DTC P062D or P062E
Diagnostic Instructions
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 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
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, observe the DTC
information with a scan tool. DTCs P062D or P062E should not
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 injectors. Refer to
Diagnostic Aids. |
| 2. |
Verify a test lamp does not
illuminate between any of the fuel injector circuits and B+.
|
| ⇒ |
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. |
| 3. |
Test for less than 1 V on all
of the fuel injector circuits. |
| ⇒ |
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. |
| 4. |
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. |
|
Note: The DMM and
test leads must be calibrated to 0 Ω in order to prevent
misdiagnosis.
|
| 2. |
Test for 0.3-0.7 Ω
between the low control terminal 2 and the high control terminal
1. |
| ⇒ |
If not within the specified range, replace the
affected fuel injector. |
| 3. |
Test for infinite resistance
between each terminal of the fuel injector and ground. |
| ⇒ |
If not the specified value, replace the affected
fuel injector. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
