DTC P2147, P2148, P2150, or P2151 (LPL or LPV)
Diagnostic Instructions
DTC Descriptors
| DTC P2147 00: Injector High Control Circuit
Group 1 Low Voltage |
| DTC P2148 00: Injector High Control Circuit
Group 1 High Voltage |
| DTC P2150 00: Injector High Control Circuit
Group 2 Low Voltage |
| DTC P2151 00: Injector High Control Circuit
Group 2 High Voltage |
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
Fuel Injector Positive Voltage Control Group 1
|
P2147 00
|
P0201 00, P0204 00
|
P2148 00
|
-
|
Fuel Injector Positive Voltage Control Group 2
|
P2150 00
|
P0202 00, P0203 00
|
P2151 00
|
-
|
Fuel Injector 1 Control
|
-
|
P0201 00
|
-
|
-
|
Fuel Injector 2 Control
|
-
|
P0202 00
|
-
|
-
|
Fuel Injector 3 Control
|
-
|
P0203 00
|
-
|
-
|
Fuel Injector 4 Control
|
-
|
P0204 00
|
-
|
-
|
|
| |
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. The injectors are separated into the following two
groups:
| • |
Group 1 - Injectors 1 and
4 |
| • |
Group 2 - Injectors 2 and
3 |
When a fuel injector circuit condition is detected by the ECM,
the affected fuel injector will be disabled and may disable the
affected group of fuel injectors.
Conditions for Running the DTC
| • |
The ECM monitors for a
condition once per camshaft revolution. |
Conditions for Setting the DTC
The ECM detects that the commanded state of the driver and the
actual state of the control circuit do not match.
Action Taken When the DTC Sets
DTCs P2147, P2148, P2150 and P2151 are Type A DTCs.
Conditions for Clearing the DTC
DTCs P2147, P2148, P2150 and P2151 are Type A DTCs.
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 P0201, P0202, P0203 or P0204
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 are
captured in the Freeze Frame/Failure Records Data List.
|
Circuit/System Testing
| 1. |
Ignition OFF, disconnect the
harness connector at the affected fuel injector. |
| 2. |
Ignition ON, test for 5.8-7.8
V between the low control circuit terminal 1 and ground.
|
| ⇒ |
If less than the specified range, test the low
control circuit for an open/high resistance or for a short to
ground. If the circuit tests normal, replace the K20 Engine Control
Module. |
| ⇒ |
If greater than the specified range, test the low
control circuit for a short to voltage. If the circuit tests
normal, replace the K20 Engine Control Module. |
| 3. |
Ignition ON, connect a test
lamp between the affected fuel injector low control circuit
terminal 1 and ground. |
| 4. |
Engine cranking or running,
the test lamp should illuminate or flash. |
| ⇒ |
If the test lamp does not illuminate or flash,
replace the K20 Engine Control Module. |
| 5. |
If all circuits test normal,
test or replace the affected fuel injector. |
Component Testing
Static Test
| 1. |
Disconnect the harness
connector at the affected fuel injector. |
|
Note: The DMM and
test leads must be calibrated to 0 Ω in order to prevent
misdiagnosis.
|
| 2. |
Test for 0.5-1.5 Ω
between the low control terminal 2 and the high control terminal
1. |
| ⇒ |
If not within the specified range, replace the
fuel injector. |
| 3. |
Test for infinite resistance
between each terminal and ground. |
| ⇒ |
If not the specified value, replace the fuel
injector. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
