM replacement, programming and setup